The growing number of sequenced microbial genomes has revealed a remarkably large number of secondary metabolite biosynthetic clusters for which the compounds are still unknown.The aim of the present work was to apply...The growing number of sequenced microbial genomes has revealed a remarkably large number of secondary metabolite biosynthetic clusters for which the compounds are still unknown.The aim of the present work was to apply a strategy to detect newly induced natural products by cultivating microorganisms in different fermentation conditions.The metabolomic analysis of 4160 fractions generated from 13 actinomycetes under 32 different culture conditions was carried out by 1H NMR spectroscopy and multivariate analysis.The principal component analysis(PCA)of the 1H NMR spectra showed a clear discrimination between those samples within PC1 and PC2.The fractions with induced metabolites that are only produced under specific growth conditions was identified by PCA analysis.This method allows an efficient differentiation within a large dataset with only one fractionation step.This work demonstrates the potential of NMR spectroscopy in combination with metabolomic data analysis for the screening of large sets of fractions.展开更多
利用1 H NMR法测定27个不同生长期的当归提取物,对当归的主要活性成分阿魏酸、藁本内酯、当归多糖进行了初步归属,用特征峰相对峰面积表示3种活性成分的相对含量,并对它们在生长过程中的含量变化进行分析.数据分析显示,当归中阿魏酸、...利用1 H NMR法测定27个不同生长期的当归提取物,对当归的主要活性成分阿魏酸、藁本内酯、当归多糖进行了初步归属,用特征峰相对峰面积表示3种活性成分的相对含量,并对它们在生长过程中的含量变化进行分析.数据分析显示,当归中阿魏酸、藁本内酯、当归多糖的含量在第1年变化较为平稳,第2年和第3年变化相对较为活跃,而在当归的生长周期内,当归多糖的含量变化明显大于其他两种活性成分,为参与代谢活动的主要活性成分.结果证实,通过对照1 H NMR指纹图谱,将相对含量法与主成分分析法相结合,能对不同生长期的当归药材中的活性成分进行宏观评价和分析,可作为植物药材代谢组学的研究方法.展开更多
基金This research was supported by an Australian Research Council(ARC)Linkage Project DP160101429,ARC project LP120100485the Bill&Melinda Gates Foundation Grand Challenges Explorations Grant Phase Ⅱ OPP1035218 GCE.M.Liu thanks Griffith University for the Publication Assistance Scholarship.
文摘The growing number of sequenced microbial genomes has revealed a remarkably large number of secondary metabolite biosynthetic clusters for which the compounds are still unknown.The aim of the present work was to apply a strategy to detect newly induced natural products by cultivating microorganisms in different fermentation conditions.The metabolomic analysis of 4160 fractions generated from 13 actinomycetes under 32 different culture conditions was carried out by 1H NMR spectroscopy and multivariate analysis.The principal component analysis(PCA)of the 1H NMR spectra showed a clear discrimination between those samples within PC1 and PC2.The fractions with induced metabolites that are only produced under specific growth conditions was identified by PCA analysis.This method allows an efficient differentiation within a large dataset with only one fractionation step.This work demonstrates the potential of NMR spectroscopy in combination with metabolomic data analysis for the screening of large sets of fractions.
文摘利用1 H NMR法测定27个不同生长期的当归提取物,对当归的主要活性成分阿魏酸、藁本内酯、当归多糖进行了初步归属,用特征峰相对峰面积表示3种活性成分的相对含量,并对它们在生长过程中的含量变化进行分析.数据分析显示,当归中阿魏酸、藁本内酯、当归多糖的含量在第1年变化较为平稳,第2年和第3年变化相对较为活跃,而在当归的生长周期内,当归多糖的含量变化明显大于其他两种活性成分,为参与代谢活动的主要活性成分.结果证实,通过对照1 H NMR指纹图谱,将相对含量法与主成分分析法相结合,能对不同生长期的当归药材中的活性成分进行宏观评价和分析,可作为植物药材代谢组学的研究方法.