Literature DB >> 32626188

Modification of the existing maximum residue levels for spirotetramat in small fruits and berries.

Maria Anastassiadou, Alba Brancato, Luis Carrasco Cabrera, Luna Greco, Samira Jarrah, Aija Kazocina, Renata Leuschner, Jose Oriol Magrans, Ileana Miron, Stefanie Nave, Ragnor Pedersen, Hermine Reich, Alejandro Rojas, Angela Sacchi, Miguel Santos, Alois Stanek, Anne Theobald, Benedicte Vagenende, Alessia Verani.   

Abstract

In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant Landwirtschaftliches Technologiezentrum Augustenberg submitted a request to the competent national authority in Germany to modify the existing maximum residue levels (MRLs) for the active substance spirotetramat in crops belonging to the group of other small fruits and berries. The data submitted to support the MRL application were sufficient to derive MRL proposals for the crops concerned. Adequate analytical methods are available to enforce the proposed MRLs. Based on the risk assessment results, EFSA concluded that the short-term and long-term intake of residues resulting from the use of spirotetramat according to the reported agricultural practices is unlikely to present a risk to consumer health.
© 2019 European Food Safety Authority. EFSA Journal published by John Wiley and Sons Ltd on behalf of European Food Safety Authority.

Entities:  

Keywords:  MRL; consumer risk assessment; pesticide; small fruits and berries; spirotetramat

Year:  2019        PMID: 32626188      PMCID: PMC7008927          DOI: 10.2903/j.efsa.2019.5904

Source DB:  PubMed          Journal:  EFSA J        ISSN: 1831-4732


Summary

In accordance with Article 6 of Regulation (EC) No 396/2005, the applicant (Landwirtschaftliches Technologiezentrum Augustenberg) submitted an application to the competent national authority in Germany (evaluating Member State, EMS) to modify the existing maximum residue levels (MRLs) for spirotetramat for the crops group of other small fruits and berries. The EMS drafted an evaluation report in accordance with Article 8 of Regulation (EC) No 396/2005, which was submitted to the European Commission and forwarded to the European Food Safety Authority (EFSA) on 24 May 2019. To accommodate for the intended use of spirotetramat, the EMS proposed to raise the existing MRLs from 0.7 to 2 mg/kg. EFSA assessed the application and the evaluation report as required by Article 10 of the MRL regulation. Upon request of EFSA, the EMS submitted an updated evaluation report on 19 August 2019, in which more detailed information on the residue trials was reported. Based on the conclusions derived by EFSA in the framework of Commission Regulation (EU) No 188/2011, the data evaluated under previous MRL assessments and the additional data provided by the EMS in the framework of this application, the following conclusions are derived. The metabolism of spirotetramat following foliar application was sufficiently elucidated in crops belonging to the group of fruit crops (apples), leafy crops (lettuce), root crops (potatoes) and pulses/oilseeds (cotton). Studies investigating the effect of processing on the nature (hydrolysis studies) of spirotetramat and its ‐enol, ‐ketohydroxy, ‐monohydroxy and ‐enol‐glucoside metabolites demonstrated that spirotetramatenol and spirotetramat monohydroxy are stable under the standard hydrolysis conditions; parent spirotetramat and two additional metabolites (‐ketohydroxy and ‐enol‐glucoside metabolites) were found to degrade to a certain extent depending on the test conditions. Since the proposed use of spirotetramat is on permanent crops, investigation of residues in rotational crops is not necessary. Based on the metabolic pattern identified in plant, hydrolysis studies, the toxicological significance of spirotetramat metabolites and the stability of spirotetramat during storage, the residue definition for enforcement proposed during the European Union (EU) pesticides peer review was the ‘sum of spirotetramat and spirotetramatenol, expressed as spirotetramat’. For the risk assessment the residue definition was proposed as the ‘sum of spirotetramat, spirotetramatenol, spirotetramat‐ketohydroxy, spirotetramat‐monohydroxy and spirotetramatenol‐glucoside, expressed as spirotetramat’. These proposed residue definitions apply to all plant crop groups including processed commodities. The current enforcement residue definition in Regulation (EC) No 396/2005 is set as the ‘sum of spirotetramat, spirotetramatenol, spirotetramat‐ketohydroxy, spirotetramat‐monohydroxy and spirotetramatenol‐glucoside, expressed as spirotetramat’. Sufficiently validated analytical methods based on LC/HPLC‐MS/MS are available to quantify residues in the crops assessed in this application for both the current and the proposed enforcement residue definitions. The methods enable quantification of residues at or above 0.05 mg/kg (current residue definition) and at or above 0.02 mg/kg (proposed residue definition). The available residue trials in currants are sufficient to derive MRL proposals for both residue definitions (2 mg/kg for the current enforcement residue definition and 1.5 mg/kg for the proposed residue definition). These MRL proposals are extrapolated to all crops belonging to the crop group of other small berries and fruits. Specific studies investigating the magnitude of spirotetramat residues in processed commodities were not provided and are not required considering the low individual contribution of the processed products prepared from the crops under consideration to the overall dietary consumer exposure. Residues of spirotetramat in commodities of animal origin were not assessed since the crops under the current MRL application are not fed to livestock. The toxicological profile of spirotetramat was assessed in the framework of the EU pesticides peer review under Commission Regulation (EU) No 188/2011 and the data were sufficient to derive an acceptable daily intake (ADI) of 0.05 mg/kg body weight (bw) per day and an acute reference dose (ARfD) of 1 mg/kg bw. The toxicological reference values set for spirotetramat are also applicable to the metabolites included in the plant residue definition for risk assessment. The consumer risk assessment was performed with revision 3 of the EFSA Pesticide Residues Intake Model (PRIMo). EFSA concluded that the short‐term and long‐term intake of residues resulting from the use of spirotetramat in the group of other small fruits and berries according to the intended agricultural practices is unlikely to pose a risk to consumers’ health. It should be noted that the review of the existing MRL under art 12 of Regulation (EC) No 396/2005 is ongoing; therefore, the outcome of this reasoned opinion might need to be reconsidered when the MRL review is finalised. EFSA proposes to amend the existing MRL as reported in the summary table below. Full details of all endpoints and the consumer risk assessment can be found in Appendices B–D. Enforcement residue definition(existing): Spirotetramat and its four metabolites BYI08330‐enol, BYI08330‐ketohydroxy, BYI08330‐monohydroxy and BYI08330 enol‐glucoside, expressed as spirotetramat (Spi + 4) Enforcement residue definition(proposed): Sum of spirotetramat and spirotetramatenol, expressed as spirotetramat (Spi + enol) The submitted residue trials in currants are sufficient to derive MRL proposals for the existing and the proposed new enforcement residue definition. These MRL proposals can be extrapolated to all crops belonging to the group of small fruits and berries The proposed MRLs cover the intended NEU and indoor uses Risk for consumers unlikely Commodity code number according to Annex I of Regulation (EC) No 396/2005.

