Bioactive phenolics from mango leaves (Mangifera indica L.)
2018
Pan, Jing | Yi, Xiaomin | Zhang, Shujuan | Zheng, Run | Wang, Yihai | Liu, Chunyu | He, Xiangjiu
Mango leaves (Mangifera indica L.) are a kind of crop waste and the present work is focusing on its bioactive constituents. Phytochemical study on the extract of mango leaves resulted in the isolation and identification of 5 benzophenones and 17 flavonoids. Among them, there were 4 new benzophenone glycosides, elucidated as 4′,6-dihydroxy-4-methoxybenzophenone-2-O-(2″),3-C-(1″)-1″-desoxy-β-fructopyranoside, 4,4′,6-trihydroxybenzophenone-2-O-(2″),3-C-(1″)-1″-desoxy-β-fructopyranoside, 4,4′,6-trihydroxybenzophenone-2-O-(2″),3-C-(1″)-1″-desoxy-β-fructofuranoside, and 2,4′,6-trihydroxy-4-methoxybenzophenone-3-C-(2-O-p-hydroxybenzoyl-p-hydroxybenzoyl)-α-d-galactoside, together with eighteen known compounds. The anti-inflammatory, antioxidant and α-glucosidase inhibitory activities of the isolated compounds were evaluated. The results displayed that some phenolics showed significant anti-inflammatory, antioxidant and antidiabetic activities. The study provided a phytochemical evidence for further development and utilization of mango leaves in health products.
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