在花生粉中作为料原料的过度标准中,对阿弗拉托克辛B的Vis-NIR光谱分辨分析1
Yongqi Huang1, Hao Liu2, Xizhe Lu2
1Department of Biological Engineering, Jinan University, Huangpu Road West 601, Tianhe District, Guangzhou 510632, China.
概括
一种新的可见和近红外 (Vis-NIR) 光谱法有效地检测了料中的阿弗拉托辛B1 (AFB1). 部分最小平方区分分析 (PLS-DA) 模型实现了91.9%的准确性,为食品安全提供了快速,无试剂的解决方案.
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 食品科学 食品科学 食品科学
背景情况:
- 非洲毒素B1 (AFB1) 对食品安全和人类健康构成重大风险.
- 快速,无试剂的AFB1检测方法对于有效的监测至关重要.
- 可见和近红外 (Vis-NIR) 光谱学为非破坏性分析提供了潜力.
研究的目的:
- 开发和验证一种快速,简单和无试剂的方法,用于检测花生粉中过度的阿弗拉托克辛B1 (AFB1).
- 将定量分析 (PLS) 与模式识别 (PLS-DA) 对AFB1歧视进行比较.
- 优化光谱预处理和波长选择,以提高检测准确度.
主要方法:
- 可见和近红外光谱 (Vis-NIR) 用于在花生粉中对AFB1进行歧视性分析.
- 建立了两个模型:用于定量分析的部分最小平方 (PLS) 和用于模式识别的部分最小平方-歧视分析 (PLS-DA).
- 频谱预处理涉及诺里斯衍生过 (NDF) 的多参数优化,波长优化使用等距离组合波长逐步淘汰 (EC-WSP) 方法.
主要成果:
- 与PLS模型 (RAR_V = 79.8%) 相比,PLS-DA模型实现了更高的验证准确率 (RAR_V = 91.9%).
- PLS-DA模型显著将有效波长的数量减少到17个,主要是在NIR外调区域.
- 在EC-WSP-PLS-DA模型中,AFB1在料原料中的过度标准表现出了更高的歧视效应.
结论:
- 可见和近红外 (Vis-NIR) 光谱学,特别是与EC-WSP-PLS-DA模型相结合时,是一种可行的和有效的方法,用于区分在料中的AFB1过度标准.
- 这种方法为确保食品和料安全提供了一个快速,无试剂的替代方案.
- 优化的光谱分析显著提高了AFB1检测的准确性和效率.
更多相关视频
09:44RNAi-mediated Control of Aflatoxins in Peanut: Method to Analyze Mycotoxin Production and Transgene Expression in the Peanut/Aspergillus Pathosystem
Published on: December 21, 2015
21.0K
10:01Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
Published on: April 23, 2012
18.1K
相关概念视频
¹H NMR Signal Integration: Overview
1.4K
The intensity of a signal, which can be represented by the area under the peak, depends on the number of protons contributing to that signal. The area under each peak is shown as a vertical line called an integral, with the integral value listed under it, as seen in the proton NMR spectrum of benzyl acetate. Each integral value is divided by the smallest integral value to obtain the ratio of the number of protons producing each signal. The ratio reveals the relative number of protons and not...
1.4K
Atomic Absorption Spectroscopy: Lab
348
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
348