Assessment

The applicant requested the modification of the existing maximum residue levels (MRLs) for spirotetramat in the crops group of other berries and small fruits. The detailed description of the intended use of spirotetramat for these crops, which is the basis for the current MRL application, is reported in Appendix A. Spirotetramat is the ISO common name for ethyl cis‐8‐methoxy‐2‐oxo‐3‐(2,5‐xylyl)‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl carbonate (IUPAC). The chemical structures of the active substance and its main metabolites are reported in Appendix E. Spirotetramat was evaluated in the framework of Directive 91/414/EEC1 to be read in conjunction with Commission Regulation (EU) No 188/20112, with Austria designated as rapporteur Member State (RMS) for the representative uses following foliar application on citrus and lettuces. The draft assessment report (DAR) prepared by the RMS has been peer reviewed by EFSA (2013a). Spirotetramat was approved3 for the use as an insecticide on 1 May 2014. The EU MRLs for spirotetramat are established in Annex III of Regulation (EC) No 396/20054. The review of existing MRLs according to Article 12 of Regulation (EC) No 396/2005 (MRL review) is currently ongoing. EFSA has issued several reasoned opinions on the modification of MRLs for spirotetramat, including a reasoned opinion on other small fruits and berries (EFSA, 2019a). The proposals from these reasoned opinions have been considered in the EU MRL legislation.5 In accordance with Article 6 of Regulation (EC) No 396/2005, Landwirtschaftliches Technologiezentrum Augustenberg submitted an application to the competent national authority in Germany (evaluating Member State, EMS) to modify the existing MRLs for spirotetramat for the group of other small fruits and berries. The EMS drafted an evaluation report in accordance with Article 8 of Regulation (EC) No 396/2005, which was submitted to the European Commission and forwarded to the European Food Safety Authority (EFSA) on 24 May 2019. An updated ER, with more detailed information on the residue trials, was submitted to EFSA on 19 August 2019. To accommodate for the intended use of spirotetramat, the EMS proposed to raise the existing group MRL, which covers blueberries, cranberries, currants, gooseberries, rose hips, mulberries, azaroles, elderberries and other small fruits and berries, from 0.7 to 2 mg/kg. EFSA based its assessment on the evaluation report submitted by the EMS (Germany, 2019), the DAR and its addendum (Austria, 2008, 2013) prepared under Council Directive 91/414/EEC, the conclusion on the peer review of the pesticide risk assessment on spirotetramat (EFSA, 2013a), the Commission review report on spirotetramat (European Commission, 2013) as well as the conclusions from previous EFSA opinions on spirotetramat (EFSA, 2013b, 2014, 2016, 2017, 2019a). For this application, the data requirements established in Regulation (EU) No 544/20116 and the guidance documents applicable at the date of submission of the application to the EMS are applicable (European Commission, 1997a, b, c, d, e, f,–g, 2000, 2010a, 2010b, 2017; OECD, 2011, 2013). The assessment is performed in accordance with the legal provisions of the Uniform Principles for the Evaluation and the Authorisation of Plant Protection Products adopted by Commission Regulation (EU) No 546/20117. As the review of the existing MRLs under Article 12 of Regulation 396/2005 is not yet finalised, the conclusions reported in this reasoned opinion may need to be reconsidered in the light of the outcome of the MRL review. A selected list of end points of the studies assessed by EFSA in the framework of this MRL application including the end points of relevant studies assessed previously are presented in Appendix B. The evaluation report submitted by the EMS (Germany, 2019) and the exposure calculations using the EFSA Pesticide Residues Intake Model (PRIMo) are considered as supporting documents to this reasoned opinion and, thus, are made publicly available as background documents to this reasoned opinion.

