Abstract
Leaves of Ilex paraguariensis are used to prepare a tea known as maté which is a common beverage in several South American countries. The ethanol extract was fractionated to identify the compounds responsible for the anti-adipogenic activity in 3T3-L1 cells. Extracts of both fresh and dried maté leaves were subjected to column chromatography using molecular permeation to obtain the saponin (20% yields) and the polyphenol extracts (40% yields) from the fresh and dried leaves. The phenolic content was determined using high-performance liquid chromatography analysis and the Folin-Ciocalteau method. Also, maté extracts (50μg/ml to 1,000μg/ml) did not display citotoxicity using MTT. The polyphenol extract from the dried leaves was the most effective (50μg/ml) in the inhibition of triglyceride accumulation in 3T3-L1 adipocytes, and rutin (100μg/ml) likely accounted for a large portion of this activity. Additionally, maté extracts had a modulatory effect on the expression of genes related to the adipogenesis as PPARγ2, leptin, TNF-α and C/EBPα.
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