相关实验视频

Updated: May 7, 2026

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

A Filter-based Surface Enhanced Raman Spectroscopic Assay for Rapid Detection of Chemical Contaminants

Published on: February 19, 2016

基于富里埃变换红外光谱法,在富含的开谷中检测出的绿色和快速定量检测

Menghui Li¹, Dan Shi¹, Yifan Cheng²

¹College of Food Science and Engineering, Northwest A&F University, YangLing 712100, Shaanxi, China.

|November 16, 2024

概括

现在可以使用福里埃变换红外光谱学和机器学习快速监测开谷中的总和有机. 这种方法使得食品开发和微生物查的快速,绿色检测成为可能.

科学领域:

分析化学分析化学
食品科学食品科学食品科学
生物技术是生物技术.

背景情况:

精确的含量监测对于丰富食品和微生物分析至关重要.
现有的检测方法可能耗时且资源密集.

研究的目的:

开发一种快速,绿色和准确的方法,用于量化丰富开谷中的总和有机.
为了比较不同机器学习算法的性能,用于预测.

主要方法:

利用减弱总反射里埃变换红外光谱 (ATR-FTIR) 来从富含的开菲尔谷物中获得光谱数据.
采用四变量选方法与三种机器学习算法相结合 (包括竞争性自适应重量重新抽样 - 最小方程支持矢量机和IRF-LSSVM).
使用预测设置相对系数 (R_P) 和相对预测偏差 (RPD) 验证模型性能.

主要成果:

竞争性自适应重量化采样 - 最小方形支持向量机模型实现了总预测的最佳性能 (R_P = 0.97, RPD = 4.36).
该IRF-LSSVM模型在有机预测方面表现出色 (R_P = 0.95,RPD = 6.44).
开发的方法允许快速 (在1分钟内) 检测含量,总含量为237.72-2330.82μg/g,有机含量为102.20-1483.59μg/g.

结论:

与机器学习相结合的ATR-FTIR提供了一个可行的解决方案,用于快速和绿色的含量分析.
这种技术支持有效的微生物查和丰富食品的开发.
经过验证的模型为总和有机提供了准确的定量预测.

关键词:

里叶变换的红外线变换凯菲尔谷物凯菲尔谷物有机是一种有机.定量预测可以预测数量.总的总量是多少

更多相关视频

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Highly Sensitive and Rapid Fluorescence Detection with a Portable FRET Analyzer

Published on: October 1, 2016

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy

Biological Samples Preparation for Speciation at Cryogenic Temperature using High-Resolution X-Ray Absorption Spectroscopy

Published on: May 27, 2022

相关概念视频

Infrared (IR) Spectroscopy: Overview

Infrared (IR) Spectroscopy: Overview

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.
Different compounds display unique properties due to their...

IR Spectrometers

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...