Residues in plants

Nature of residues and methods of analysis in plants

Nature of residues in primary crops

In the framework of the EU pesticides peer review, metabolism of spirotetramat in primary crops was investigated in apples, lettuces, potatoes and cotton following foliar applications (EFSA, 2013a). A similar metabolic pathway was observed in all plant groups. The major part of the residues was composed of spirotetramat, its ‐enol, ‐ketohydroxy, ‐monohydroxy and ‐enol‐glucoside metabolites. It was noted that in the metabolism studies, the possible changes in the stereochemistry of the metabolites spirotetramat‐ketohydroxy and spirotetramat‐monohydroxy were not investigated and a data gap was identified by EFSA (EFSA, 2013a). When the EFSA guidance on the risk assessment for isomers (EFSA, 2019b) will be implemented, this point should be addressed. For the crops under assessment, which belong to the crop group of fruits, the metabolic behaviour is sufficiently addressed.

Nature of residues in rotational crops

Since the proposed use of spirotetramat is on permanent crops, the investigation of residues in rotational crops is not necessary.

Nature of residues in processed commodities

The effect of processing on the nature of spirotetramat and its four metabolites under standard hydrolytic conditions representing pasteurisation/boiling/baking/sterilisation was investigated in the framework of the EU pesticides peer review (EFSA, 2013a). Spirotetramat and spirotetramatenol‐glucoside remained stable under pasteurisation, degraded partially under cooking/boiling/baking and almost completely under sterilisation conditions into spirotetramatenol. Spirotetramat‐ketohydroxy was stable under pasteurisation and progressively converted to spirotetramat‐MA‐amide under cooking/boiling/baking and sterilisation conditions. Spirotetramatenol and spirotetramat‐monohydroxy remained stable under all three hydrolysis conditions (EFSA, 2019a).

Methods of analysis in plants

Sufficiently validated analytical methods are available to quantify residues of spirotetramat, spirotetramatenol, spirotetramat‐ketohydroxy, spirotetramat‐monohydroxy and spirotetramatenol‐glucoside by liquid chromatography with tandem mass spectrometry (HPLC/LC‐MS/MS) at the combined limit of quantification (LOQ) of 0.05 mg/kg. Similar analytical methods are available to enforce spirotetramat and spirotetramatenol at combined LOQ 0.02 mg/kg as proposed in the framework of the peer review (EFSA, 2019a). EFSA concludes that for the crops under assessment, which are considered matrices with high acid content, analytical methods are available to quantify residues for both the existing and the proposed enforcement residue definitions.

Storage stability of residues in plants

The stability of spirotetramat residues and its ‐enol, ‐ketohydroxy, ‐monohydroxy and ‐enol‐glucoside metabolites was demonstrated under frozen conditions at −18°C in high water, high starch, high oil commodities during the peer review (EFSA, 2013a). Under the previous MRL application, storage stability of residues was evaluated also in kiwi and dry beans (high acid, protein), and it was concluded the residues are stable under frozen condition (EFSA, 2019a). Overall the residues stability of spirotetramat‐ketohydroxy, ‐monohydroxy and ‐enol‐glucoside was demonstrated for 18 months in high water, high acid, high starch, high oil commodities when stored at −18°C. Spirotetramat showed to be unstable in several matrices with high water content (lettuces, beans with pods) and in certain commodities classified as matrix with high oil content (nut meal) and high starch content (potatoes). However, the sum of spirotetramat and spirotetramatenol was stable for at least 18 months in high water, high oil and high starch content matrices.

Proposed residue definitions

Based on the metabolic pattern identified in metabolism studies, hydrolysis studies, the toxicological significance of metabolites, and considering that spirotetramat was not stable under frozen storage conditions in several matrices and degraded to spirotetramatenol, the following residue definitions were proposed in the EU pesticides peer review (EFSA, 2013a): Residue definition for risk assessment: sum of spirotetramat, spirotetramatenol, spirotetramat‐ketohydroxy, spirotetramat‐monohydroxy and spirotetramatenol‐glucoside, expressed as spirotetramat Residue definition for enforcement: sum of spirotetramat and spirotetramatenol, expressed as spirotetramat These residue definitions are appropriate for primary crops, including the crops under consideration, and processed products. It is noted that the residue definition for enforcement currently set under Regulation (EC) No 396/2005 is identical to the residue definition for risk assessment, covering all four major spirotetramat metabolites.

Magnitude of residues in plants

Magnitude of residues in primary crops

In the support of the MRL application, the applicant submitted a total of 16 residue trials (eight performed in northern Europe (NEU) and eight under indoor conditions) conducted in black and red currants. All the samples were analysed for spirotetramat, its enol, ‐ketohydroxy, ‐monohydroxy and ‐enol‐glucoside. The results on the residue levels were reported for the individual components as well as sum, expressed as spirotetramat. Although for nine trials (five from NEU and four indoor) the interval between the applications deviates from the intended good agricultural practice (GAP) (7, 9, 10 and 15 days instead of 14), the deviation from the intended GAP was considered of having a minor impact on the final residue levels in the harvested products. All the submitted trials are supported by storage stability data and validated analytical methods. Overall, the trials were sufficiently representative for the NEU and indoor uses and allowed to calculate MRL proposals for the existing and the proposed new residue definition. In accordance with the EU guidance document on extrapolation (European Commission, 2017), the MRL proposals can be extrapolated to all crops classified under the crop group of ‘other small fruit and berries’.

Magnitude of residues in rotational crops

Since the proposed use of spirotetramat is on perennial crops, the investigations of residues in rotational crops are not necessary.

Magnitude of residues in processed commodities

Specific processing studies for the evaluated crops were not provided and are not required considering the low individual contribution of the processed products prepared from the crops under consideration to the overall dietary consumer exposure.

