Enzymatic synthesis of vitexin glycosides and their activity.

ABSTRACT: Vitexin is an active component of many traditional chinese medicines, and is found in various plants. The low solubility of vitexin limits its pharmaceutical usage. In this study, solvent-stable β-fructosidase was used to glycosylate vitexin in organic solvents. The β-fructosidase showed high activity and stability in 30-80% (v/v) ethyl acetate with 90-99% yields of vitexin glycosides. Highly efficient synthesis of β-d-fructofuranosyl-(2→6)-vitexin (1.04 g L^-1) and β-d-difructofuranosyl-(2→6)-vitexin (0.45 g L^-1) was attained in 50% (v/v) ethyl acetate solvent system from 1.5 g L^-1 vitexin. Two novel vitexin glycosides showed higher anti-tumor activities compared to that of vitexin by employing a human breast cancer cytotoxicity assay.

SUBMITTER: Xu T 

PROVIDER: S-EPMC9396635 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature