Tea decoctions prevent body weight gain in rats fed high-fat diet; black tea being more efficient than green tea

摘要

Abstract Background/Aims In contrast to the usual tea infusion, the anti-obesity effect of tea decoction (TD) is poorly documented. Here, we compared and contrasted the chronic effect of short-time decoction (15-min) of green versus black tea (GTD, BTD) prepared at a dose of 5% on lipid digestion and weight gain in rats fed high-fat diet (HFD) for 10 weeks. Methods The rats were assigned into three groups (n?=?10–12 each) and given ad libitum the HFD?+?water (CTRL) or {GTD} (GTGr) or {BTD} (BTGr). The food and fluid intake were measured daily and weight gains once/week. The fecal matters were collected twice/week for TPC, caffeine, total lipids and triglycerides (TG) analysis. In addition, the liver, perirenal and epididymal adipose tissues (AT) were removed and blood was collected for the same analysis and leptine level. Results 10-weeks {TD} consumption increased fecal {TG} excretion (+170 in {GTGr} and?+230% in BTGr; P?