摘要
油脂是供能最高的一类营养物质,菜籽油在我国来源广泛,本文即以以1,3-定向脂肪酶为催化剂,使混合底物菜籽油和辛酸在无溶剂体系中进行酸解反应,以制备供能较低的结构脂质。研究结果表明,脂肪酶催化菜籽油和辛酸改性的最佳条件为:反应温度,70℃;底物比,2∶1(辛酸/菜籽油,摩尔比);酶量,12%(以底物质量计);反应时间,10h。热值测定结果表明改性后的菜籽油具有较低的产热性能。
Oil is the highest energy nutrients.Rapeseed oil spreads widely in China.The research take 1,3-directional lipase as catalyst,which catalyzes acidolysis reactions of rapeseed oil and caprylic acid in free solvent to produce structured lipid of lower energy.Results show that the optimum condition of lipase rapeseed oil and caprylic acid is:temperature,70℃;substrate ratio,2∶1(caprylic acid/rapeseed oil,mol/mol);lipase amount 12%;reaction time,10h.The research show that the calorific value of the structured li...
出处
《石河子大学学报（自然科学版）》
CAS
2007年第3期354-356,共3页
Journal of Shihezi University(Natural Science)
关键词
菜籽油
辛酸
脂肪酶
酸解
rapeseed oil
caprylic acid
lipase
acidolysis
