In a research in mice, a staff of researchers on the University of California, Los Angeles, has discovered that black tea alters power metabolism within the liver by altering intestine metabolites. The study is revealed within the European Journal of Nutrition.
“We found that both black and green tea changed the ratio of intestinal bacteria in the animals,” stated lead writer Dr. Susanne Henning and colleagues.
“The percentage of bacteria associated with obesity decreased, while bacteria associated with lean body mass increased.”
Previous research indicated that chemical compounds in inexperienced tea referred to as polyphenols are absorbed and alter the power metabolism within the liver.
The new findings present that black tea polyphenols, that are too giant to be absorbed within the small gut, stimulate the expansion of intestine bacterium and the formation of short-chain fatty acids, a kind of bacterial metabolites that has been proven to change the power metabolism within the liver.
“It was known that green tea polyphenols are more effective and offer more health benefits than black tea polyphenols since green tea chemicals are absorbed into the blood and tissue,” Dr. Henning stated.
“Our new findings suggest that black tea, through a specific mechanism through the gut microbiome, may also contribute to good health and weight loss in humans.”
“The results suggest that both green and black teas are prebiotics, substances that induce the growth of good microorganisms that contribute to a person’s well-being,” she added.
In the research, 4 teams of mice acquired totally different diets — two of which have been supplemented with inexperienced tea or black tea extracts: (i) low-fat, high-sugar; (ii) high-fat, high-sugar; (iii) high-fat, high-sugar and inexperienced tea extract; and (iv) high-fat, high-sugar and black tea extract.
After 4 weeks, the weights of the mice that got inexperienced or black tea extracts dropped to the identical ranges as these of the mice that acquired the low-fat food plan all through the research.
The researchers additionally collected samples from the mice’s giant intestines (to measure micro organism content material) and liver tissues (to measure fats deposits).
In the mice that consumed both sort of tea extract, there was much less of the kind of micro organism related to weight problems and extra of the micro organism related to lean physique mass.
However, solely the mice that consumed black tea extract had a rise in a kind of micro organism referred to as Pseudobutyrivibrio, which might assist clarify the distinction between how black tea and inexperienced tea change power metabolism.
“The findings suggest that the health benefits of both green tea and black tea go beyond their antioxidant benefits, and that both teas have a strong impact on the gut microbiome,” stated senior writer Dr. Zhaoping Li.
“For black tea lovers, there may be a new reason to keep drinking it.”
Susanne M. Henning et al. Decaffeinated inexperienced and black tea polyphenols lower weight achieve and alter microbiome populations and performance in diet-induced overweight mice. European Journal of Nutrition, revealed on-line September 30, 2017; doi: 10.1007/s00394-017-1542-Eight