A composition for prevention or treatment of metabolic syndrome or for antioxidation includes black soybean leaf extracts and flavonol glycoside compounds isolated thereof as active ingredients. It has been confirmed that the black soybean leaf extracts and the flavonol glycoside compounds isolated thereof effectively inhibit α-glucosidase activity; LDL oxidation and DDP-4; have excellent DPPH radical scavenging activity; inhibitory activity of reactive oxygen species (ROS) accumulation; effectively promote insulin secretion; regulate the expression of major genes; have an excellent ability to reduce a waist/hip circumference ratio; decrease the concentrations of plasma free fatty acid and plasma triglyceride; increase the concentration of plasma HDL-cholesterol; decrease an atherogenic index; increase erythrocyte catalase, SOD and GR activities; decrease erythrocyte lipid peroxide TBARS; decrease the concentrations of inflammatory cytokines MCP-1 and PAI-1, and resistin; and increase the concentration of plasma adiponectin.
一种用于预防或治疗代谢综合征或抗氧化的组合物包括作为活性成分的黑大豆叶
提取物及其分离的
黄酮醇苷化合物。经证实,黑豆叶
提取物及其分离出的
黄酮醇苷化合物能有效抑制α-
葡萄糖苷酶活性、低密度脂蛋白氧化和DDP-4;具有极佳的
DPPH自由基清除活性;抑制活性氧(ROS)积累;有效促进
胰岛素分泌;调节主要
基因的表达;具有极佳的降低腰围/臀围比的能力;降低血浆游离
脂肪酸和血浆
甘油三酯的浓度;提高血浆高密度脂蛋白
胆固醇的浓度;降低动脉粥样硬化指数;提高红细胞
过氧化氢酶、SOD 和 GR 活性;降低红细胞过氧化脂质 TBARS;降低炎症细胞因子 MCP-1 和 PAI-1 以及抵抗素的浓度;提高血浆脂肪连通素的浓度。