Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleve...Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleven trace element concentrations were determined by ICP-OES and processed by multivariate statistical analysis.Results: Based on ANOVA, the mean concentrations of 10 elements except Co differed significantly among six origins. Pearson’s correlation analysis showed that 11 pairs of elements have a positive significant correlation and 12 pairs have a negative significant correlation. The geographical origins were effectively differentiated using the eleven elements combined with PCA. And the S-LDA model offered a 100%differentiation rate.Conclusion: The overall results suggested that the combination of multielement analysis by ICP-OES and chemometrics multivariate could trace the geographical origins of tea. And the paper can provide reference for quality control and quality evaluation of C. paliurus in the future.展开更多
目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HU...目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HUVEC细胞生长的影响。结果:PCP I、II在50、100、200、400μg/ml浓度条件下,均可极显著性抑制HeLa细胞生长(p<0.01)。PCP I、II对HUVEC细胞生长有一定影响,但增殖抑制率不高;在PCP抑癌作用最高的浓度处(200μg/ml),PCP对HUVEC细胞的生长没有影响。结论:PCP极显著性抑制HeLa细胞的生长;在P C P抑癌作用最高的浓度处,P C P对H U V E C细胞的生长没有影响。展开更多
利用超声波法提取青钱柳多糖,研究了超声时间、超声功率、料液比对青钱柳多糖得率的影响,并采用正交试验对青钱柳多糖提取工艺进行优化设计。结果表明,超声波法提取青钱柳多糖的最佳条件为:超声时间70 m in,超声功率1 200 W,料液比1∶1...利用超声波法提取青钱柳多糖,研究了超声时间、超声功率、料液比对青钱柳多糖得率的影响,并采用正交试验对青钱柳多糖提取工艺进行优化设计。结果表明,超声波法提取青钱柳多糖的最佳条件为:超声时间70 m in,超声功率1 200 W,料液比1∶10。超声功率和超声时间对提取青钱柳多糖的影响分别为显著差异和极显著差异,因此利用超声波法提取青钱柳多糖可以缩短提取时间,提高得率。展开更多
本文研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人胃癌MGC_803细胞生长的影响。采用噻唑蓝(MTT)法检测PCP对MGC_803细胞生长的影响;Annexin法检测PCP对MGC803细胞诱导凋亡的作用。实...本文研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人胃癌MGC_803细胞生长的影响。采用噻唑蓝(MTT)法检测PCP对MGC_803细胞生长的影响;Annexin法检测PCP对MGC803细胞诱导凋亡的作用。实验结果表明PCP在50、100、200、400μg/mL浓度条件下,均可极显著性抑制人胃癌MGC_803细胞生长(P<0.01),抑制率可达65.07%,细胞凋亡率可达25.44%。说明青钱柳多糖具有抑制人胃癌MGC803细胞生长的生物活性。展开更多
基金supported by the National Natural Science Foundation of China(No.81360631)Project of the Key Research and Development Program for Jiangxi Province(No.20203BBGL73218)。
文摘Objective: This paper focused on the geographical discrimination of Cyclocarya paliurus tea for origin traceability based on multielement analysis by ICP-OES and chemometrics multivariate.Methods: In this study, eleven trace element concentrations were determined by ICP-OES and processed by multivariate statistical analysis.Results: Based on ANOVA, the mean concentrations of 10 elements except Co differed significantly among six origins. Pearson’s correlation analysis showed that 11 pairs of elements have a positive significant correlation and 12 pairs have a negative significant correlation. The geographical origins were effectively differentiated using the eleven elements combined with PCA. And the S-LDA model offered a 100%differentiation rate.Conclusion: The overall results suggested that the combination of multielement analysis by ICP-OES and chemometrics multivariate could trace the geographical origins of tea. And the paper can provide reference for quality control and quality evaluation of C. paliurus in the future.
文摘目的:研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人宫颈癌HeLa细胞和人脐带内皮细胞(HUVEC)生长的影响。方法:采用噻唑蓝(MTT)法,观察不同浓度、不同提取方法获得的PCP对HeLa细胞和HUVEC细胞生长的影响。结果:PCP I、II在50、100、200、400μg/ml浓度条件下,均可极显著性抑制HeLa细胞生长(p<0.01)。PCP I、II对HUVEC细胞生长有一定影响,但增殖抑制率不高;在PCP抑癌作用最高的浓度处(200μg/ml),PCP对HUVEC细胞的生长没有影响。结论:PCP极显著性抑制HeLa细胞的生长;在P C P抑癌作用最高的浓度处,P C P对H U V E C细胞的生长没有影响。
文摘利用超声波法提取青钱柳多糖,研究了超声时间、超声功率、料液比对青钱柳多糖得率的影响,并采用正交试验对青钱柳多糖提取工艺进行优化设计。结果表明,超声波法提取青钱柳多糖的最佳条件为:超声时间70 m in,超声功率1 200 W,料液比1∶10。超声功率和超声时间对提取青钱柳多糖的影响分别为显著差异和极显著差异,因此利用超声波法提取青钱柳多糖可以缩短提取时间,提高得率。
文摘本文研究青钱柳多糖(polysaccharides isolated from Cyclocarya paliurus(Batal.)Iljinskjk,PCP)对人胃癌MGC_803细胞生长的影响。采用噻唑蓝(MTT)法检测PCP对MGC_803细胞生长的影响;Annexin法检测PCP对MGC803细胞诱导凋亡的作用。实验结果表明PCP在50、100、200、400μg/mL浓度条件下,均可极显著性抑制人胃癌MGC_803细胞生长(P<0.01),抑制率可达65.07%,细胞凋亡率可达25.44%。说明青钱柳多糖具有抑制人胃癌MGC803细胞生长的生物活性。
