title: Macronutrients and micronutrients of soybean oil bodies extracted at different pH.
abstract: 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 α-linolenic acid (about 7%).
  
  
  CONCLUSIONS
  Oil bodies (OBs) from soybean and other plant seeds are greatly examined owing to their potential utilizations in food ingredients. The determination of its macronutrients and micronutrients would be very meaningful for its efficient utilization in the future.
authors.affiliation: State Key Laboratory of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, School of Food Science and Technology, Jiangnan Univ, 1800 Lihu Avenue, Wuxi, Jiangsu Province 214122, PR, China.
authors.forename: Yeming
authors.initials: Y
authors.lastname: Chen
authors.forename: Yanyun
authors.initials: Y
authors.lastname: Cao
authors.forename: Luping
authors.initials: L
authors.lastname: Zhao
authors.forename: Xiangzhen
authors.initials: X
authors.lastname: Kong
authors.forename: Yufei
authors.initials: Y
authors.lastname: Hua
mesh_terms: D005227:Fatty Acids / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D066292:Lipid Droplets / Q000737:chemistry*; D008055:Lipids / Q000737:chemistry*; D018977:Micronutrients / Q000032:analysis*; D009753:Nutritive Value; D010743:Phospholipids; D012639:Seeds / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry*; D030262:Soybean Proteins / Q000032:analysis*
chemical_list: D005227:Fatty Acids; D008055:Lipids; D018977:Micronutrients; D010743:Phospholipids; D030262:Soybean Proteins; D013024:Soybean Oil
keywords: extracted soybean oil bodies; glycolipid; monosaccharide; neutral lipid; pH; phospholipid; phytosterol; protein; tocopherol; unsaturated fatty acid