Enzymolysis-ultrasound-assisted surfactant extraction and antioxidant activity of saponins from Panax notoginseng flowers

  • CHEN Honghui ,
  • TARUN BELWAL ,
  • LI Gangfeng ,
  • LUO Zisheng
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  • 1(College of Chemistry and Engineering, Wenshan University, Wenshan 663099, China);
    2(College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058,China);
    3(Fuli Institute of Food Science, Zhejiang University, Hangzhou 310058, China);
    4(Key Laboratory of Agro-Products Postharvest Handling, Ministry of Agriculture and Rural Affairs, China National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, Zhejiang University, Hangzhou 310058,China)

Received date: 2020-06-23

  Revised date: 2020-07-21

  Online published: 2020-11-12

Abstract

An enzymolysis-ultrasound-assisted surfactant extraction method was developed and optimized to enhance the saponins yield from Panax notoginseng flowers. The Triton X-100 surfactant was used as extraction solvent. When the enzyme concentration was 0.2%, solvent to sample ratio at 30∶1(mL∶g) and Triton X-100 solution at pH 5, the optimal extraction condition of enzymolysis-ultrasound-assisted surfactant extraction was as follows: Enzymolysis temperature at 60 ℃ and ultrasonication power was 465 W for 40 min. Under the optimized condition, the yield of total saponin was 16.38%, which is significantly higher than that of traditional heat reflux extraction and ultrasound-assisted extraction methods. In addition,the antioxidant activity of Panax notoginseng saponins extracted by three processes showed that the Panax notoginseng saponins extracted by enzymolysis-ultrasound-assisted surfactant extraction method had higher scavenging ability of DPPH free radicals and stronger total antioxidant capacity. In case of protecting activity against DNA damage,0.156 mg/mL of saponins was optimum. Our finding clearly demonstrated that the developed novel enzymolysis-ultrasound-assisted surfactant extraction method could be applied to gain higher extraction efficiency of saponins, and the developed method is environmentally safe and easy to be scaled up.

Cite this article

CHEN Honghui , TARUN BELWAL , LI Gangfeng , LUO Zisheng . Enzymolysis-ultrasound-assisted surfactant extraction and antioxidant activity of saponins from Panax notoginseng flowers[J]. Food and Fermentation Industries, 2020 , 46(20) : 178 -186 . DOI: 10.13995/j.cnki.11-1802/ts.024843

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