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中国精品科技期刊2020
王晓敏, 史冠莹, 王赵改, 张乐, 程菁菁, 蒋鹏飞, 赵丽丽. 基于双指标分析法和聚类分析法的香椿红外指纹图谱研究[J]. 食品工业科技, 2019, 40(20): 231-236. DOI: 10.13386/j.issn1002-0306.2019.20.037
引用本文: 王晓敏, 史冠莹, 王赵改, 张乐, 程菁菁, 蒋鹏飞, 赵丽丽. 基于双指标分析法和聚类分析法的香椿红外指纹图谱研究[J]. 食品工业科技, 2019, 40(20): 231-236. DOI: 10.13386/j.issn1002-0306.2019.20.037
WANG Xiao-min, SHI Guan-ying, WANG Zhao-gai, ZHANG Le, CHENG Jing-jing, JIANG Peng-fei, ZHAO Li-li. Infrared Fingerprint Spectra Analysis of Toona sinensis Based on Sequential Dual-indexes and Cluster Analysis Method[J]. Science and Technology of Food Industry, 2019, 40(20): 231-236. DOI: 10.13386/j.issn1002-0306.2019.20.037
Citation: WANG Xiao-min, SHI Guan-ying, WANG Zhao-gai, ZHANG Le, CHENG Jing-jing, JIANG Peng-fei, ZHAO Li-li. Infrared Fingerprint Spectra Analysis of Toona sinensis Based on Sequential Dual-indexes and Cluster Analysis Method[J]. Science and Technology of Food Industry, 2019, 40(20): 231-236. DOI: 10.13386/j.issn1002-0306.2019.20.037

基于双指标分析法和聚类分析法的香椿红外指纹图谱研究

Infrared Fingerprint Spectra Analysis of Toona sinensis Based on Sequential Dual-indexes and Cluster Analysis Method

  • 摘要: 采用双指标序列分析法和聚类分析法对13个不同产地的香椿样品(T1~T13)的红外指纹图谱进行比较分析。结果表明:不同产地香椿的红外光谱基本一致,主要显示为多糖、蛋白质、氨基酸和多酚的特征峰,但在3400~2800和1700~1000 cm-1波段范围吸收峰的数目、形状和强度存在一定差异。不同产地香椿样品之间的共有峰率在27.78%~84.62%,变异峰率在0~160%。产地相近的T7和T1、T4之间有较高的共有峰率(均为84.62%)和很低的变异峰率(均为18.18%);产地相距较远的T5和T8、T10、T12之间有很低的共有峰率(≤ 31.25%)和很高的变异峰率(≥ 100%)。聚类分析直观地将不同产地香椿样品分为四类,方法相对简便,但精度相对较低。因此,红外指纹图谱结合双指标序列法或聚类分析,可以作为鉴别不同产地香椿的辅助手段,为香椿产地鉴别提供一定的依据。

     

    Abstract: The methods of sequential analysis of dual-indexes and cluster analysis were utilized to investigate the infrared fingerprints of Toona sinensis(T1~T13)collected from 13 different areas. Results showed that,the T. sinensis from different areas had the similar characteristic peaks of infrared spectra,and the IR characteristic peaks obviously appear as the main characteristic peaks with the type of proteins,polysaccharides,amino acids and polyphenols,but there were still some differences in the number,shape and intensity of the absorption peaks in the range of fingerprint regions 3400~2800 and 1700~1000 cm-1. The common peak ratio between the samples from different habitats was 27.78%~84.62%,and the variation peak ratio was 0~160%. The samples T7 and T1,T4 from the closer regions were the relatively similar samples with higher common peak ratio(84.62%)and a very low variant peak ratio(18.18%). T5 and T8,T10,T12 from the farther regions were of significant disparity with common peak ratio less than 31.25% and variant peak ratio larger than 100%. The cluster analysis intuitively divided the samples into four categories. The method was relatively simple,but the effect of cluster analysis was relatively poor. The infrared fingerprint coupled with the methods of sequential analysis of dual-indexes and cluster analysis could serve as an auxiliary way to identify different origins of T. sinensis,and provide a basis for identification of T. sinensis from different areas.

     

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