| 摘要 |
Disclosed is a method for preparing a CLA-enriched structured lipid by a transesterification of medium chain triglyceride (MCT) with ester or free fatty acid form of CLA using lipases, and use of the same. It has been known that CLA mainly exists in an acid form, and has various beneficial biological activities, but rapid oxidation property during storage. And also, animal fat or plant oil, widely ingested by animals or humans, is naturally produced as an acylglycerol form containing various fatty acids. The CLA-containing structured lipid is manufactured by mixing free or ester form of CLA with acylglyceride at a molar ratio of 1:1~1:5, adding immobilized lipase of 2.2~20% by weight of CLA and acylglyceride to the mixture with a solvent, and incubating at 35~75° C. for 1-36 hours. The CLA-containing structured lipid is a natural TG form and contains a high content of CLA, characterized by at least 15% content of CLA in total fatty acid composition, and at least 5% of CLA at sn-2 position. Accordingly, with the CLA-enriched MCT being administrated, it can efficiently provide biological activities of CLA, such as inhibition of carcinogenesis and reduction of fat accumulation in a body, as well as rapidly supply calories, an innate nutritional property of MCT.
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