Proposed MRLs

The submitted residue trials on currants were sufficient to derive the MRL proposals for the crop group of other small fruits and berries for the existing and the proposed new enforcement residue definition. In Section 3, EFSA assessed whether residues on these crops are likely to pose a consumer health risk.

Residues in livestock

An assessment of residues in livestock is not necessary since the crops under consideration are not fed to livestock.

Consumer risk assessment

The consumer risk assessment was performed with revision 3 of the EFSA Pesticide Residues Intake Model (PRIMo). This exposure assessment model contains the relevant European food consumption data for different subgroups of the EU population (EFSA, 2018). The estimated exposure was compared with the acceptable daily intake (ADI) of 0.05 mg/kg body weight (bw) per day and an acute reference dose (ARfD) of 1 mg/kg bw derived for spirotetramat (European Commission, 2013). The toxicological reference values derived for spirotetramat apply also to the metabolites included in the residue definition for risk assessment (EFSA, 2013a). For the chronic exposure, EFSA used the supervised trial median residues (STMR) derived from the indoor residue trials on currants and the STMRs reported in the most recent EFSA reasoned opinion (EFSA, 2019a). For the remaining commodities of plant and animal origin, the existing MRL values were considered. The short‐term exposure was conducted only for crops belonging to the group of small fruits and berries assessed under current MRL application. The input values used in the dietary exposure calculation are summarised in Appendix D. No long‐term consumer intake concern was identified for any of the European diets incorporated in the EFSA PRIMo. The total chronic intake accounted for a maximum of 30% of the ADI (NL toddler diet); the contribution of the residues in the evaluated crops accounted for max. 0.4% of ADI (currants). The short‐term exposure did not exceed the acute reference value for any of the crops assessed (maximum 0.7% ARfD for currants). As regards the data gap identified during the peer review on the possible stereochemistry changes of the metabolites spirotetramat‐ketohydroxy and spirotetramat‐monohydroxy (EFSA, 2013a), EFSA reiterates the need to address this point when the EFSA guidance on isomers (EFSA, 2019b) will be implemented. For the intended uses assessed in this MRL application, EFSA concluded that according to the exposure calculation, there is a sufficient margin of safety to the toxicological reference values to cover the uncertainty related to this data gap. For further details on the exposure calculations, a screenshot of the Report sheet of the PRIMo is presented in Appendix C.

Conclusion and Recommendations

The data submitted in support of this MRL application were sufficient to derive the MRL proposals for the group of ‘other small fruits and berries’ for both existing and proposed new enforcement residue definition. EFSA concluded that the proposed use of spirotetramat on small fruits and berries will not result in a consumer exposure exceeding the toxicological reference values and therefore is unlikely to pose a risk to consumers’ health. The MRL recommendations are summarised in Appendix B.4.

Abbreviations

active substance acceptable daily intake applied radioactivity acute reference dose growth stages of mono‐ and dicotyledonous plants body weight conversion factor for enforcement to risk assessment residue definition days after last application draft assessment report days after treatment evaluating Member State residue expressed as a.s. equivalent Food and Agriculture Organization of the United Nations Good Agricultural Practice high performance liquid chromatography with tandem mass spectrometry highest residue international estimated daily intake international estimated short‐term intake independent laboratory validation International Organisation for Standardisation International Union of Pure and Applied Chemistry liquid chromatography limit of quantification maximum residue level Member States tandem mass spectrometry detector northern Europe Organisation for Economic Co‐operation and Development plant back interval processing factor preharvest interval (EFSA) Pesticide Residues Intake Model Quick, Easy, Cheap, Effective, Rugged, and Safe (analytical method) raw agricultural commodity residue definition rapporteur Member State Directorate‐General for Health and Consumers suspension concentrate supervised trials median residue yielding factor World Health Organization Number min–max g a.s./hL min–max Water L/ha min–max NEU: northern European Union; SEU: southern European Union; MS: Member State. Outdoor or field use (F), greenhouse application (G) or indoor application (I). CropLife International Technical Monograph no 2, 6th Edition. Revised May 2008. Catalogue of pesticide formulation types and international coding system. Growth stage range from first to last treatment (BBCH Monograph, Growth Stages of Plants, 1997, Blackwell, ISBN 3‐8263‐3152‐4), including, where relevant, information on season at time of application. PHI – minimum preharvest interval.

Appendix B – List of end points

Residues in plants

Nature of residues and methods of analysis in plants

Metabolism studies, methods of analysis and residue definitions in plants

Stability of residues in plants

spi‐ketohydroxy, spienol‐Glc spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy spi‐ketohydroxy, spienol‐Glc, spi‐monohydroxy Spi: spirotetramat; spienol: spirotetramatenol; spi + enol: spirotetramat plus spirotetramatenol; spi‐ketohydroxy: spirotetramat‐ketohydroxy; spi‐monohydroxy: spirotetramat‐monohydroxy; spienol‐Glc: spirotetramatenol glucoside.

