논문 상세보기
pp.455-461
홍시를 살균처리하지 않은 것, 열처리 살균한 것, 염산처리 살균한 것과 염산처리 살균한 곶감 12%에 설탕 15% 용액을 17℃에서 36일간 발효시켰다. 무처리구와 염산처리구는 감에 부착되어 있던 유산균과 초산균으로 오염되어 산패되었다. 그래서 곶감의 산도는 4.4, 열처리한 것은 산도는 5.0, 산처리한 것은5.8, 무처리함 것은 13.5ml(0.1N NaOH/10ml sample)를 나타냈다. 에탄올 함량은 열처리구는 11.2%, 곶감은 10.0%, 산처리구는 9.4%무처리구는 6.1%였다. 가장 기호성과 안정성이 높은 것은 열처리하여 28일간 발효시킨 것이었다. 열처리구로 36일간 발효시킨 술은 총당 4.65%, 환원당 3.65%, 단백질, 0.03㎎/ml, 아미노산 0.17㎍/ml, pH 3.4, 펙틴 13.02㎍/ml, 균체수 5.75 logCFU/ml를 나타냈다. 곶감주도 기호성은 높았으나 발효속도가 낮았다.
The possibility of wine making from soft and dried persimmon and the effects of treatment for persimmon on the quality of wine have been investigated. Soft persimmon was pretreated by two methods, of heat and hydrochloric acid treatment. Fermentation mash was composed of 12% persimmon and 15% of sucrose, and was fermented at 17℃ for 36 days. The fermentation using persimmons which were untreated and treated by acid was not successful because of contamination caused by lactic acid and acetic acid bacteria. Acidity of the fermented broth produced from boiled, dried, acid treated and untreated persimmon was 4.4, 5.0, 5.8 and 13.5ml(0.1N NaOH/10ml broth), respectively. Ethanol concentration of the fermented broth produced from boiled, dried, acid treated and untreated persimmon was 11.2, 10.0, 9.4 and 6.1%v/v, respectively. The wine fermented for 28day`s fermentation using boiled persimmon as substrate had the best quality and stability. After 36 day`s fermentation using boiled persimmon, following composition was obtained: 4.65% of total sugar, 3.65% of reducing sugar, 0.03㎎/ml of protein, 0.17 ㎍/ml of amino acid and 13.02 ㎍/m1 of pectin. The pH and yeast cell of the boiled persimmon broth were 3.4 and 5.75 logCFU/ml. Fermented wine using dried persimmon had also good quality but the fermentation rate was slow.
