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Updated: Jul 1, 2025

O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression
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O-cresol Concentration Online Measurement Based On Near Infrared Spectroscopy Via Partial Least Square Regression

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近红外 (NIR) 光谱作为预测产母便中的n-基度的替代方法:用于估计食成分的NIR生成数据

Laid Dardabou1, José Carlos Martínez Ávila2, Markus Werner Schmidt1

  • 1Institute of Animal Nutrition, Livestock Products, and Nutrition Physiology, University of Natural Resources and Life Sciences, 1190 Vienna, Austria.

Animals : an open access journal from MDPI
|March 13, 2024
PubMed
概括

近红外光谱学 (NIRS) 准确预测产卵排泄物中的n-基,为实验室分析提供更快,更具成本效益的替代方案,以评估自由范围的食贡献.

关键词:
阿尔法萨法 (Alfalfa) 是一种植物.这里是自由放牧区.产卵母的产卵母是什么意思n-烯酸盐的使用方法接近红外光谱学近红外光谱学在户外消费的户外消费.

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Infrared spectroscopy, also known as vibrational spectroscopy, is mainly used to determine the types of bonds and functional groups in molecules. In aldehydes and ketones, the carbonyl (C=O) bond shows an absorption around 1710 cm-1. The C=O bond vibration of an aldehyde occurs at lower frequencies than that of a ketone. In addition to the C=O absorption in an aldehyde, the aldehydic C–H bond also gives two peaks in the 2700–2800 cm-1 range. This absorption, coupled with the...
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Double bonds in alkenes and carbonyl compounds exhibit stretching frequencies in the diagnostic region of the IR spectrum. In addition, alkenes exhibit vinylic C–H stretching and C–H out-of-plane bending absorptions that are useful for identifying substitution patterns.
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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
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