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Developments in Preparation of Lipid-Soluble Catechins Compounds

ZHU Jin-xuan1,2,JIN Qin-zhe1,ZHANG Shi-kang2,ZHU Yue-jin2(1.School of Food Science and Techology,Jiangnan University,Wuxi 214122,China;2.Hangzhou Tea Research Institute, CHINA COOP,Hangzhou 310016,China)  
Catechin compounds is one kind of polyphenol antioxidant that possess a great physiological activties.In this paper,progress of lipid-soluble catechins' preparation that use molecules modification were reviewed.Chemical method is mainly using carbonyl chlorides and catechin compounds in reaction under the role of chemical catalyst to prepare lipid-soluble catechins.But acylation reaction happened at different locus.The carbon chain length of acyl donors generally is more than 8.Enzymatic modification is mainly using fatty acid or fatty acid ester with catechins under the role of lipase,then direct esterification or ester exchange happened to get lipid-soluble catechins.Alkyl is bonded in catchin compounds,thus solubility in oil system of the catechin compounds is raising,and expand the application fields.
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