Magnitude of residues in plants

Summary of residues data from the supervised residue trials

(EFSA, 2013a): 0.03, 0.04, 0.06; 0.08, 0.06, 0.12, 0.21, 0.39 RD RA: 0.081, 0.10, 0.11, 0.12, 0.16, 0.21, 0.27, 0.44 (EFSA, 2013a): 0.24, 0.25, 0.34, 0.48, 0.53, 0.56, 0.59, 0.91 RD RA: 0.27, 0.29; 0.37, 0.51, 0.60, 0.62, 0.71, 0.95 * Indicates that the MRL is proposed at the limit of quantification. The bold indicates the proposed MRLs and the input values used for in the consumer risk assessment. NEU: Outdoor trials conducted in northern Europe, SEU: Outdoor trials conducted in southern Europe, Indoor: indoor EU trials or Country code: if non‐EU trials. Highest residue (residue definition for RA). Supervised trials median residue (residue definition for RA). Conversion factor to recalculate residues according to the new proposed residue definition for monitoring to the residue definition for risk assessment.

Residues in rotational crops

The crops under consideration are perennial; therefore, the assessment on the succeeding crops is not relevant under this MRL application.

Processing factors

No processing studies were submitted in the framework of the present MRL application.

Residues in livestock

The crops under consideration are not fed to livestock; thus, an assessment of residues in livestock is not necessary.

Consumer risk assessment

Recommended MRLs

Enforcement residue definition(existing): Spirotetramat and its four metabolites BYI08330‐enol, BYI08330‐ketohydroxy, BYI08330‐monohydroxy and BYI08330 enol‐glucoside, expressed as spirotetramat (Spi + 4)(R) Enforcement residue definition(proposed): Sum of spirotetramat and spirotetramatenol, expressed as spirotetramat (Spi + enol) The submitted residue trials in currants are sufficient to derive MRL proposals for the existing and the proposed new enforcement residue definition. These MRL proposals can be extrapolated to all crops belonging to the group of small fruits and berries The proposed MRLs cover the intended NEU and indoor uses Risk for consumers unlikely Commodity code number according to Annex I of Regulation (EC) No 396/2005.

Appendix D – Input values for the exposure calculations

Livestock dietary burden calculations

Not applicable to the current assessment. Median residue (STMR) according to the residue definition for risk assessment in products of animal origin as the sum of spirotetramatenol and spirotetramatenol‐GA, expressed as spirotetramat (EFSA, 2013a). ethyl cis‐8‐methoxy‐2‐oxo‐3‐(2,5‐xylyl)‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl carbonate O=C(OCC)OC1=C(C(=O)N[C@@]21CC[C@H](CC2)OC)c1cc(C)ccc1C CLSVJBIHYWPGQY‐GGYDESQDSA‐N (5s,8s)‐3‐(2,5‐dimethylphenyl)‐4‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]dec‐3‐en‐2‐one Cc1cc(C=2C(=O)N[C@]3(CC[C@H](CC3)OC)C=2O)c(C)cc1 IDJJHEIUIYGFDX‐QGGXVJLZSA‐N (5s,8s)‐3‐(2,5‐dimethylphenyl)‐3‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]decane‐2,4‐dione Unstated stereochemistry Cc1cc(c(C)cc1)C1(O)C(=O)N[C@]2(CC[C@H](CC2)OC)C1=O XOVCVOLJZHNHLA‐GESSKKQQSA‐N (5s,8s)‐3‐(2,5‐dimethylphenyl)‐4‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]decan‐2‐one Unstated stereochemistry Cc1cc(C2C(=O)N[C@@]3(CC[C@@H](CC3)OC)C2O)c(C)cc1 HPQGJNTUXNUIDL‐RMVSHPHESA‐N (5s,8R)‐3‐(2,5‐dimethylphenyl)‐8‐methoxy‐2‐oxo‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl β‐D‐glucopyranoside Cc1cc(c(C)cc1)C1=C(O[C@@H]2O[C@H](CO)[C@H](O)[C@H](O)[C@H]2O)[C@]2(CC[C@H](OC)CC2)NC1=O UZUGTDHNHPYPHX‐UHFFFAOYSA‐N cis‐1‐[2‐(2,5‐dimethylphenyl)(hydroxy)acetamido]‐4‐methoxycyclohexanecarboxylic acid unstated stereochemistry CO[C@@H]1CC[C@](NC(=O)C(O)c2cc(C)ccc2C)(CC1)C(=O)O BQMSZJLYWPKQFG‐ZSGNYYCVSA‐N (5s,8S)‐3‐(2,5‐dimethylphenyl)‐8‐methoxy‐2‐oxo‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl D‐glucopyranosiduronic acid Cc1cc(c(C)cc1)C1=C(OC2O[C@@H]([C@@H](O)[C@H](O)[C@H]2O)C(=O)O)[C@]2(CC[C@H](OC)CC2)NC1=O BKIJPFZWNISEGV‐QEKYSDTLSA‐N The metabolite name in bold is the name used in the conclusion. ACD/Name 2015 ACD/Labs 2015 Release (File version N20E41, Build 75170, 19 Dec 2014). ACD/ChemSketch 2015 ACD/Labs 2015 Release (File version C10H41, Build 75059, 17 Dec 2014).
Codea CommodityExisting EU MRL (mg/kg)Proposed EU MRL (mg/kg)Comment/justification
(Spi + 4)Spi + 4Spi + enol

Enforcement residue definition(existing): Spirotetramat and its four metabolites BYI08330‐enol, BYI08330‐ketohydroxy, BYI08330‐monohydroxy and BYI08330 enol‐glucoside, expressed as spirotetramat (Spi + 4)

Enforcement residue definition(proposed): Sum of spirotetramat and spirotetramat‐enol, expressed as spirotetramat (Spi + enol)

0154010Blueberries0.721.5

The submitted residue trials in currants are sufficient to derive MRL proposals for the existing and the proposed new enforcement residue definition. These MRL proposals can be extrapolated to all crops belonging to the group of small fruits and berries

The proposed MRLs cover the intended NEU and indoor uses

Risk for consumers unlikely

0154020Cranberries0.721.5
0154030Currants0.721.5
0154040Gooseberries0.721.5
0154050Rose hips0.721.5
0154060Mulberries0.721.5
0154070Azaroles0.721.5
0154080Elderberries0.721.5
0154990Others small fruits and berries0.721.5

Commodity code number according to Annex I of Regulation (EC) No 396/2005.

