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Abstract ▼ AI-Helper

The study was attempted to investigate physicochemical and biological changes that would occur during preparation of Jeungpyun (rice cake prepared with rice wine). Furthermore, the effect of soy milk and suga. addition to Jeungpyun batters on textural changes of Jeungpyun during storage was studied ...

The study was attempted to investigate physicochemical and biological changes that would occur during preparation of Jeungpyun (rice cake prepared with rice wine). Furthermore, the effect of soy milk and suga. addition to Jeungpyun batters on textural changes of Jeungpyun during storage was studied in relation to physicochemical properties of Jeungpyun batters. 1. As fermentation continued, PH of Jeungpyun batters droped from 6.01 to 4.36. The addition of soy milk and 10% sugar to Jeungpyun batters resulted in significantly lower PH during fermentation. The volume of the batters with soy milk were significantly larger than those without soy milk. Jeungpyun batters with soy milk showed dramatic increase in viscosity after 2 hours of fermentation and the viscosity of other groups increased after 3 and half hours of fermentation. The reducing sugar contents of Jeungpyun batters containing 20% sugar increased rapidly during first fermentation and then decreased. The reducing sugar contents of Jeungpyun batters containing 10% sugar increased gradually during first fermentation and then rapidly increased after addition of 10％ sugar during 3rd fermentation. 2. Sensory evaluation results demonstrated that hardness of Jeungpyuns increased and tenderness, springiness, moistureness, overall acceptability decreased during storage of 4 days at 4$^{\circ}C$. QTS data showed that hardness, gumminess, chewiness of all the groups increased and adhesiveness decreased during storage. Both of sensory evaluation and QTS data demonstrated that addition of soy milk and separate addition of sugar at first and furing 3rd fermentation period induced slower changes in textural properties in Jeungpyuns during storage.

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