Fish livers a good source of long-chain polyunsaturated fatty acids and omega 3, are usually discarded as a waste when fish are processed for human consumption in Sudan. Highly fresh <span style="font-family:V...Fish livers a good source of long-chain polyunsaturated fatty acids and omega 3, are usually discarded as a waste when fish are processed for human consumption in Sudan. Highly fresh <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Triaenodon obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and</span><i> </i></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"><i></i></span></i></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Hipposcarus harid</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span><span><i><span style="font-family:;" "=""> </span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">fish were purchased from Port Sudan fish central market during December 2014. The fatty acid profiles of the livers of these commercially important fish were determined. The polyunsaturated and saturated fatty acids ratio in the livers oil of </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">T. obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> and </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">H. harid</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> was 1:2.2 and 1:1.38, respectively. The Palmatic (16:0), Pentadecenoic (12:0) and Arachidic acids were the highest in both species. The poly chain unsaturated fatty acids Linolenic (18:3n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3), Eicosapentaenoic (20:5n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3) and Docosahexaenoic (22:6n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3) were detected in the liver of both species. The highest values of above poly chain unsaturated fatty acids were detected in </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">T. obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">.</span></i></span></span>展开更多
采用石墨炉原子吸收法直接测定鲨鱼肝脏中的痕量镉,试验发现,在HNO3-H2SO4-HClO4体系、HNO3-H2O2体系、HCl-HNO3体系、HF-HClO4体系中,以HF-HClO4体系消化效果最佳,经试验,0.2 g样品用1 mL HF,2 mL HClO4消溶效果较好。以HF-HClO4体系...采用石墨炉原子吸收法直接测定鲨鱼肝脏中的痕量镉,试验发现,在HNO3-H2SO4-HClO4体系、HNO3-H2O2体系、HCl-HNO3体系、HF-HClO4体系中,以HF-HClO4体系消化效果最佳,经试验,0.2 g样品用1 mL HF,2 mL HClO4消溶效果较好。以HF-HClO4体系为消化试样、微波消解,用Pd(NO3)2作基体改进剂,灰化温度1 000℃,原子化温度2 200℃。该方法相对标准偏差为1.5%,标准物质测定值在其推荐值范围内,该方法快速、简便、准确。展开更多
以400 m g/kg 2次腹腔注射硫代乙酰胺(TAA)建立大鼠急性肝损伤模型,并在注射TAA前1 h以80 m g/kg 2次腹腔注射鲨鱼肝蛋白粗提物进行预防,研究了鲨鱼肝蛋白粗提物对大鼠肝线粒体抗氧化功能的影响。注射TAA后,大鼠肝脏线粒体腺苷二磷酸(A...以400 m g/kg 2次腹腔注射硫代乙酰胺(TAA)建立大鼠急性肝损伤模型,并在注射TAA前1 h以80 m g/kg 2次腹腔注射鲨鱼肝蛋白粗提物进行预防,研究了鲨鱼肝蛋白粗提物对大鼠肝线粒体抗氧化功能的影响。注射TAA后,大鼠肝脏线粒体腺苷二磷酸(ADP)诱导的氧消耗、呼吸控制率(RCR)、磷/氧比(P/O)、氧化磷酸化率均低于对照组,而预防组线粒体ADP诱导的氧消耗、呼吸控制率、P/O和氧化磷酸化效率均高于模型组;TAA降低了线粒体中谷胱甘肽、谷胱甘肽还原酶、谷胱甘肽过氧化物酶的水平,而鲨鱼肝蛋白粗提物则使线粒体中谷胱甘肽过氧化物酶和超氧化物歧化酶的水平明显升高,说明鲨鱼肝蛋白粗提物能部分修复线粒体受损的呼吸功能,增强线粒体抗氧化能力。展开更多
文摘Fish livers a good source of long-chain polyunsaturated fatty acids and omega 3, are usually discarded as a waste when fish are processed for human consumption in Sudan. Highly fresh <span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Triaenodon obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span><span><span style="font-family:;" "=""><span style="font-family:Verdana;"> and</span><i> </i></span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"><i></i></span></i></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">Hipposcarus harid</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span><span><i><span style="font-family:;" "=""> </span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">fish were purchased from Port Sudan fish central market during December 2014. The fatty acid profiles of the livers of these commercially important fish were determined. The polyunsaturated and saturated fatty acids ratio in the livers oil of </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">T. obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> and </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">H. harid</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> was 1:2.2 and 1:1.38, respectively. The Palmatic (16:0), Pentadecenoic (12:0) and Arachidic acids were the highest in both species. The poly chain unsaturated fatty acids Linolenic (18:3n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3), Eicosapentaenoic (20:5n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3) and Docosahexaenoic (22:6n</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">3) were detected in the liver of both species. The highest values of above poly chain unsaturated fatty acids were detected in </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i></i></span></span></span><i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">T. obesus</span></i></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;"></span></i></span></span></i><span style="font-family:Verdana;"><span style="font-family:Verdana;"><i><span style="font-family:Verdana;">.</span></i></span></span>
文摘采用石墨炉原子吸收法直接测定鲨鱼肝脏中的痕量镉,试验发现,在HNO3-H2SO4-HClO4体系、HNO3-H2O2体系、HCl-HNO3体系、HF-HClO4体系中,以HF-HClO4体系消化效果最佳,经试验,0.2 g样品用1 mL HF,2 mL HClO4消溶效果较好。以HF-HClO4体系为消化试样、微波消解,用Pd(NO3)2作基体改进剂,灰化温度1 000℃,原子化温度2 200℃。该方法相对标准偏差为1.5%,标准物质测定值在其推荐值范围内,该方法快速、简便、准确。
文摘以400 m g/kg 2次腹腔注射硫代乙酰胺(TAA)建立大鼠急性肝损伤模型,并在注射TAA前1 h以80 m g/kg 2次腹腔注射鲨鱼肝蛋白粗提物进行预防,研究了鲨鱼肝蛋白粗提物对大鼠肝线粒体抗氧化功能的影响。注射TAA后,大鼠肝脏线粒体腺苷二磷酸(ADP)诱导的氧消耗、呼吸控制率(RCR)、磷/氧比(P/O)、氧化磷酸化率均低于对照组,而预防组线粒体ADP诱导的氧消耗、呼吸控制率、P/O和氧化磷酸化效率均高于模型组;TAA降低了线粒体中谷胱甘肽、谷胱甘肽还原酶、谷胱甘肽过氧化物酶的水平,而鲨鱼肝蛋白粗提物则使线粒体中谷胱甘肽过氧化物酶和超氧化物歧化酶的水平明显升高,说明鲨鱼肝蛋白粗提物能部分修复线粒体受损的呼吸功能,增强线粒体抗氧化能力。