Crop and/or situationNEU, SEU, MS or countryF G or Ia Pests or group of pests controlledPreparationApplicationApplication rate per treatmentPHI (days)d Remarks
Typeb Conc. a.s. (g/L)Method kindRange of growth stages & seasonc

Number

min–max

Interval between application (min)

g a.s./hL

min–max

Water L/ha

min–max

RateUnit
Blueberries, cranberries, currants, gooseberries, rose hips, mulberries, azaroles, elderberries, other small fruits and berriesNEUFMulberry scaleSC100.0Foliar treatment – broadcast sprayingBBCH 69–85214 days0.011–0.023500–1,000112.5g/ha14
Blueberries, cranberries, currants, gooseberries, rose hips, mulberries, azaroles, elderberries, other small fruits and berriesDEGAphidsSC100.0Foliar treatment – broadcast sprayingBBCH 69–85214 days0.011–0.023500–1,000112.5g/ha14

NEU: northern European Union; SEU: southern European Union; MS: Member State.

Outdoor or field use (F), greenhouse application (G) or indoor application (I).

CropLife International Technical Monograph no 2, 6th Edition. Revised May 2008. Catalogue of pesticide formulation types and international coding system.

Growth stage range from first to last treatment (BBCH Monograph, Growth Stages of Plants, 1997, Blackwell, ISBN 3‐8263‐3152‐4), including, where relevant, information on season at time of application.

PHI – minimum preharvest interval.

Primary crops (available studies)Crop groupsCropsApplicationsSamplingComment/source
Fruit cropsApplesFoliar: 2 × 576 g/ha, BBCH 69, 7163 DALA[azaspirodecenyl‐3‐14C]‐spirotetramat (EFSA, 2013a)
Root cropsPotatoesFoliar: 3 × 96 g/ha, BBCH 75, 85, 9314 DALA[azaspirodecenyl‐3‐14C]‐spirotetramat (EFSA, 2013a)
Leafy cropsLettucesFoliar: 2 × 72 g/ha, BBCH 41, 457 DALA[azaspirodecenyl‐3‐14C]‐spirotetramat (EFSA, 2013a)
Pulses/oilseedsCottonFoliar: 2 × (92+172) g/ha BBCH 15, 8519 DAT1, 39 DALA[azaspirodecenyl‐3‐14C]‐spirotetramat (EFSA, 2013a)
Plant products (available studies)CategoryCommodityT (°C)Stability periodCompounds coveredComment/source
ValueUnit
High water contentLettuces−186MonthsspiEFSA (2013a)
Beans with pods−181MonthsspiEFSA (2016)
Tomatoes−1818MonthsspiEFSA (2013a)
Lettuces−182Monthsspi‐enolEFSA (2016)
Beans with pods−181Monthsspi‐enolEFSA (2016)
Tomatoes−1818Monthsspi‐enolEFSA (2013a)
Lettuces, beans with pods, tomatoes−1818Monthsspi + enolEFSA (2013a)
Lettuces, beans with pods−1818Months

spi‐ketohydroxy, spi‐enol‐Glc

spi‐monohydroxy

EFSA (2013a)
High oil contentNut (meal)−181MonthsspiEFSA (2013a)
Nut (meal)−1818Monthsspi‐enolEFSA (2013a)
Nut (meal)−1818Monthsspi + enolEFSA (2013a)
Nut (meal)−1818Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2013a)
High protein contentBean (dry)−1818Monthsspi, spi‐enolEFSA (2019a)
Bean (dry)−1818Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2019a)
High starchPotatoes−182MonthsspiEFSA (2016)
Potatoes−1812Monthsspi‐enolEFSA (2013a)
Potatoes−1818Monthsspi + enolEFSA (2013a)
Potatoes−1818Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2013a)
High acid contentKiwi fruit−1818Monthsspi, spi‐enolEFSA (2019a)
Kiwi fruit−1818Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2019a)
Processed productsOrange juice, prune−185MonthsspiEFSA (2013a)
Orange juice, prune−185Monthsspi‐enolEFSA (2013a)
Orange juice, prune−185Monthsspi + enolEFSA (2013a)
Orange juice, prune−185Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2013a)
Tomato paste−1812MonthsspiEFSA (2013a)
Tomato paste−183Monthsspi‐enolEFSA (2013a)
Tomato paste−1812Monthsspi + enolEFSA (2013a)
Tomato paste−1812Months

spi‐ketohydroxy, spi‐enol‐Glc,

spi‐monohydroxy

EFSA (2013a)

Spi: spirotetramat; spi‐enol: spirotetramat‐enol; spi + enol: spirotetramat plus spirotetramat‐enol; spi‐ketohydroxy: spirotetramat‐ketohydroxy; spi‐monohydroxy: spirotetramat‐monohydroxy; spi‐enol‐Glc: spirotetramat‐enol glucoside.

