商业化基的气味指纹和来源识别商业化基:HS-GC-IMS,多变量统计分析和追踪路径研究
Jin-Shuang Guo1,2, Gang Lu3, Fu-Lai Song4
1Characteristic Laboratory of Forensic Science in Universities of Shandong Province, Shandong University of Political Science and Law, Jinan 250014, China.
Polymers
|July 13, 2024
概括
这项研究使用先进的染色学识别了来自海洋和真菌来源的奇多中独特的挥发性有机化合物 (VOC). 这种新的气味指纹识别方法允许准确识别来源,并确保生物安全.
科学领域:
- 生物化学 生物化学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 基是一种生物聚合物,由基衍生,来源于海洋动物和真菌.
- 准确的基托来源识别对于质量控制和安全应用至关重要.
- 现有的基托表征方法可能无法完全捕捉出源特定的细微差别.
研究的目的:
- 开发一种新的方法,使用其挥发性有机化合物 (VOC) 档案来识别基托桑的来源.
- 描述来自海洋 (,) 和真菌 (Agaricus bisporus,Aspergillus niger) 来源的奇托的气味组成.
- 建立一个强大的分析模型,以区分海洋和真菌.
主要方法:
- 从海洋和真菌来源提取酸盐.
- 使用富里埃变换红外光谱法 (FT-IR) 进行分子结构分析.
- 通过头空间气体染色学-离子运动谱学 (HS-GC-IMS) 进行气味成分分析.
- 统计分析包括主要组件分析 (PCA) 和直角部分最小平方差异分析 (OPLS-DA).
主要成果:
- 确定了220种挥发性有机化合物 (VOC) 作为奇托的特征性气味指纹成分.
- PCA有效地根据其VOC档案对奇托桑样品进行分类,解释了87%的差异.
- 一个OPLS-DA模型实现了高精度 (R2X=0.866,R2Y=0.996,Q2=0.989) 来源识别.
- 对于海洋 (29 种 VOC) 和真菌 (20 种 VOC) 基托桑,确定了不同的 VOC 组.
结论:
- 该研究提出了一种基于VOC分析的新型有效方法来识别基托来源.
- 开发的分析方法,利用HS-GC-IMS和OPLS-DA,在区分海洋和真菌奇多方面提供了高准确度.
- 这种技术具有重要的潜力,可以确保商业化酸盐应用中的生物安全性和质量控制.
更多相关视频
10:14Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography
Published on: September 2, 2020
5.0K
07:29HPLC Coupled with Chemical Fingerprinting for Multi-Pattern Recognition for Identifying the Authenticity of Clematidis Armandii Caulis
Published on: November 11, 2022
2.0K
相关概念视频
01:23Mass Spectrum
5.3K
A mass spectrum is the graphical representation of the relative abundance of the charged fragments in an analyte plotted against their mass-to-charge ratio (m/z). The plot's x-axis represents the ratio of the mass of the charged fragment to the number of charges it carries. The y axis of the plot represents the relative abundance of each charged species. The relative abundance is calculated from the signal intensity of each charged species recorded at the detector. The most intense signal (the...
5.3K
01:14Gas Chromatography–Mass Spectrometry (GC–MS)
6.0K
Gas chromatography–mass spectrometry (GC–MS) is the combination of analytical techniques of gas chromatography and mass spectrometry in a single instrument for analyzing a mixture of compounds. The gas chromatograph separates the compounds in the mixture, and the mass spectrometer analyzes each compound separately to determine the molecular masses and molecular structures.
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
A gas chromatograph consists of a long, narrow capillary column with a polysiloxane coating on the inner wall....
6.0K
01:21Mass Spectrometry: Complex Analysis
2.1K
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
2.1K
01:13Gas Chromatography: Introduction
5.0K
Gas chromatography (GC) is a technique for separating and analyzing volatile compounds in a sample. Its primary purpose is to identify and quantify components in complex mixtures, making it essential in fields such as environmental analysis, pharmaceuticals, and petrochemicals. GC is also called vapor-phase chromatography (VPC) or gas-liquid partition chromatography (GLPC).
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
In GC, a sample is vaporized and mixed with an inert carrier gas (the mobile phase), which transports it through a...
5.0K