摘要:
PROBLEM TO BE SOLVED A burdock fruit extract containing arctigenin at high content and its production method are provided, and both of which are used for treatment of pancreatic cancer. SOLUTION The burdock fruit extract containing arctigenin at high content by enzymatically converted arctiin into arctigenin with beta-glucosidase, which is an enzyme occurring endogenously in a burdock fruit, and adding ethanol, extracting, concentrating and then freeze-drying or spray drying.
摘要:
PROBLEM TO BE SOLVED The present invention is intended to provide a burdock fruit extract containing arctigenin and arctiin at a definite ratio and a method for producing the same. More particularly, the present invention is intended to provide a method for producing a burdock fruit extract containing arctigenin and arctiin at a weight ratio of approximately 1:1. SOLUTION A method for producing a burdock fruit extract containing arctigenin and arctiin at a weight ratio of arctigenin/arctiin = 0.7 to 1.3 is provided, including the steps of: cutting a burdock fruit and converting arctiin which is inherent in the burdock fruit into arctigenin by enzymatic conversion by beta-glucosidase which is inherent in the burdock fruit, wherein the enzymatic conversion includes reaction at a temperature from 20°C to 50°C. Also provided is the method further including a step of extracting an extract containing arctigenin and arctiin by adding an organic solvent and heating to reflux.