相关实验视频

Updated: Jun 27, 2025

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling
05:22

Rapid Collection of Floral Fragrance Volatiles using a Headspace Volatile Collection Technique for GC-MS Thermal Desorption Sampling

Published on: December 10, 2019

6.9K

通过极度梯度提取方法和化学测量模式识别方法对功能香味的配方分析

Meijin Wang1, Wanru Wang1, Xiaohua Zhang1

  • 1Department of Chemistry and Chemical Engineering, Hunan Institute of Science and Technology, Yueyang, China.

Talanta
|April 30, 2024
PubMed
概括

这项研究使用极度梯度提取 (PGE) 和化学测量来分析天然风味,使功能性香料配方的准确可追溯性成为可能. 这种方法为风味分析和产品认证提供了指导.

关键词:
化学测量 化学测量 化学测量功能性香水配方 功能性香水配方在GC-MS中使用GC-MS.自然的风味,自然的味道.极地梯度提取 极地梯度提取

更多相关视频

Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique04:36

Author Spotlight: Exploring Tea Aroma Using Solvent-Assisted Flavor Evaporation Technique

Published on: May 26, 2023

3.2K
Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography10:14

Chromatographic Fingerprinting by Template Matching for Data Collected by Comprehensive Two-Dimensional Gas Chromatography

Published on: September 2, 2020

5.0K

相关概念视频

Qualitative Analysis01:10

Qualitative Analysis

Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
247
Mass Spectrum: Interpretation01:24

Mass Spectrum: Interpretation

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.
To...
1.2K
Analyte Adsorption and Distribution01:09

Analyte Adsorption and Distribution

In certain chromatographic separations, solutes transfer between the mobile phase and the stationary phase via sorption, which typically refers to the process of adsorption. For many chromatographic systems, the sorption process often depends on the polarity of the compounds—an expression of the overall dipole moment within the molecule. During the separation process, there is competition between the solute and solvent for adsorption to the stationary phase. Highly polar compounds and...
644
Thin-Layer Chromatography (TLC): Overview01:11

Thin-Layer Chromatography (TLC): Overview

Thin-layer chromatography (TLC) is a chromatography technique that separates compounds based on their polarity. TLC typically uses polar silica gel, a form of silicon dioxide, as the stationary phase. The silica gel contains hydroxyl (OH) groups on its surface, which form hydrogen bonds with polar compounds, influencing their adhesion to the stationary phase.
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
1.5K