基于碳氮稳定同位素特征差异的三七真伪判别
Identification of Panax notoginseng Based on the Difference of Stable Isotope Characteristics of Carbon and Nitrogen
王海燕 1范稚莉 1冯家望 1明荔莉 1唐梓意1
作者信息
- 1. 拱北海关技术中心,广东珠海 519000
- 折叠
摘要
利用稳定同位素质谱技术,分析三七及其伪品(莪术、姜黄、菊叶三七、竹节参、水三七、景天三七)的碳、氮稳定同位素比值特征,探讨该技术用于三七真伪判别的可行性.建立元素分析-稳定同位素质谱法,测定三七、三七伪品中δ13C值、δ15N值,结果表明三七与伪品δ13C值有显著差异(P<0.05).通过测定三七、三七伪品中δ13C值这一关键鉴别因子,结合δ15N值,可将三七与这几类伪品分开;对随机购买的三七粉样品的真伪鉴别结果表明,稳定同位素质谱技术能有效鉴别三七真伪,可用于对市售三七类中药材的真伪鉴别,以期为三七类制品的质量安全提供技术支撑.
Abstract
To explore the feasibility of using IRMS for the authenticity identification of Panax notoginseng,the characteristics of stable isotopes of carbon and nitrogen of Panax notoginseng and its counterfeits(Curcuma zedoaria, Curcuma longa, Chrysanthemum leaf Sanqi, Bamboo-like Dendrobium, Water Sanqi, Sedum Sanqi) were analyzed. A element analysis-isotope ratio mass spectrometry method was established to measure the isotope ratios of δ13C and δ15N in Panax notoginseng and its counterfeits. Variance analysis showed significant differences in the stable isotope δ13C values between Panax notoginseng and its counterfeits (P<0.05). Cluster analysis indicated that the determination of δ13C,combined with δ15N,could separate Panax notoginseng from the counterfeits. The isotope ratio mass spectrometry method, by measuring and identification the Panax notoginseng power purchased at random,could effectively identify the authenticity of Panax notoginseng.The method developed in this study can be used to trace the truth of Panax notoginseng products,which will provide technical support for ensuring food safety.
关键词
三七/碳氮稳定同位素/同位素质谱技术/真伪判别Key words
Panax notoginseng/Stable isotopes of carbon and nitrogen/Isotope mass spectrometry/True and false identification引用本文复制引用
基金项目
拱北海关科技计划项目(2021GK012)
海关总署科技计划项目(2022Hk032)
珠海市科技计划项目(2220004000352)
拱北海关科技计划项目(2023GK013)
出版年
2024
NETL
NSTL
万方数据