| abstract |
The folic acid belonging to the vitamin B group has various beneficial effects, but is extremely unstable with respect to light and the like and is difficult to store for a long time. Therefore, the subject of the present invention is the stabilization of folic acid. A polyphenol in an amount sufficient to stabilize folic acid, specifically, 0.05 mol or more of polyphenol per mol of folic acid, preferably epigallocatechin gallate, epicatechin gallate, epigalo One or more catechins selected from catechin and epicatechin are allowed to coexist. [Selection] Figure 2 |