Data on cellular lipids of Yarrowia lipolytica grown on fatty substrates.

Yarrowia lipolytica, which is model oleaginous yeast with high industrial interest, was cultivated on fatty substrates. Data concerning fatty acid composition of both substrate and yeast lipids and comparisons of the experimental data with model predictions presented in "Biomodification of fats and oils and scenarios of adding value on renewable fatty materials through microbial fermentations: Modelling and trials with Yarrowia lipolytica" (Vasiliadou et al., 2018) were provided. Furthermore, the total yeast lipids were fractionated into their main fractions, that is, phospholipids, glucolipids plus sphingolipids and neutral lipids, and the fatty acid composition of each lipid fraction was reported.

Specifications table

Value of the data

The data can be used in order to identify the fatty acid specificity of Yarrowia lipolytica.

The composition of lipids (i.e., mainly neutral) accumulated in Y. lipolytica can be pre-determined.

New biomodification processes of common fats can be designed.

Data

The data article includes Table 1 reporting fatty acid composition of lipid fractions of Yarrowia lipolytica growing on olive oil, linseed oil, palm oil, sunflower oil, cod liver oil, and beef tallow, and two Figures showing: (1) Experimental data and theoretical predictions of the fatty acid composition of extracellular and intracellular lipids of Y. lipolytica and (2) theoretical fatty acid profiles of the free fatty acid fraction released in the growth medium during growth of Y. lipolytica on the above mentioned fatty substrates.

Table 1

Fatty acid composition of lipids accumulated in Yarrowia lipolytica growing on various fats of plant or animal origin.

Culture on olive oil
t (h)	L/x %, w/w	Lipid fractions	% in total lipids	C16:0	C16:1	C18:0	C18:1	C18:2	Others
109	28.0	NL	94.0	7.3	5.6	1.2	70.0	15.1	0.7
		G + S	4.2	9.2	5.4	2.7	65.9	15.2	0.6
		P	1.9	11.7	7.7	0.7	44.0	35.7	0.4
335	13.0	NL	96.0	7.2	10.0	1.8	60.9	19.2	1.0
		G + S	2.7	14.6	10.9	1.2	52.5	18.9	1.9
		P	1.4	10.6	13.3	2.1	49.7	22.8	1.6

Culture conditions: pH 6.0 ± 0.5; T = 28 °C; agitation rate 280 rpm. Data represent means of two replicates.

Experimental design, material, and methods

The yeast Y. lipolytica ACA-DC 50109 was used in the current investigation. The strain was maintained on potato dextrose agar (PDA, Conda, Madrid, Spain) at 7 ± 1 °C and re-cultured twice a month.

The growth media contained (in g/L): MgSO4.7H2O (Fluka, Steinheim, Germany), 1.5; KH2PO4 (Fluka), 7.0; Na2PO4 (Fluka), 2.0; CaCl2.2H2O (Carlo Erba, Rodano, Italy), 0.1; ΖnSO4.7H2O (Merck, Darmstadt, Germany), 0.001; CuSO4.5H2O (BDH, Poole, England), 0.0001; Co(NO3)3.3H2O (Merck), 0.0001; MnSO4.5H2O (Fluka), 0.0001; (NH4)2SO4 (Fluka), 0.5; yeast extract (Sigma, Steinheim, Germany), 2.0. Various commercial fats of plant (i.e., olive, sunflower, palm, and linseed) and animal (i.e., cod liver and beef tallow) origin were used as carbon and energy sources at a concentration of 25 g/L.

Experiments were performed in 250-mL Erlenmeyer flasks. The flasks containing 50±1 mL of growth media were sterilized at 121 °C for 20 min and thereafter inoculated with 1 mL of a mid-exponential phase pre-culture containing 4×106 cells/mL. The cultures were incubated in a rotary shaker (ZHWY211C, Zhicheng, Shanghai, China) at 180 rpm and T = 28 ± 1 °C.

Determination of extracellular and intracellular lipids was performed as described in [2]. Intracellular lipids were fractionated as described in [3]. Fatty acid moieties of both extracellular and intracellular lipids and their fractions were converted into fatty acid methyl-esters (FAMEs) and analysed by using a Gas Chromatography (GC; Agilent 7890 A device, Agilent Technologies, Shanghai, China) as described in [4].

The predictions have been obtained using the mathematical model which is presented in [1].

Experiments were performed in duplicate. Data represent means of two replicates. (Fig. 1, Fig. 2)

Fig. 1

Experimental data and theoretical predictions of the fatty acid composition (%) of extracellular (a) and intracellular (b) lipids of Yarrowia lipolytica cultivated on: (i) Olive oil, (ii) linseed oil, (iii) palm oil, (iv) sunflower oil, (v) cod liver oil, and (vi) beef tallow. Culture conditions: As in Table 1.

Fig. 2

Theoretical fatty acid profiles of the free fatty acid fraction released in the growth medium (g/l) vs. time when Yarrowia lipolytica was cultivated on: (i) Olive oil, (ii) linseed oil, (iii) palm oil, (iv) sunflower oil, (v) cod liver oil, and (vi) beef tallow. Culture conditions: As in Table 1.

Subject area	Biotechnology, Chemistry
More specific subject area	Lipid Biotechnology
Type of data	Tables, figures
How data was acquired	The yeast Yarrowia lipolytica was cultivated on fatty substrates and the fatty acid composition of both the extracellular and intracellular lipids, as well as of their fractions was determined using an Agilent 7890 A device Gas Chromatography (Agilent Technologies, Shanghai, China).
Data format	Raw samples were collected during growth of Y. lipolytica and processed. Substrate and cellular lipids were purified and analysed.
Experimental factors	Different fatty materials were used as substrates for Y. lipolytica.
Experimental features	Various fats of plant (i.e., olive, sunflower, palm and linseed) and animal (i.e., cod liver and beef tallow) origin were used as carbon substrates for Y. lipolytica. Cultures, carried out in 250-mL Erlenmeyer flasks, were incubated in a rotary shaker (ZHWY211C, Zhicheng, Shanghai, China) at 180 rpm and T=28±1 °C.
Data source location	University of Patras, Greece
Data accessibility	The data are available in this article
Related research article	[1] Vasiliadou et al., 2018 “Biomodification of fats and oils and scenarios of adding value on renewable fatty materials through microbial fermentations: Modelling and trials with Yarrowia lipolytica.” Journal of Cleaner Production, 200, 1111–1129.