使用高光谱技术快速检测葡萄中的素含量
Peng Zhang1, Qiang Wu2, Yanhan Wang1
1College of Agriculture, Inner Mongolia Agricultural University, Huhhot 010010, China.
Life (Basel, Switzerland)
|March 28, 2024
概括
准确的葡萄化分析对于生产优质葡萄酒至关重要. 这项研究开发了一种非破坏性光谱方法,结合了支持矢量机和随机森林 (SVM-RF) 模型,以有效预测葡萄中的素含量.
科学领域:
- 葡萄种植和葡萄酒学 葡萄种植和葡萄酒学
- 分析化学 分析化学
- 频谱学是一种光谱学.
背景情况:
- 葡萄酒的品质与品种和环境因素密切相关.
- 葡萄的皮含量是最终葡萄酒质量的关键决定因素.
- 快速,非破坏性的色评估方法对于质量控制至关重要.
研究的目的:
- 开发和验证一种非破坏性方法,用于预测葡萄葡萄中的素含量.
- 评估各种光谱预处理技术和机器学习模型的有效性.
主要方法:
- 从Pinot Noir和Chardonnay葡萄中采集的光谱数据 (500-1800nm) 使用地球物理光谱仪.
- 应用的光谱预处理技术:萨维茨基-戈莱 (SG),第一阶微分 (1D) 和标准正常转换 (SNV).
- 利用部分最小平方 (PLS),支向量机 (SVM),随机森林 (RF) 和1D卷积神经网络 (1DCNN) 模型进行素预测.
主要成果:
- 光谱预处理显著提高了预测模型的性能.
- 组合的支持矢量机器-随机森林 (SVM-RF) 模型表现出卓越的准确性.
- 最优的SVM-RF模型实现了0.78的测试集R2,0.31的RMSE和10.71%的相对误差 (RE).
结论:
- 非破坏性光谱分析与先进的机器学习相结合,为葡萄色评估提供了一种可行的方法.
- 开发的SVM-RF模型为葡萄酒的实时,非破坏性质量评估提供了一个强大的工具.
- 这些发现为推进葡萄种植中的非破坏性测试技术奠定了理论基础.
相关概念视频
UV–Vis Spectroscopy of Conjugated Systems
7.0K
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent...
One of the factors influencing λmax is the extent...
7.0K
Spectrophotometry: Introduction
3.0K
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...
The essential components of a spectrophotometer include a source of electromagnetic radiation, a slot for placing a material to be analyzed, and a...
3.0K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
2.6K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for...
2.6K
Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview
361
Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
The ATR process begins by directing a beam...
361