CommodityRegion/indoora Residue levels observed in the supervised residue trials (mg/kg)Comments/SourceCalculated MRL (mg/kg)HRb (mg/kg)STMRc (mg/kg)CFd
CurrantsNEU existing RD Mo = RD RA: 0.081, 0.10, 0.11, 0.12, 0.16, 0.21, 0.27, 0.44Extrapolation to the group of other small fruits and berries classified under crop code 0154000 is possible0.7 mg/kg (existing RD Mo)RA: 0.44RA: 0.14

proposed RD Mo (EFSA, 2013a): 0.03, 0.04, 0.06; 0.08, 0.06, 0.12, 0.21, 0.39

RD RA: 0.081, 0.10, 0.11, 0.12, 0.16, 0.21, 0.27, 0.44

0.6 mg/kg (proposed RD Mo) 1.6
CurrantsIndoor existing RD Mo = RD Mo: 0.27, 0.29; 0.37, 0.51, 0.60, 0.62, 0.71, 0.95Extrapolation to the group of other small fruits and berries classified under crop code 0154000 is possible 2 mg/kg (existing RD Mo) RA: 0.95 RA: 0.56

proposed RD Mo (EFSA, 2013a): 0.24, 0.25, 0.34, 0.48, 0.53, 0.56, 0.59, 0.91

RD RA: 0.27, 0.29; 0.37, 0.51, 0.60, 0.62, 0.71, 0.95

1.5 mg/kg (proposed RD Mo) 1.6

* Indicates that the MRL is proposed at the limit of quantification. The bold indicates the proposed MRLs and the input values used for in the consumer risk assessment.

NEU: Outdoor trials conducted in northern Europe, SEU: Outdoor trials conducted in southern Europe, Indoor: indoor EU trials or Country code: if non‐EU trials.

Highest residue (residue definition for RA).

Supervised trials median residue (residue definition for RA).

Conversion factor to recalculate residues according to the new proposed residue definition for monitoring to the residue definition for risk assessment.

Codea CommodityExisting EU MRL (mg/kg)Proposed EU MRL (mg/kg)Comment/justification
(Spi + 4)Spi + 4Spi + enol

Enforcement residue definition(existing): Spirotetramat and its four metabolites BYI08330‐enol, BYI08330‐ketohydroxy, BYI08330‐monohydroxy and BYI08330 enol‐glucoside, expressed as spirotetramat (Spi + 4)(R)

Enforcement residue definition(proposed): Sum of spirotetramat and spirotetramat‐enol, expressed as spirotetramat (Spi + enol)

0154010Blueberries0.721.5

The submitted residue trials in currants are sufficient to derive MRL proposals for the existing and the proposed new enforcement residue definition. These MRL proposals can be extrapolated to all crops belonging to the group of small fruits and berries

The proposed MRLs cover the intended NEU and indoor uses

Risk for consumers unlikely

0154020Cranberries0.721.5
0154030Currants0.721.5
0154040Gooseberries0.721.5
0154050Rose hips0.721.5
0154060Mulberries0.721.5
0154070Azaroles0.721.5
0154080Elderberries0.721.5
0154990Others small fruits and berries0.721.5

Commodity code number according to Annex I of Regulation (EC) No 396/2005.

CommodityChronic risk assessmentAcute risk assessment
Input value (mg/kg)CommentInput value (mg/kg)Comment
Citrus fruits0.22STMR × CF × PF (EFSA, 2016)Acute risk assessment undertaken only with regard to the crops under consideration
Tree nuts0.084STMR (EFSA, 2016)
Pome fruits0.17STMR (EFSA, 2016)
Stone fruits1.60STMR (EFSA, 2016)
Table grapes0.41STMR (EFSA, 2016)
Wine grapes0.17STMR × CF × PF × YF (EFSA, 2016)
Strawberries0.08STMR (EFSA, 2016)
Other small fruits and berries0.56STMR0.95HR
Table olives0.72STMR (EFSA, 2016)
Kaki/Japanese persimmons0.14STMR (EFSA, 2016)
Kiwi fruits0.41STMR (EFSA, 2019a)
Litchis/lychees1.60STMR (EFSA, 2016)
Avocados0.22STMR (EFSA, 2016)
Bananas0.08STMR (EFSA, 2016)
Mangoes0.16STMR (EFSA, 2016)
Papayas0.17STMR (EFSA, 2016)
Granate apples/Pomegranates0.20STMR (EFSA, 2017)
Guavas0.55STMR (EFSA, 2017)
Pineapples0.07STMR (EFSA, 2016)
Potatoes0.12STMR (EFSA, 2016)
Other root & tuber vegetables, except sugar beets0.05STMR (EFSA, 2017)
Garlic0.10STMR (EFSA, 2019a)
Onions0.11STMR (EFSA, 2016)
Shallots0.10STMR (EFSA, 2016)
Solanaceae, except peeper0.44STMR (EFSA, 2016)
Peppers0.95STMR (EFSA, 2016)
Cucurbits0.057STMR (EFSA, 2016)
Sweet corns0.31STMR (EFSA, 2017)
Flowering Brassica0.50STMR (EFSA, 2016)
Brussels sprouts0.11STMR (EFSA, 2016)
Head cabbages0.23STMR (EFSA, 2016)
Leafy brassica3.70STMR (EFSA, 2016)
Kohlrabies0.35STMR (EFSA, 2016)
Lettuces & salad plants3.70STMR (EFSA, 2016)
Spinaches & similar leaves3.70STMR (EFSA, 2016)
Water cresses3.70STMR (EFSA, 2016)
Herbs & edible flowers1.23STMR (EFSA, 2016)
Legume vegetables0.505STMR (EFSA, 2016)
Celeries0.58STMR (EFSA, 2016)
Florence fennels0.68STMR (EFSA, 2019a)
Globe artichokes0.41STMR (EFSA, 2016)
Rhubarbs0.68STMR (EFSA, 2019a)
Pulses0.21STMR (EFSA, 2016)
Soya beans0.45STMR (EFSA, 2016)
Cotton seeds0.095STMR (EFSA, 2016)
Olives for oil productions0.72STMR (EFSA, 2016)
Hops5.20STMR (FAO, 2008)
Chicory roots0.05STMR (EFSA, 2017)
Musclea 0.007STMR (EFSA, 2016)
Fat tissuea 0.012STMR (EFSA, 2016)
Livera 0.166STMR (EFSA, 2016)
Kidneya 0.024STMR (EFSA, 2016)
Edible offala 0.166STMR (EFSA, 2016)
Poultry tissuesa 0.022STMR (EFSA, 2016)
Milksa 0.003STMR (EFSA, 2016)
Bird eggsa 0.022STMR (EFSA, 2016)

