Contents of flavonoids extracts from Mangifera indica by-products and the antioxidant activities.
Luo Qun, Huang ChunPing, Li Jiang, Li Qi
Author Affiliation: College of Life Sciences, Sichuan Normal University, Chengdu, Sichuan 610066, China.
Guizhou Agricultural Sciences 42 : 154-156
Abstract : To effectively utilize the mango by-products, twelve kinds of extracts with petroleum ether, ethyl acetate and n-butanol in turn from mango by-products, including mango leaves, mango peel, mango nuclear and mango root, were evaluated for their flavonoid contents by ultraviolet spectrophotometry and their antioxidant activities by DPPH feel radical systematic method, respectively. The results showed that; (1) the flavonoid content of mango leaves exceeded that of mango peel, mango nuclear or mango root extracted with the same reagent. On the other hand, in the same plant tissue the flavonoid content of extracts with ethyl acetate was more than with the other two reagent and the flavonoid content of mango leaves was (285.42±0.73) mg/g, mango peel (169.86±0.73) mg/g, mango nuclear (118.59±0.72) mg/g and mango root (35.53±0.40) mg/g. (2) There was a certain difference in antioxidant activity of 12 kinds of extracts. The strongest antioxidant activity was extract with ethyl acetate in the same tissue and the antioxidant activity of extracts with ethyl acetate were (91.12±0.52)% from mango leaves, (89.98±0.15)% from mango peel, (81.18±0.23)% from mango nuclear and (46.30±0.56)% from mango root respectively.