title: [Optimization of hydrolysis process of linarin using response surface methodology and research about ARI activity of glycosylation-acacetin].
abstract: OBJECTIVE
  To optimize the hydrolysis process of linarin by response surface methodology, and to use the model of aldose reductase to study the acacetin's activity of aldose reductase inhibitory.
  
  
  METHODS
  The model of acacetin enzyme in vitro was established by the determination of fluorescence absorption of NADPH, the inhibition rate of acacetin aldose reductase was calculated, and then the IC50 of hydrolysis was obtained. The hydrolysis process of linarin hydrolysis condition was optimized by using response surface method.
  
  
  RESULTS
  The results indicated that the IC50 of acacetin (2.74 mg x L(-1)) was less than the IC50 of linarin (3.53 mg x L(-1)). Hydrolyzation time of 7.4 h, sulphuric acid concentration of 0.54 mol x L(-1) and the ratio of material to liquid of 3 : 1 were the optimum conditions.
  
  
  CONCLUSIONS
  Hydrolyzate acacetin has preferable inhibitory activity of aldose reductase. The optimized hydrolysis condition of linarin is convenient to use with good predictability.
authors.forename: Jiao
authors.initials: J
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Tie-Jun
authors.initials: TJ
authors.lastname: Zhang
mesh_terms: D000449:Aldehyde Reductase / Q000037:antagonists & inhibitors* / Q000378:metabolism; D000818:Animals; D003930:Diabetic Retinopathy / Q000201:enzymology; D004365:Drugs, Chinese Herbal / Q000737:chemistry* / Q000494:pharmacology; D004791:Enzyme Inhibitors / Q000737:chemistry* / Q000494:pharmacology; D047309:Flavones / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry* / Q000494:pharmacology; D006031:Glycosylation; D006801:Humans; D006868:Hydrolysis; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D012160:Retina / Q000201:enzymology
chemical_list: D004365:Drugs, Chinese Herbal; D004791:Enzyme Inhibitors; D047309:Flavones; D006027:Glycosides; D000449:Aldehyde Reductase; C008282:linarin; C023717:acacetin