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Updated: Jun 16, 2025

PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis
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PTR-ToF-MS Coupled with an Automated Sampling System and Tailored Data Analysis for Food Studies: Bioprocess Monitoring, Screening and Nose-space Analysis

Published on: May 11, 2017

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类似性识别方法用于识别使用稳定同位素和氨基酸配置文件的零添加MSG大豆

Chunlin Li1, Meiling Sheng2, Menglin Zhang3

  • 1State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences; Key Laboratory of Information Traceability for Agricultural Products, Ministry of Agriculture and Rural Affairs of China, Hangzhou 310021, China.

Food chemistry
|August 20, 2024
PubMed
概括

验证大豆声称对食品安全至关重要. 这项研究使用同位素和氨基酸来检测欺诈性的"零添加单谷氨酸 (MSG) "标签,确保消费者保护.

关键词:
氨基酸是氨基酸的组成部分.真实性 真实性 真实性碳同位素是碳的同位素之一.这是欺诈性的标签.单谷氨酸盐是一种固醇.同位素是的同位素之一.类似性方法的相似性方法.豆 豆 豆是一种

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Species Determination and Quantitation in Mixtures Using MRM Mass Spectrometry of Peptides Applied to Meat Authentication09:26

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Most elements exist in nature as a mixture of isotopes. The isotopes differ in weight due to their respective number of neutrons. The molecular weight of a molecule is different depending on the specific isotope of its elements involved. As a result, the mass spectrum of the molecule exhibits peaks from the same fragment at multiple positions. The positions of these mass signals depend on the difference between the molecular mass. Furthermore, the intensity of these signals is dependent on the...
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An unknown compound can be established by identifying the molecular ion peak in the mass spectrum. The molecular ion peak is often weak or absent due to the predominance of fragmentation in high-energy electron beams. In such cases, a low-energy electron beam can be used to scan the spectrum to enhance the intensity of the molecular ion peak. Additionally, chemical ionization, field ionization, and desorption ionization spectra are used to obtain a relatively intense molecular ion peak.
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