Journal
JOURNAL OF FOOD SCIENCE
Volume 79, Issue 7, Pages C1285-C1291Publisher
WILEY
DOI: 10.1111/1750-3841.12516
Keywords
extracted soybean oil bodies; glycolipid; monosaccharide; neutral lipid; pH; phospholipid; phytosterol; protein; tocopherol; unsaturated fatty acid
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Funding
- Natural Science Foundation of China [31301496, 31201380]
- Fundamental Research Fund of Ministry of Education [2050205]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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In this study, the macronutrients and micronutrients of pH 6.8, 8.0, 9.5, and 11.0 extracted soybean oil bodies (OBs) were examined, revealing that soybean OBs might be used as a natural carrier for bioactive components (unsaturated fatty acids, phospholipid, tocopherol, and phytosterol). pH 6.8 extracted OBs (dry basis) contained 85.88% neutral lipid, 8.18% protein, and 5.85% polar lipid (mainly phospholipid) by gravimetric analysis. The percentage of neutral lipid was increased, while those of protein and polar lipid were decreased with increasing pH. Tocopherol (about 75 mg/ 100 g neutral lipid of OBs) was not affected, while phytosterol was decreased (136 to 110 mg/ 100 g neutral lipid of OBs) with increasing pH. The detectable total monosaccaride (galactosamine, glucosamine, and glucose) content of extracted OBs was low and also decreased (35.80 to 6.13 mg/ 100 g neutral lipid of OBs) with increasing pH. The protein of extracted OBs had higher percentage of essential amino acids than soybean protein isolate with tryptophan and methionine as limited amino acids. The fatty acid composition of extracted OBs was rich in linoleic acid (about 59%), oleic acid (about 20%), and a-linolenic acid (about 7%).
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