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Isolation of homoisoflavonoids from the fibrous roots of Ophiopogon japonicus by recycling high-speed counter-current chromatography and online antioxidant activity assay

Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Two pairs of homoisoflavonoid analogues, 6-aldehydo-isoophiopogonanone A (1) / 6-aldehydo-isoophiopogonanone B (2) and methylophiopogonanone A (3) / methylophiopogonanone B (4), were obtained from the fibrous roots of Ophiopogon japonicus (L. f.) Ker-Gawl. (FROJ) by silica gel column chromatography (SGCC) and recycling high-speed counter-current chromatography (rHSCCC). First, the ethyl acetate fraction from the 70% ethanol extract was pre-separated by SGCC with a petroleum ether–ethyl acetate gradient (50:1–2:1, v/v). Then, the two sub-fractions containing homoisoflavonoid analogues were further separated by rHSCCC with n-hexane–ethyl acetate–methanol–acetonitrile–water (3:2:3.5:1:0.5, v/v) and n-hexane–ethyl acetate–methanol–acetonitrile–water (3:2:2.5:1:1.5, v/v). Finally, 6-aldehydo-isoophiopogonone A (16 mg), 6-aldehydo-isoophiopogonanone B (26 mg), methylophiopogonanone A (46 mg), and methylophiopogonanone B (148 mg) were obtained with purities of 97.82%, 96.70%, 97.76%, and 94.62%. Their structures were identified by high-resolution quadrupole-time-of-flight mass spectrometry (HR-QTOF-MS), ultraviolet (UV), and nuclear magnetic resonance spectroscopy (1H-NMR and 13C-NMR). These results demonstrated that rHSCCC could be used for the large scale preparation of homoisoflavonoid analogues from FROJ, which provides scientific support for utilization of untraditional medicinal part of O. japonicus and also for reduction in waste of plant resources. Additionally, an online antioxidant activity assay was investigated with hyphenated HSCCC-DPPH (1-diphenyl-2-picrylhydrazyl) radical scavenging detection.
Rocznik
Strony
272--279
Opis fizyczny
Bibliogr. 40 poz., rys., tab.
Twórcy
autor
  • School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
  • Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Produces, Hangzhou, 310023, China
  • Zhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacuring, 310023, China
autor
  • Zhejiang Academy of Forestry, Hangzhou, 310023, China.
autor
  • School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
  • Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Produces, Hangzhou, 310023, China
  • Zhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacuring, 310023, China
autor
  • School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
autor
  • School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
  • Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Produces, Hangzhou, 310023, China
  • Zhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacuring, 310023, China
autor
  • School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou, 310023, China
  • Zhejiang Provincial Key Lab for Chemical and Biological Processing Technology of Farm Produces, Hangzhou, 310023, China
  • Zhejiang Province Collaborative Innovation Center of Agricultural Biological Resources Biochemical Manufacuring, 310023, China
Bibliografia
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Uwagi
PL
Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-a5807342-5f2d-41f2-9972-b3cb1baaea0d
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