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        KNO3/CaO as cost-effective heterogeneous catalyst for the synthesis of glycerol carbonate from glycerol and dimethyl carbonate

        Keke Hu,Huajun Wang,Yihua Liu,Chao Yang 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.28 No.-

        Various heterogeneous KNO3/CaO catalysts with different KNO3 loadings are prepared and used for thesynthesis of glycerol carbonate from glycerol and dimethyl carbonate. It is found that the basicity ofKNO3/CaO catalyst depends on the KNO3 loading and calcination temperature. Under the dimethylcarbonate/glycerol molar ratio of 3.0, reaction temperature of 70 8C, and reaction time of 2 h, the glycerolconversion for the fresh KNO3/CaO(15%, 700) catalyst can reach 99.23%. Recycling experiments revealthat 94.95% of glycerol conversion can be obtained at the fifth reuse for the recovered KNO3/CaO(15%,700), which is much higher than that of unmodified CaO.

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        Epigallocatechin-3-O-Gallate Protects Against Hepatic Damage and Testicular Toxicity in Male Mice Exposed to Di-(2-Ethylhexyl) Phthalate

        Jian Ge,Baoyu Han,Huajun Hu,Jun Liu,Yang Liu 한국식품영양과학회 2015 Journal of medicinal food Vol.18 No.7

        The aim of this study was to examine the effects of epigallocatechin-3-O-gallate (EGCG) on hepatic damage and testicular toxicity in male mice exposed to daily oral administration of di-(2-ethylhexyl) phthalate (DEHP). A mouse model was used to assess the effects of daily intraperitoneal EGCG injection on hepatic and testicular damage. Histological and mitochondrial membrane potential results revealed that EGCG treatment significantly arrested the progression of hepatic damage. EGCG treatment resulted in significant suppression of liver injury (i.e., reduced activities of alanine aminotransferase [ALT] and aspartate aminotransferase [AST]). The development of DEHP-induced hepatic and testicular damage altered thetestosterone concentration in mouse serum, which could affect the reproductive ability of male mice. Moreover, EGCG treatment markedly attenuated testes lesions, sperm deformity, and spermatogenic cell apoptosis. At the molecular level, hepatic CYP3A4 expression was substantially reduced by EGCG treatment in mice exposed to DEHP compounds, whereas testicular aromatase expression was increased significantly in testes. Thus, these results demonstrate that EGCG administration may protect against liver damage and reproductive toxicity in males exposed to DEHP.

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