추출조건에 따른 콩잎 추출물의 이소플라본 함량 및 이화학적 특성

초록

To utilize soybean leaf, which is a waste product in soybean production, as a value-added food material, this study aimed to investgate the extraction efficiency of isoflavone from soybean leaf and to characterize physicochemical properties of the extract. Maximum isoflavone content of 59.74 ± 4.54 mg/l was obtained from soybean leaf extracted at 90℃ for 12 h. DPPH (1,1-diphenyl-2-pricylhydrazyl) radical-scavenging activity and total polyphenol contents reached maximum levels of 67.26 ± 3.64% and 1,688.68 ± 97.37 μg/ml chlorogenic acid equivalent, respectively. Based on the contents of isoflavone and total polyphenol, and DPPH radical-scavenging activity, optimum extraction conditions for soybean leaf using water as solvent were 90℃ and 12 h.

키워드