Quality Characteristics of the Germinated Brown Rice Wine Added with Red Pepper

고추를 첨가한 발아현미 술의 품질특성

This study is to develop wine with germinated brown rice and red pepper (Capsicum annuum) and to make effective use of the rice and red pepper. The results of alcohol fermentation were as follows. pH 5.5 was decreased to 4.5$\sim$5.1 during fermentation. The total acidity was changed from 0.56% in initial fermentation to 0.96$\sim$1.42% in after fermentation. Reducing sugar was changed from 0.27% in initial fermentation to 1.33$\sim$1.40% at the end of the fermentation. The ethanol content was 16.6$\sim$17.0% at the end of the fermentation. The addition of 10$\sim$50% red pepper did not have influence on the fermentation. From Hunter's L, a, and b values, a (redness) and b (yellowness) value were increased according to content of red pepper addition. The major volatiles were ethyl acetate, 1-propanol, 2-methyl-1-propanol, 3-methyl-butanol and benzeneethanol. Capsaicin content in the samples of red pepper addition was the highest in 50% and the lowest in 10%. In sensory evaluation, the wine with 20% red pepper had the highest acceptance scores in all of the properties examined than those of other samples.

본 연구는 발아현미와 고추를 이용하여 2단 담금으로 발효주를 제조한 후 pH, 총산, 환원당, 색도, 향기성분을 분석하고 관능검사를 실시하였다. pH는 발효 초기 5.5에서 발효가 진행되면서 감소하여 발효완료 된 8일째 4.5$\sim$5.1을 나타내었으며, 총산은 발효초기 0.56%에서 발효완료 후 0.96$\sim$1.42%를 나타내었다. 환원당은 발효초기 0.27%에서 발효완료 후 1.33$\sim$1.40%를 나타내었으며, 에탄올 함량은 발효완료 후 16.6$\sim$17.0%이었으며 고추 10$\sim$50%의 첨가는 알코올 발효에 크게 영향을 주지 않았다. L(명도)값은 고추 첨가량이 증가할수록 감소하였으며, a(적색도)값과 b(황색도)값은 고추 첨가량에 따라 증가하였다. 알코올발효 과정 중 검출된 주요한 향기성분은 ethyl acetate, 1-propanol, 2-methyl-1-propanol, 3-methyl-butanol, benzeneethanol이었다. 고추 첨가량에 따른 알코올발효 완료 후 capsaicin 함량은 고추첨가량의 증가에 따라 증가하였으며 고추 50% 첨가구가 가장 높은 0.72 mg%이고, 10% 첨가구가 가장 낮은 0.18 mg%이었으며, dihydrocapsaicin은 10$\sim$30% 첨가구에서는 검출되지 않았으며 40%, 50%에서 각각 0.02 mg%, 0.04 mg% 검출되었다. 전반적인 기호도는 고추 20% 첨가구가 가장 우수하였으며 50% 첨가구가 가장 낮은 선호도를 보였다.