Median residue (STMR) according to the residue definition for risk assessment in products of animal origin as the sum of spirotetramat‐enol and spirotetramat‐enol‐GA, expressed as spirotetramat (EFSA, 2013a).

Code/trivial namea IUPAC name/SMILES notation/InChiKeyb Structural formulac
Spirotetramat (BYI 08330)

ethyl cis‐8‐methoxy‐2‐oxo‐3‐(2,5‐xylyl)‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl carbonate

O=C(OCC)OC1=C(C(=O)N[C@@]21CC[C@H](CC2)OC)c1cc(C)ccc1C

CLSVJBIHYWPGQY‐GGYDESQDSA‐N

Spirotetramat‐enol

(5s,8s)‐3‐(2,5‐dimethylphenyl)‐4‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]dec‐3‐en‐2‐one

Cc1cc(C=2C(=O)N[C@]3(CC[C@H](CC3)OC)C=2O)c(C)cc1

IDJJHEIUIYGFDX‐QGGXVJLZSA‐N

Spirotetramat‐ketohydroxy

(5s,8s)‐3‐(2,5‐dimethylphenyl)‐3‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]decane‐2,4‐dione

Unstated stereochemistry

Cc1cc(c(C)cc1)C1(O)C(=O)N[C@]2(CC[C@H](CC2)OC)C1=O

XOVCVOLJZHNHLA‐GESSKKQQSA‐N

Spirotetramat‐monohydroxy

(5s,8s)‐3‐(2,5‐dimethylphenyl)‐4‐hydroxy‐8‐methoxy‐1‐azaspiro[4.5]decan‐2‐one

Unstated stereochemistry

Cc1cc(C2C(=O)N[C@@]3(CC[C@@H](CC3)OC)C2O)c(C)cc1

HPQGJNTUXNUIDL‐RMVSHPHESA‐N

Spirotetramat‐enol‐glucoside (spirotetramat‐enol‐Glc)

(5s,8R)‐3‐(2,5‐dimethylphenyl)‐8‐methoxy‐2‐oxo‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl β‐D‐glucopyranoside

Cc1cc(c(C)cc1)C1=C(O[C@@H]2O[C@H](CO)[C@H](O)[C@H](O)[C@H]2O)[C@]2(CC[C@H](OC)CC2)NC1=O

UZUGTDHNHPYPHX‐UHFFFAOYSA‐N

Spirotetramat‐MA‐amide

cis‐1‐[2‐(2,5‐dimethylphenyl)(hydroxy)acetamido]‐4‐methoxycyclohexanecarboxylic acid

unstated stereochemistry

CO[C@@H]1CC[C@](NC(=O)C(O)c2cc(C)ccc2C)(CC1)C(=O)O

BQMSZJLYWPKQFG‐ZSGNYYCVSA‐N

Spirotetramat‐enol‐GA

(5s,8S)‐3‐(2,5‐dimethylphenyl)‐8‐methoxy‐2‐oxo‐1‐azaspiro[4.5]dec‐3‐en‐4‐yl D‐glucopyranosiduronic acid

Cc1cc(c(C)cc1)C1=C(OC2O[C@@H]([C@@H](O)[C@H](O)[C@H]2O)C(=O)O)[C@]2(CC[C@H](OC)CC2)NC1=O

BKIJPFZWNISEGV‐QEKYSDTLSA‐N

The metabolite name in bold is the name used in the conclusion.

ACD/Name 2015 ACD/Labs 2015 Release (File version N20E41, Build 75170, 19 Dec 2014).

ACD/ChemSketch 2015 ACD/Labs 2015 Release (File version C10H41, Build 75059, 17 Dec 2014).

  1 in total

1.  Modification of the existing maximum residue levels for spirotetramat in leeks, spring onions and honey.

Authors:  Maria Anastassiadou; Giulia Bellisai; Giovanni Bernasconi; Alba Brancato; Luis Carrasco Cabrera; Lucien Ferreira; Luna Greco; Samira Jarrah; Aija Kazocina; Renata Leuschner; Jose Oriol Magrans; Ileana Miron; Stefanie Nave; Ragnor Pedersen; Hermine Reich; Miguel Santos; Alessia Pia Scarlato; Anne Theobald; Benedicte Vagenende; Alessia Verani
Journal:  EFSA J       Date:  2021-03-30
  1 in total

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