Enzymatic Synthesis of L-Ascorbyl Fatty Acid Esters Under Ultrasonic Irradiation and Comparison of Their Antioxidant Activity and Stability

被引:8
作者
Jiang, Chen [1 ]
Lu, Yuyun [2 ]
Li, Zhuo [3 ]
Li, Cunzhi [1 ]
Yan, Rian [1 ]
机构
[1] Jinan Univ, Coll Sci & Engn, Dept Food Sci & Engn, 601 Huangpu Rd West, Guangzhou 510632, Guangdong, Peoples R China
[2] Natl Univ Singapore, Dept Chem, Fac Sci, Food Sci & Technol Programme, Sci Dr 2, Singapore 117546, Singapore
[3] China Resources Cestbon Food & Beverage Shenzhen, 22 Langshan Rd Technol Pk Nanshan Dist, Shenzhen 518057, Peoples R China
关键词
antioxidant activity; L-ascorbyl fatty acid esters; stability; synthesis; ultrasound irradiation; ACYL L-ASCORBATE; IMMOBILIZED LIPASE; POLYSACCHARIDE; EXTRACTS;
D O I
10.1111/1750-3841.13317
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
A series of novel l-ascorbyl fatty acid esters were synthesized by catalization of Novozym (R) 435 under ultrasonic irradiation and characterized by infrared spectroscopy, electrospray ionization mass spectra, and nuclear magnetic resonance. Their properties especially antioxidant activity and stability were investigated. The results showed that the reducing power, the scavenging activity of hydroxyl radical and 2,2-diphenyl-1-picrylhydrazyl radical were decreased with the increase of the number of carbon atoms in fatty acid. The hydroxyl radical scavenging activity and reducing power of l-ascorbyl saturated fatty acid esters were better than that of tert-butylhydroquinone. The induction period in lipid oxidation of l-ascorbyl saturated fatty acid esters and tert-butylhydroquinone were longer than that of l-ascorbyl unsaturated fatty acid esters and l-ascorbic acid both in soybean oil and lard. Besides, the l-ascorbyl fatty acid esters showed different stabilities in different conditions by comparing with l-ascorbic acid, and the l-ascorbyl saturated fatty acid esters were more stable than l-ascorbyl unsaturated fatty acid esters in ethanol solution.
引用
收藏
页码:C1370 / C1377
页数:8
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