Effects of rice wine on the quality and flavor characteristics of yogurt

Abstract

Rice wine, a traditional Chinese fermented beverage, possesses both nutritional value and unique flavor. It is anticipated to enhance the nutritional potential and flavor of yogurt. This study aimed to assess the physicochemical, antioxidant, and sensory qualities of yogurt supplemented with varying concentrations of rice wine (0%, 5%, and 20%, v/v). The results revealed alterations in acidity, water-holding capacity (WHC), total sugar, texture characteristics, and rheological properties upon the addition of rice wine. Compared to the control group, yogurt supplemented with 5% and 20% rice wine showed higher total phenol content (TPC) and increased DPPH• clearance activity. Moreover, changes were observed in the hardness, adhesiveness, and gumminess of the experimental group. The addition of 5% YSRW resulted in an increased G′ and decreased G″ compared to the control group, which indicated that rice wine could increase the gel strength of yogurt. The variety and content of flavor substances in YSRW also increased, implying that rice wine might improve the sensory acceptance of yogurt. These findings suggested that rice wine can serve as a natural additive to enhance the flavor and taste of yogurt, which made it a promising ingredient for developing functional yogurt with desirable physiological, nutritional, antioxidant, and sensory qualities.