Beneficial effects of mangiferin isolated from Salacia chinensis on biochemical and hematological parameters in rats with streptozotocin-induced diabetes

Salacia chinensis L. is a traditional Southeast Asian herbal medicine and used in the treatment of diabetes. To investigate the antidiabetic properties of mangiferin from Salacia chinensis and its beneficial effect on toxicological and hematological parameters in streptozotocin induced diabetic rats. Mangiferin was orally treated with the dose of 40 mg/kg body weight/day for 30 days to diabetic rats. Biochemical [blood glucose, uric acid, urea and creatinine], toxicological [AST, ALT and ALP] and hematological parameters [red and white blood cells] and their functional indices were evaluated in diabetic treated groups with mangiferin and glibenclamide. Mangiferin treated diabetic rats significantly [p<0.05] lowered the level of blood glucose, in addition, altered the levels of biochemical parameters including urea, uric acid, and creatinine. Toxicological parameters including AST, ALT and ALP were also significantly reduced after treatment with mangiferin in diabetic rats. Similarly, the levels of red blood, white blood cells and their functional indices were significantly improved through the administration of mangiferin. Thus, our results indicate that mangiferin present in S. chinensis possesses antidiabetic properties and nontoxic nature against chemically induced diabetic rats. Further experimental investigations are warrant to make use of its relevant therapeutic effect to substantiate its ethno-medicinal usage.

Biosorption of textile dyes and effluents by Pleurotus florida and Trametes hirsuta with evaluation of their laccase activity

The rate and efficiency of decolorization of dyes like Blue CA, Black B133, and Corazol Violet SR were tested to evaluate white rot fungal strains. Trametes hirsuta and Pleurotus florida showed the greatest extent of decolorization on nutrient salt media. Maximum decolorization of 200 mg/l of Blue 133 was obtained by 4 days old incubated Pleurotus florida followed by Trametes hirsuta after 6 days. An attempt was made to improve the decolorization activity of both organisms with different concentrations of glucose 1 and 2% [w/v]. The decolorization activity may be due to the laccase enzyme of white rot fungi. The production of this enzyme was estimated using solid state fermentation with rice bran as a substrate. It was found that P. florida exhibited 0.175 U/ml of laccase activity followed 0.126U/ml by T. hirsute, respectively. Decolourization was found to be more effective with P. florida in the presence of 2% [w/v] glucose. Crude extract containing the laccase enzyme was isolated and confirmed by SDS PAGE