Physicochemical properties of soybean-based diacylglycerol before and after dry fractionation
文献类型： 外文期刊
作者： Luo, J. 1 ; Xu, Q. 2 ; Lin, S. 2 ; Luo, R. 3 ; Yang, B. 1 ; Wang, W. 4 ; Wang, Y. 2 ;
作者机构： 1.South China Univ Technol, Sch Biol & Biol Engn, Guangzhou 510006, Peoples R China
2.South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510640, Peoples R China
3.Guangdong Yue S Special Nutr Technol Co Ltd, Foshan 528000, Peoples R China
4.Guangdong Acad Agr Sci, Sericultural & Agri Food Res Inst, Guangzhou 510610, Peoples R China
关键词： soybean-based diacylg-lycerols; crystallisation properties; dry fractionation; solid fat content; polymorphism
期刊名称：INTERNATIONAL FOOD RESEARCH JOURNAL （ 影响因子：1.014； 五年影响因子：1.333 ）
ISSN： 1985-4668
年卷期： 2020 年 27 卷 3 期
页码：
收录情况： SCI
摘要： In the present work, the physicochemical properties of soybean-based DAG (SDAG), especially the effects of dry fractionation on crystallisation properties, were investigated. The solid portion (SF) and liquid portion (LF) were obtained by dry fractionation of SDAG. The physicochemical properties of soybean oil, SDAG, LF, and SF were investigated, including the determination of acylglycerol composition, fatty acid (FA) composition, slip melting point (SMP), iodine value (IV), solid fat content (SFC), X-ray diffraction (XRD), and differential calorimetry (DSC). The DAG content of SF (44.79 +/- 0.87%) was higher than SDAG (41.94 +/- 1.28%) and LF (42.22 +/- 0.29%). After fractionation, SF contained higher levels (p < 0.05) of saturated fatty acids (SAFA) and lower levels (p < 0.05) of unsaturated fatty acids (UFA) than LF and SDAG, which was in accordance with the differences in IV and SMP. The SFC of SF (0 degrees C, 17.25 +/- 0.65%; 20 degrees C, 10.66 +/- 0.28%; 40 degrees C, 3.47 +/- 0.14%) was significantly higher than those of LF and SDAG (p < 0.05). With respect to the crystal structures, it was demonstrated that SF contained more beta' crystals than SDAG and LF and could be better used in shortening. Overall, the present work provides a theoretical basis for the industrial applications of SDAG and its fractions. (c) All Rights Reserved
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