• Current Research on Agriculture and Life Sciences
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• 제31권4호
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• pp.240-244
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• 2013

To evaluate utilization of persimmon peels as novel bio-materials, the general composition and antioxidant activities of Daebong persimmon vinegar (DPV), Daebong persimmon peel vinegar (DPPV) and commercial persimmon vinegar (CPV) were investigated. The pH of DPPV had slightly higher than that of other vinegars. The titratable acidities of vinegars were 3.24% (DPV), 2.77% (DPPV) and 7.78% (CPV), respectively. The reducing sugar contents showed that DPV had slightly higher than that of other vinegars. The browning degree of DPV was lower than CPV in contrast to the turbidity. The results of Hunter's color value have showed that overall values of CPV had significantly higher than DPPV and DPV. The total phenolic contents of DPV and CPV were 19.49 and 17.13 mg/100g GAE, respectively. The total flavonoid contents of DPPV (8.04 mg/100g CE) were two fold higher than that of DPV (3.85 mg/100g CE). The antioxidant activities, by DPPH and FRAP assays, of DPV showed stronger than those of other vinegars. Free sugars were mainly composed of fructose and glucose. Organic acids were presented in the order acetic acid, succinic acid, malic acid, tartaric acid, citric acid and oxalic acid. These results suggest that the Daebong persimmon peels could be utilized for vinegar production as a health-benefit material.

• 한국식품과학회지
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• 제35권4호
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• pp.642-647
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• 2003

곶감가공 부산물인 감껍질을 효율적으로 이용하기 위하여 2단계로 알콜 및 초산 발효에 의해 감식초를 제조하였다. 감껍질을 이용한 알콜발효에서 알콜함량은 가수량이 12.43 mL/g 일 때, 초기 당함량 $12.41^{\circ}Brix$ 및 발효시간이 48.05 hr의 발효조건에서 최대치(8.22%)를 나타내었다. 산함량은 가수량이 12.18 mL/g 초기 당함량 $13.72^{\circ}Brix$ 및 발효시간이 46.22의 발효시간에서 최소치(0.30%)를 나타내었다. 초산발효에서 총산의 함량은 초기산도가 2.02%, 교반속도가 67.98 rpm 및 발효시간이 6.94 day일 때 최대치(6.40%)를 나타내었고, 갈색도는 초기산도가 1.50%, 교반속도가 150.00 rpm및 발효시간이 6.00 day일 때 가장 낮은 흡광도를 나타내었다. 감껍질을 이용하여 감식초를 제조하기 위해서 1차 알콜 발효조건은 가수량 12 mL/g, 초기 당함량 $12^{\circ}Brix$ 및 발효시간 48 hr로 할 때 감 알콜발효액을 제조할 수 있으며, 2차 초산발효조건은 초기산도 1.8%, 교반속도 70 rpm 및 발효시간 6 day인 것으로 나타났다.