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相关概念视频

Qualitative Analysis01:10

Qualitative Analysis

261
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:...
261
Applications of IR Spectroscopy: Overview01:11

Applications of IR Spectroscopy: Overview

701
The non-destructive nature and ability to provide valuable chemical information make IR spectroscopy a versatile technique with broad applications in various scientific and industrial fields. IR spectroscopy is commonly used to identify and characterize organic and inorganic compounds. It provides information about the functional groups present in a molecule and the bonding between atoms. This helps in the structural elucidation of compounds during organic synthesis, pharmaceutical research,...
701
Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

219
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
219
Sampling Methods: Overview01:06

Sampling Methods: Overview

319
A sample refers to a smaller subset representative of a larger population. In analytical chemistry, studying or analyzing an entire population is often impractical or impossible. Therefore, samples are used to draw inferences and generalize the whole population. The sampling method selects individuals or items from a population to create a sample. Standard sampling methods include random, judgemental, systematic, stratified, and cluster sampling. 
In analytical chemistry, the choice of...
319
Development of Analytical Methods01:21

Development of Analytical Methods

430
An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
430
Mass Spectrometry: Alcohol Fragmentation01:03

Mass Spectrometry: Alcohol Fragmentation

3.5K
Alcohols (R-OH) ionize to lose one non-bonded electron from the oxygen atom, forming molecular ions. Due to their tendency to fragment rapidly, the intensity of the molecular ion peak in the mass spectrum is weak or sometimes absent. The fragmentation patterns for alcohols occur in two ways, i.e. ⍺-cleavage and dehydration. During ⍺-cleavage, the bond at the ⍺-position adjacent to the hydroxyl group cleaves to give a resonance-stabilized cation and a radical. However,...
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相关实验视频

Updated: Jul 4, 2025

The Terroir Concept Interpreted through Grape Berry Metabolomics and Transcriptomics
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研讨会介绍:葡萄酒分析科学的最新进展和当前挑战.

Fulvio Mattivi1, Elizabeth J Waters2, Ulrich Fischer3

  • 1Unit of Metabolomics, Research and Innovation Centre, Fondazione Edmund Mach, via E. Mach 1, 38098 San Michele all'Adige, Italy.

Journal of agricultural and food chemistry
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概括
此摘要是机器生成的。

这项研究突出了酒学的科学复杂性,强调了严格的化学和感官分析,以获得优质葡萄酒的质量. 在葡萄酒分析科学2022年会议召开全球专家,以推进葡萄酒和烈酒研究.

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科学领域:

  • 葡萄酒学和分析化学
  • 食品科学与技术 食品科学与技术
  • 葡萄种植和葡萄酒学

背景情况:

  • 葡萄酒和烈酒的复杂性超出了社会层面,源于各种各样的手工生产方法,葡萄品种和全球分布.
  • 优质葡萄酒是一种非商品产品,需要在工艺和产品开发方面进行严格的科学验证.
  • 多学科科学专业知识对于推动葡萄酒和烈酒的持续改进和国际市场评估至关重要.

研究的目的:

  • 为了展示第12届In Vino Analytica Scientia 2022会议的研究收藏.
  • 在酒学中展示化学和感官分析的进步.
  • 促进葡萄酒和烈酒分析研究人员之间的知识共享和协调.

主要方法:

  • 从口头演讲和海报中收集和出版精选的完整论文.
  • 在2022年"In Vino Analytica Scientia"会议上提出的研究分析.
  • 综合葡萄酒和烈酒研究中的多学科发现.

主要成果:

  • 在葡萄酒分析科学2022年会议聚集了240多名国际代表.
  • 提出的研究涵盖了葡萄酒和烈酒分析的各个方面,包括9个主题讲座,37个演讲,36个简短的沟通,以及200多张海报.
  • 本特别期刊包括精选的贡献,反映了当前研究的广度.

结论:

  • 严格的化学和感官分析对于理解和改善葡萄酒和烈酒质量至关重要.
  • 在葡萄酒分析科学会议作为全球合作和知识交换在酒的重要平台.
  • 持续的多学科研究对于支持全球优质葡萄酒和烈酒的创新和质量至关重要.