文献类型：期刊文献

英文题名：Enzymatic synthesis and antioxidant properties of L-ascorbyl oleate and L-ascorbyl linoleate

作者：Song, Qing-Xun[1]; Wei, Dong-Zhi[1]; Zhou, Wen-Yu[1]; Xu, Wei-Qin[1]; Yang, Sheng-Li[2]

机构：[1]E China Univ Sci & Technol, Inst Biochem, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Res Ctr Biotechnol, Shanghai, Peoples R China

年份：2004

卷号：26

期号：23

起止页码：1777

外文期刊名：BIOTECHNOLOGY LETTERS

收录：;EI(收录号：2005078833527);WOS:【SCI-EXPANDED(收录号:WOS:000227474600003)】；

语种：英文

外文关键词：antioxidant; L-ascorbyl linoleate; L-ascorbyl oleate; immobilized lipase; reactive oxygen species

摘要：(L)-Ascorbyl oleate and (L)-ascorbyl linoleate were synthesized by an immobilized lipase from Candida antarctica with yields of 38% and 44%, respectively. (L)-Ascorbyl oleate was stable in sterile culture medium over 12 h at 37 degreesC but (L)-ascorbyl linoleate degraded by 17%. Ascorbyl oleate had a better protective effect on human umbilical cord vein endothelial cells treated with H2O2 than Of (L)-ascorbic acid-2-phosphate-6-palmitate (Asc2P6P).