加国头条 i4cc.ca ｜陕西师范大学孙立军和郭玉蓉团队在中国不同产地黑果枸杞花青素组成研究方面取得了进展

陕西师范大学孙立军和郭玉蓉团队在中国不同产地黑果枸杞花青素组成研究方面取得了进展

欢迎点击【药用植物研究前沿】↑关注我们！

内容来源于Food Chem

中国不同产地黑果枸杞花青素组成的比较及多元统计分析

黑果枸杞为茄科枸杞属多年生灌木,主要分布于中亚地区，具极高的营养保健价值。近期，陕西师范大学孙立军和郭玉蓉研究团队发表在“Food Chem”名为“Comparison and multivariate statistical analysis of anthocyanin composition in Lycium ruthenicum Murray from different regions to trace geographical origins: The case of China.”的论文在中国不同产地黑果枸杞花青素组成研究方面取得了进展。该研究团队采用高效液相色谱-电喷雾电离-质谱法对45份黑果枸杞样品中的花青素进行了鉴定，并用高效液相色谱-二极管阵列检测器紫外光谱法对样品进行了定量分析。结果表明，不同省份黑果枸杞的花色素种类相同，但不同花色素类化合物的浓度和总浓度存在显著差异，表明地理来源对花色素组成具有重要影响，可作为黑果枸杞分类的可靠指标。该团队应用主成分分析和线性判别分析建立了黑果枸杞的判别模型。主成分分析可根据其地理起源清楚地将不同产地的黑果枸杞样品分开。线性判别分析可完全将不同来源的黑果枸杞进行分类。该研究结果可用于黑果枸杞地理起源的追溯。

Food Chem 2018; 246:233-241

doi:10.1016/j.foodchem.2017.11.030

Comparison and multivariate statistical analysis of anthocyanin composition in Lycium ruthenicum Murray from different regions to trace geographical origins: The case of China

Anthocyanin composition in forty-five Lycium ruthenicum Murray (LRM) samples grown in China was identified by high-performance liquid chromatography-electrospray ionisation-mass spectrometry (HPLC-ESI-MS) and quantified by HPLC with a diode array detector (HPLC-DAD). The results showed that the overall pattern of anthocyanin composition of LRM from different provinces was the same, while the individual and total anthocyanin concentrations, were significantly different, indicating an important impact of geographical origin on anthocyanin composition, which can be considered as credible indices for LRM classification. Principal component analysis (PCA) and linear discriminant analysis (LDA) were applied to develop discrimination models for the anthocyanin concentrations. PCA clearly separated the LRM based on its geographical origins. LDA satisfactorily categorized the samples by providing a 100% success rate based on geographical origins. The results obtained could be used to trace the geographical origin of LRM.