PROBLEM TO BE SOLVED: To provide a method of stabilizing the quality of a beverage composition comprising collagen, and a beverage composition having inhibited browning caused by Maillard reaction.SOLUTION: This invention provides a method of stabilizing the quality of a beverage composition comprising collagen, the beverage composition comprising melibiose and edible acid. This invention also provides a beverage composition having inhibited browning caused by Maillard reaction, comprising collagen, melibiose and edible acid.