논문 상세보기
pp.544-549
자연 유래의 미생물 효소를 이용하여 제조되는 후발효차의 주요성분과 항산화능을 조사하였다. 후발효차의 총 플라보노이드와 총 페놀 함량에서 각각 ethanol 추출물(, 33.5 g/100g)이 가장 높았으나, 1년 저장한 시료에서는 ethyl acetate 추출물(, 39.5 g/100g)이 다른 모든 추출물보다 가장 높았다. 후발효차의 catechin류는 EGC, GC, catechin, catechol 및 EGCG가 검출되었으며, 열수 추출물에
Major components and antioxidant activity of fermented tea were investigated. Contents of total flavonoid and total phenol showed the highest score in ethanol extract ( and 33.5 g/100g), respectively. Their contents in hot water extract ( and 23.6 g/100g) were lower than those of the others extracts. However, their contents of ethyl acetate extract(, 39.5 g/100g) from fermented tea stored for 1 year had the highest amount among all tested samples. Catechins of fermented tea were found to be EGC, GC, catechin, catechol and EGCG. However, they were not detected in hot water extract. Scavenging activities of DPPH free radical of all extracts from fermented tea were increased in proportion to their concentration and were for fermented tea and for fermented tea stored for 1 year. Reducing power of ethanol extract at were 0.78 as OD value of 700 nm for fermented tea and 0.88 for fermented tea stored for 1 year, respectively. Antioxidant activities of ethyl acetate extracts at were for fermented tea and for fermented tea stored for 1 year, respectively.
