申请人:Ochiai Misa
公开号:US20100256345A1
公开(公告)日:2010-10-07
The present invention provides a method for preparing a glycoside of a flavonoid compound, which comprises the step of treating flavonoid and a glycosyl donor with an enzymatic agent having glycosylation activity and being derived from the genus
Trichoderma
(preferably
Trichoderma viride
or
Trichoderma reesei
). Such a flavonoid compound includes a catechin compound or a methylated derivative thereof, and the glycosyl donor includes a carbohydrate containing a maltotriose residue (preferably maltotriose, maltotetraose, maltopentaose, maltohexaose, maltoheptaose, dextrin, γ-cyclodextrin or soluble starch). Glycosides obtained by the present invention have higher water solubility, improved taste, and increased stability. The present invention also provides novel glycosides of catechin compounds, which are obtained by the method of the present invention.
本发明提供了一种制备黄酮类化合物的糖苷的方法,其中包括用具有糖基化活性并来自Trichoderma属(优选为Trichoderma viride或Trichoderma reesei)的酶制剂处理黄酮类化合物和糖基供体。这样的黄酮类化合物包括儿茶素化合物或其甲基化衍生物,糖基供体包括含有麦芽三糖残基的碳水化合物(优选为麦芽三糖、麦芽四糖、麦芽五糖、麦芽六糖、麦芽七糖、糊精或可溶性淀粉)。通过本发明获得的糖苷具有更高的水溶性、改善的口感和增加的稳定性。本发明还提供了通过本发明的方法获得的儿茶素化合物的新型糖苷。