Viscozyme L aided flavonoid extraction and identification of quercetin from Saururus chinensis (Lour.) Baill

  • Zheng, Hu-Zhe (Department of Health Science, Jiangsu Food & Pharmaceutical Science College) ;
  • Kwon, Sun-Young (School of Food Science and Biotechnology, Kyungpook National University) ;
  • Chung, Shin-Kyo (School of Food Science and Biotechnology, Kyungpook National University)
  • Received : 2020.06.24
  • Accepted : 2020.07.25
  • Published : 2020.09.30


In order to enhance the extraction efficiency of flavonoid from Saururus chinensis, carbohydrate-hydrolyzing enzyme Viscozyme L aided extraction techniques have been studied. Then flavonoid composition, as well as quercetin, were also identified using UV/Vis, HPLC/MS, and 1H-NMR. The results showed that favorable extraction conditions were Viscozyme L concentration of 0.25 mg/g, pH 4.2, reaction at 45 ℃ for 12 h. Under the favorable extraction condition, total flavonoid yield (37.9 mg/g) and quercetin yield (0.86 mg/g) increased by about 2.0 and 9.6 times, respectively, compared to control group. Interestingly, as a significant flavonoid of S. chinensis, flavonoid glycones rutin was hydrolyzed to aglycones quercetin by Viscozyme L. These findings provide scientific and theoretical support for the development quercetin-rich products, which was quickly absorbed by the human body than rutin.



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