基于化学计量学对不同产地生姜的质量评价

Quality Evaluation of Zingiber officinale from Different Origins Based on Chemometrics

为综合评价不同产地生姜质量,对红河、文山、曲靖、乐山、济宁5个地区42个生姜样品的6-姜辣素、8-姜酚、10-姜酚、挥发油含量及理化指标进行测定,并采用化学计量学方法对生姜质量及分类情况进行评价。采用OriginPro 2023软件进行聚类分析和主成分分析,聚类结果表明各产地样本及变量聚类情况存在关联,其中云南省红河、文山及曲靖三地样本较为相近,乐山市犍为县与济宁样本较为相近。主成分分析则表明云南省样本分布较为集中,乐山市2个产地样本较为相近,且犍为县与济宁市样本较为相近,综合评分结果显示云南省样品综合评分相对较高。采用SIMCA14.1软件进行正交偏最小二乘判别分析,云南省、乐山市和济宁市样本可实现有效区分,挥发油、总灰分和8-姜酚为区分3个组别样本的代表性差异性成分。

In order to comprehensively evaluate the quality of ginger(Zingiber officinale)from different origins,the contents of 6-gingerol,8-gingerol,10-gingerol,volatile oil and physicochemical indexes of 42 ginger samples from Honghe,Wenshan,Qujing,Leshan and Jining are determined.The quality and classification of ginger are evaluated by chemometrics.Cluster analysis and principal component analysis are carried out by using OriginPro 2023 software.The clustering results show that there is a correlation between samples and variables from different origins,among which the samples from Honghe,Wenshan and Qujing in Yunnan Province are similar,and Qianwei County of Leshan City is similar to Jining sample.PCA shows that the sample distribution of Yunnan Province is more concentrated,the samples from the two origins in Leshan are relatively similar,and the samples of Jianwei County and Jining City are relatively similar.The comprehensive score results show that the comprehensive score of Yunnan Province samples is relatively high.The orthogonal partial least square discriminant analysis is carried out by using SIMCA14.1 software.The samples of Yunnan Province,Leshan City and Jining City can be distinguished effectively.Volatile oil,total ash and 8-gingerol are the representative differences among the three groups.