| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition excellent in stability of proanthocyanidin, beverage, a food, a cosmetic or a medicine containing the composition and to provide a method for stabilizing proanthocyanidin, used for preventing discoloration due to oxidative polymerization, or the like. SOLUTION: This composition comprises a proanthocyanidin and an amino acid having hydroxyl group. L-serine, L-threonine or glycyl-L-serine is exemplified as the amino acid. |
