국내 겉보리 이용 엿기름의 효소역가 및 이화학적 특성
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서지정보
ㆍ발행기관 : 한국산업식품공학회
ㆍ수록지정보 : 산업식품공학 / 20권 / 1호
ㆍ저자명 : 이미자, 김양길, 서우덕, 최인덕, 김현영, 강현중, 김선림
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재료 및 방법
결과 및 고찰
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감사의 글
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영어 초록
Twenty four covered barley cultivars of Korea and subsequently produced malts were evaluated for quality characteristics, diastatic power (DP), and enzymatic actvity. Protein, amylase, starch and β-glucan content of covered barley cultivars were 8.2-12.8%, 4.2-19.1%, 47.9-59.7%, and 4.1-7.4%, respectively. The DP of malt during malting showed a maximum value in Day 4, when the bud length was 2.0-2.5 times longer than the length of the grain itself. α-Amylase activity was very low but increased significantly after Day 4, showing greatest activity on Day 6 (185.5-206.1 unit/g). β-Amylase activity increased as the malting progressed and a considerable amount was detected in barley grain on Day 6 (898.6-1591.6 unit/g). The potential diastatic power (PDP) of various cultivar grains ranged from 89.7 °L to 169.3 °L. The PDP of raw barley had strong correlation with β-amylase of raw barley (r=0.977, p<0.001) while the DP of malted barley was also correlated with the β-amylase activity of raw barley (r=0.654, p<0.001). Since the PDP of raw barley and the DP of malted barley are correlated (r=0.644, p<0.001), the PDP and β-amylase activity of raw barley are useful factors in predicting the DP of malted barley.
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