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Updated: Jul 6, 2026

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使用便携式基于LED的光光谱和化学分析来验证Gayo Arabica绿色咖啡豆与不同桃加工方法的真实性

Meinilwita Yulia1,2, Analianasari Analianasari1, Slamet Widodo3

  • 1Department of Agricultural Technology, Lampung State Polytechnic, Jl. Soekarno Hatta No. 10, Rajabasa, Bandar Lampung 35141, Indonesia.

Foods (Basel, Switzerland)
|January 17, 2024
PubMed
概括

便携式光光谱仪可以根据加工方法准确地区分Gayo arabica咖啡豆. 这种成本效益高的技术,使用LED激发,在分类蜂蜜工艺 (HP),葡萄酒工艺 (WP) 和天然工艺 (NP) 豆类方面实现了超过96%的准确性.

关键词:
在 LDA LDA 中.基于LED的光光谱学在PCA中,PCA是PCA.这就是PCA-LDA.在PLS-DA中.桃加工方法 桃加工方法单一来源的咖啡咖啡

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Spectrophotometry is the quantitative measurement of the absorption, reflection, diffraction, or transmission of electromagnetic radiation through a material as a function of the intensity and wavelength of the radiation. A spectrophotometer is a device used to measure the change in the radiation intensity caused by its interaction with the material.
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
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IR and UV–Vis Spectroscopy of Carboxylic Acids

In IR spectroscopy of carboxylic acids, the C=O bond shows a characteristic band between 1710 and 1760 cm⁻¹, and the O–H bond exhibits a broad band between 2500 and 3300 cm⁻¹.
However, the stretching absorptions for the C=O bond vary depending on the structure of carboxylic acids. The C=O bond of the free carboxylic acids shows a higher stretching frequency, 1760 cm−1, while H-bonded carboxylic acids (dimers) exhibit stretching absorptions at a lower frequency, 1710 cm−1. The C=O bond of the...
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Chromatography is an analytical technique widely used in fields such as chemistry, biology, environmental science, and pharmaceuticals to separate the components of a mixture and identify substances between them. The process of chromatography is based on the interactions between two distinct phases: the stationary phase and the mobile phase. The stationary phase is fixed in place by a supporting material, while the mobile phase moves over it, carrying the solutes. As the mobile phase travels,...
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Chromatographic techniques are classified in three ways: the classification is based on the physical state of the stationary and mobile phases, how the mobile phase and the stationary phase contact each other, or through the chemical or physical processes that isolate the components of the sample. Typically, the mobile phase is either a liquid or gas, while the stationary phase is either a solid or a liquid layer applied to a solid surface.
Chromatographic techniques are typically named by...