維普資訊
第26卷第1期
食品與生物技術學報
Vo1.26 N0.1
2007年1月
Journal of Food Science and Biotechnology
Jan. 2007
文章編號:1673-1689(2007)01-0100—06
非水相酶促酯交換法合成抗壞血酸脂肪酸酯
袁紅玲, 湯魯宏 ' 陶文沂
(江南大學工業生物技術教育部重點實驗室,江蘇無錫214036)
摘要:研究了一種L_抗壞血酸脂肪酸酯(AFAE)合成新途徑。實驗結果表明,氫化棕櫚油、大豆
油和海狗油等食用油脂作為脂肪酸基團供體,在固定化脂肪酶的催化下,在有機溶荊中與L一抗壞
血酸直接進行酯交換反應形成L一抗壞血酸脂肪酸酯。對反應介質體系的篩選發現,在叔戊醇中用
Novozym435催化此反應所得的產物濃度最高。對影響合成抗壞血酸脂肪酸酯的因素進行了探
討,確定了最適反應條件:初始油脂底物濃度為200 600 mmol/L,溫度為55℃,反應時間為9 h。
此條件下產物質量濃度可達43.51 g/L。
關鍵詞:抗壞血酸脂肪酸酯;酶法合成;脂肪酶;有機溶劑
中圖分類號:R 977.23 文獻標識碼:A
Enzymatic Synthesis of L-Ascorbyl Fatty Acid Esters via TransesterificatiOn
of Oil and L_Ascorbic Acid in Organic Media
YUAN Hong—ling, TANG Lu—hong, TA0 Wen—yi
(Key Laboratory of Industrial Biotechnology,Ministry of Education,Southern Yangtze University,Wuxi 21 4036,
China)
Abstract:A novel route for synthesis of L-ascorbyl fatty acid esters(AFAE)was investigated.
The experiment results show that edible oilsuch as hardened palm oil,soybean oil and Namibian
seal’S oilcan be used as the donor of fatty acid acyl group to synthesize the AFAE via
transesterificatjon with L—ascorbic acid in organic media catalyzed by immobilized lipase.Through
screening of reaction media and lipase,it was found that the highest product concentration could
be achieved by Novozym435 in tert-amyl alcoho1.The influence of substrate concentration,
reaction time etc.on the synthesis of L-ascorbic acid esters were also investigated and the
reaction conditions were optimized.For hardened palm oil,the optimum reaction conditions were
as follow:reaction time 9 hours under 55℃with the initial concentration of oil 200~600 mmol/
L.By combinational of optimal reaction conditions,the product concentration could be achieved
at 43.51 g/L.
Key words:ascorbyl fatty acid esters(AFAE);enzymaticsynthesis;lipase;organic solvents
L_抗壞血酸脂肪酸酯(L—Ascorbyl Fatty Acid Esters,AFAE,結構見圖1),包括 抗壞血酸月桂
收稿日期:2005-12-19.
作者筒介:袁紅玲(1980一),女,安徽阜陽人,微生物與生物制藥碩士研究生.
責任作者:湯魯宏(1960一),男,江蘇南京人,剮教授,工學博士,主要從事非水相酶促有機合成技術研究.
Email:lhtang@sytu.edu.Ell
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