Summary

Extraction – Hydrolysis and Comparison of Anti-oxidant Activity of some Flavonoids from Sophora japonica and Citrus deliciosa Peel.

We extracted flavonoids such as rutin (from Vietnamese Sophora japonica L.), hesperidin (from Vietnamese Pericarpium Citri deliciosa). On the basis of rutin and hesperidin, hydrolysis was performed to produce quercetin and hesperetin which have high purity. The products’ structure was determined by using physical chemistry analyses (melting point, UV-Vis, IR, MS, HPLC) and comparison with published data. The results of antioxidant activity showed that rutin and quercetin have stronger antioxidant activity than hesperidin and hesperetin.

Keywords: Rutin, Quercetin, Hesperidin, Hesperetin, anti-oxidant.

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