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Thi Kim Le Loan,Nguyen Minh Thuy,Quang Le Tri,박성훈 한국식품과학회 2021 Food Science and Biotechnology Vol.30 No.4
A combination of freeze-dried powder of disproportionatingenzyme (D-enzyme)-containing potatotuber and b-amylase-containing ramie leaf was used toimprove the gluten-free (GF) bread, and its physicochemicalproperties were characterized. The presence of D-enzymeand b amylase in the potato tuber and ramie leaf wasconfirmed. Sixty five percent of partially gelatinized riceflour and 20% corn starch was combined with 10% freezedriedpotato tuber and 1% ramie leaf powder, and baked. The specific volume increased by 23% compared to thecontrol with improved internal characteristics. Textureprofile analysis revealed that retrogradation of the breadwas retarded when stored for 90 h at 4 C. The breadcrumb amylose content was reduced from 14 to 9% andamylopectin branch chain-length distribution was rearranged,whereby the proportions of the branch chains withDegree of polymerization (DP)\9 and DP[19decreased. The results suggest that D-enzyme and bamylasecooperatively altered amylose/amylopectin ratioand amylopectin structure.