領(lǐng)學(xué)術(shù)科研之先，創(chuàng)食品科技之新
—— 中國食品雜志社
Black tea is a healthy and popular?tea beverage. However, its main?bioactive compounds?(theaflavins and thearubigins) are not easily absorbed. The aim of this study was to investigate the modulation of?intestinal microbiota?by the nonabsorptive components of Keemun black tea (KBT) and Dianhong black tea (DBT), and?fructooligosaccharide?(FOS) was selected for use in the control group. KBT, DBT, and FOS significantly increased total short-chain acid production. Specifically, FOS treatment predominantly increased the production of?acetic acids?and black tea treatments increased the production of acetic, propionic, and?butyric acids?at similar rates. Moreover, FOS exerted a strong bifidogenic effect after 24 h of fermentation; KBT and DBT increased the abundance of the beneficial genus?Bacteroides?and?Roseburia. In summary, the nonabsorptive components of KBT and DBT could serve as novel?prebiotics, the underlying mechanisms of which are quite different from those of FOS.
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