Total nucleosides in sporophore of \%Ganoderma lucidum \%(Leyss. ex Fr.) Karst produced in different locality was determinated by the UV\|spectrophotometry. The contents of total nucleosides in sporophore of \%G. luci...Total nucleosides in sporophore of \%Ganoderma lucidum \%(Leyss. ex Fr.) Karst produced in different locality was determinated by the UV\|spectrophotometry. The contents of total nucleosides in sporophore of \%G. lucidum \%from Guangxi of China and Viet Nam were 0.33%and 0.34%, the higher contents from Taiwan, Jiangsu and Guangdong were 0.40%～0.46% and lower contents from Yunnan were 0.16%～0.21%. The research proposed a criterion on the quality of \%G. lucidum \%and a brief discussion about its utilization and development. The TLC identification of uracil, adenine, adenosine and uridine in sporophore of \%G. lucidum \%was carried out. The methodological study indicated that the method was simple, reliable and specific.展开更多
利用紫外分光光度法和2,4-二硝基苯肼法测定果蔬中维生素C含量.并对碱液加入量,静置时间,活性炭用量及水浴时间等方面做了进一步优化选择.发现在紫外分光光度法中以4 m L碱液加入量,静置20 min测得的维生素C的含量与2,4-二硝基苯肼法中...利用紫外分光光度法和2,4-二硝基苯肼法测定果蔬中维生素C含量.并对碱液加入量,静置时间,活性炭用量及水浴时间等方面做了进一步优化选择.发现在紫外分光光度法中以4 m L碱液加入量,静置20 min测得的维生素C的含量与2,4-二硝基苯肼法中,以活性炭用量1 g,水浴时间3 h测得的维生素C含量结果相比较,同种果蔬中维生素C含量结果相近,但紫外分光光度法较2,4-二硝基苯肼法操作简单、快速,抗干扰强,成本低,回收率高,对环境污染小,符合"绿色化学"的理念,更值得推广应用.展开更多
文摘Total nucleosides in sporophore of \%Ganoderma lucidum \%(Leyss. ex Fr.) Karst produced in different locality was determinated by the UV\|spectrophotometry. The contents of total nucleosides in sporophore of \%G. lucidum \%from Guangxi of China and Viet Nam were 0.33%and 0.34%, the higher contents from Taiwan, Jiangsu and Guangdong were 0.40%～0.46% and lower contents from Yunnan were 0.16%～0.21%. The research proposed a criterion on the quality of \%G. lucidum \%and a brief discussion about its utilization and development. The TLC identification of uracil, adenine, adenosine and uridine in sporophore of \%G. lucidum \%was carried out. The methodological study indicated that the method was simple, reliable and specific.
