کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
70646 | 48839 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Guaiacol-mediated oxidative degradation and polymerization of bisphenol A catalyzed by bitter gourd (Momordica charantia) peroxidase Guaiacol-mediated oxidative degradation and polymerization of bisphenol A catalyzed by bitter gourd (Momordica charantia) peroxidase](/preview/png/70646.png)
Peroxidase from bitter gourd was found to be highly effective in the oxidative degradation and polymerization of endocrine disrupting compound, bisphenol A. Bisphenol A was recalcitrant to the action of bitter gourd peroxidase. However, the oxidation of bisphenol A by bitter gourd peroxidase was enhanced remarkably in the presence of a redox mediator, guaiacol. Maximum oxidation of bisphenol A was observed in the presence of 0.3 mM guaiacol, 0.75 mM H2O2 and 0.32 U mL−1 bitter gourd peroxidase in the buffer of pH 7.0 at 40 °C. In batch process, 90% bisphenol A was removed by this enzyme in 4 h. FT-IR spectral analysis showed the presence of OH group (3308 cm−1) and the benzene groups (1624 and 1224 cm−1) on the bitter gourd peroxidase-oxidized product. 4-Isopropenylphenol was identified as one of the peroxidase-catalyzed oxidation products of bisphenol A by GC–MS and 1H NMR spectral analysis.
Journal: Journal of Molecular Catalysis B: Enzymatic - Volume 59, Issues 1–3, July 2009, Pages 185–189