Purification and Characterization of New Special Ginsenosidase Hydrolyzing Multi-Glycisides of Protopanaxadiol Ginsenosides, Ginsenosidase Type 1

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  • Yu Hongshan
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1
  • Zhang Chunzhi
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1
  • Lu Mingchun
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1
  • Sun Fang
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1
  • Fu Yaoyao
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1
  • Jin Fengxie
    College of Bio & Food Technology, Dalian Institute of Light Industry Qinggong-yuan No 1

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  • Purification and Characterization of New Special Ginsenosidase Hydrolyzing Multi-Glycisides of Protopanaxadiol Ginsenosides, Ginsenosidase Type I

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In this paper, the new type ginsenosidase which hydrolyzing multi-glycosides of ginsenoside, named ginsenoside type I from Aspergillus sp.g48p strain was isolated, characterized and generally described. The enzyme molecular weight was about 80 kDa. Ginsenosidase type I can hydrolyze different glycoside of protopanaxadiol type ginsenosides (PPD); i.e., can hydrolyze the 3(carbon)-O-β-glucoside of Rb1, Rb2, Rb3, Rc, Rd; can hydrolyze 20(carbon)-O-β-glucoside of Rb1, 20-O-β-xyloside of Rb3, 20-O-α-arabinoside(p) of Rb2 and 20-O-α-arabinoside(f) of Rc to produce mainly F2, compound-K (C-K) and small Rh2, but can not hydrolyze the glycosides of protopanaxatriol type ginsenoside (PPT) such as Re, Rf, Rg1. So, when the ginsenosidase type I hydrolyzed ginsenosides, the enzyme selected ginsenoside-aglycone type, can hydrolyze different glycosides of PPD type ginsenoside; however no selected glycoside type, can hydrolyze multi-glycosides of PPD type ginsenosides. These properties were novel properties, and differentiated with the other previously described glycosidases.

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