Fujian Journal of Agricultural Sciences ›› 2018, Vol. 33 ›› Issue (6): 649-654.doi: 10.19303/j.issn.1008-0384.2018.06.019

• Food Science • Previous Articles    

Process and Antioxidant Activity of Flavonoid Extract from Abelmoschus esculentus

DENG Hao1,2, YIN Qing-chun3, ZHANG Rong-hu1,2, FENG Jian-cheng4, YU Huan-huan3   

  1. 1. Institute of Processing & Design of Agroproducts, Hainan Academy of Agricultural Science, Haikou, Hainan 570100, China;
    2. Hainan Tropical Fruit and Vegetable Cold-chain Keylaboratory, Haikou, Hainan 570100, China;
    3. Hainan Institute for Food Control, Haikou 570100;
    4. College of Materials and Chemical Engineering, Hainan University, Haikou, Hainan 570100, China
  • Received:2017-12-25 Revised:2018-03-21 Published:2019-03-29

Abstract: A microwave-assisted processes to extract flavonoids from Abelmoschus esculentus was optimized by a single factor and orthogonal experiment. By using 70% ethanol as the solvent, A. esculentus in a solid-liquid ratio of 1:40 (g·mL-1)was extracted at 70℃ for 40 minutes. The yield of flavonoids was 2.78% with a relative standard deviation of 0.635%. The resulting extract was tested for its antioxidant activity by means of DPPH and ABTS radical scavenging capabilities to show IC50at 1.21 mg·mL-1 and 1.06 mg·mL-1, respectively. It appeared that the current method could render a high yield on flavonoids that showed a substantial antioxidative activity.

Key words: microwave, Abelmoschus esculeutus, flavonoids, extraction, antioxidant activity

CLC Number: 

  • S662