| Literature DB >> 23993496 |
Chan Wang1, Xiao-Wei He, Qiang Huang, Fa-Xing Luo, Xiong Fu.
Abstract
The reactivity of octenyl succinic anhydride (OSA) with starch by phase transition catalyst (PTC) was investigated. The effects of two types (quaternary ammonium salt and non-ionic surfactant) and concentrations of PTC on the degree of substitution (DS) and reaction efficiency (RE) of OS-starch were examined. In aqueous medium, the use of a PTC, polyoxyethylene lauryl ether (AEO) produced derivatives with higher DS than others. The DS of OS-starch reached 0.0195 with 0.1% AEO, significantly higher than that (0.0182) without the use of PTC. As the concentration of AEO increased, the DS of OS-starch did not increase. The structural of AEO was investigated by nuclear magnetic resonance (NMR) spectroscopy. Conductivity measurement and Fourier transform infrared (FT-IR) spectroscopy confirmed that AEO could form complexes with Na(+). The complex of AEO and Na(+) could combine with starch-O(-), it should be possible to improve the transport of anion starch-O(-) to the hydrophobic reagents.Entities:
Keywords: (1)H NMR; (1)H nuclear magnetic resonance; AEO; BTMAB; CTAB; DS; EO; FT-IR; Fourier transform infrared spectroscopy; OSA; Octenyl succinic anhydride; PTC; Phase transition catalyst; RE; Starch; TBAB; benzyltrimethyl ammonium bromide; cetyltrimethyl ammonium bromide; degree of substitution; ethylene oxide; octenyl succinic anhydride; phase transition catalyst; polyoxyethylene lauryl ether; reaction efficiency; tetrabutylammonium bromide
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Year: 2013 PMID： 23993496 DOI： 10.1016/j.foodchem.2013.06.029
Source DB: PubMed Journal: Food Chem ISSN： 0308-8146 Impact factor: 7.514