一种基于二维相关性光谱分析的方法,用于在储存的土豆中检测无症状腐烂,使用超光谱成像
Fan Zhang1, Wenxiu Wang1, Qianyun Ma1
1College of Food Science and Technology, Hebei Agricultural University, 289th Lingyusi Street, Lianchi District, Baoding 071000, China.
Food chemistry: X
|July 15, 2024
概括
超光谱成像 (HSI) 有效地监测储存的土豆中的Fusarium干腐 (FDR). 这项技术绘制了腐烂进展和组件变化的地图,有助于疾病管理和质量评估.
科学领域:
- 农业科学 农业科学
- 植物病理学 植物病理学
- 频谱学是一种光谱学.
背景情况:
- 菌体干 (Fusarium dry rot,FDR) 显著影响土豆的储存质量和产量.
- 精确监测FDR进展对于有效的疾病管理至关重要.
研究的目的:
- 利用高光谱成像 (HSI) 识别化阶段并监测存储的土豆中的FDR进展.
- 在土豆感染期间评估易感性参数和质量属性.
主要方法:
- 使用超光谱成像 (HSI) 系统,从受感染的土豆样本中获取光谱数据.
- 两维相关谱 (2D-COS) 用于分析光谱数据和映射组件变化.
- 基于二维相关联同步光谱的定量分析模型被开发出来.
主要成果:
- 这项研究确定了20个与粉,可溶性蛋白质,氨酸和有氧细菌含量相关的光谱峰值.
- 定量分析模型显示出高准确度,最佳验证的相关系数从0.9273到0.9634.
- 对超光谱图像的视觉分析有效地显示了这些指标组件的分布.
结论:
- HSI是一种可行的工具,用于非破坏性监测Fusarium干腐烂的进展以及储存的土豆中的相关生化变化.
- 开发的定量模型允许在疾病发展过程中准确评估关键质量指标.
- 这种方法支持改善疾病管理策略和马储存的质量控制.
相关概念视频
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
681
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
681
2D NMR: Homonuclear Correlation Spectroscopy (COSY)
1.0K
Homonuclear correlation spectroscopy, or COSY, is a 2-dimensional NMR technique that provides information about coupled protons. Typically, the geminal and vicinal coupling are observed. For example, consider the COSY spectrum of ethyl acetate, where its 1D proton NMR spectrum is plotted along the vertical and horizontal axes with their corresponding chemical shift scale. Three spots on the diagonal corresponding to the three peaks in the 1D proton spectrum are called diagonal peaks. The COSY...
1.0K
2D NMR: Overview of Homonuclear Correlation Techniques
184
Homonuclear correlation spectroscopy (COSY) is a powerful technique used in Nuclear Magnetic Resonance (NMR) spectroscopy to study the correlations between nuclei of the same type within a molecule. It provides information about scalar couplings between adjacent nuclei, which helps determine connectivity and structural information. There are several COSY variants, each with its unique strengths and experimental parameters.
COSY90 is the standard two-dimensional (2D) COSY experiment that...
COSY90 is the standard two-dimensional (2D) COSY experiment that...
184


