高吞吐量方法用于确定食用油中的α,β不和化物:紫外线分析
Xuejing Liu1, Zhaojun Zheng1, Yuanfa Liu1
1State Key Laboratory of Food Science and Resources, School of Food Science and Technology, National Engineering Research Center for Functional Food, National Engineering Research Center of Cereal Fermentation and Food Biomanufacturing, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Road, Wuxi, Jiangsu 214122, People's Republic of China.
Food research international (Ottawa, Ont.)
|February 18, 2026
概括
使用2,4-二甲基 (2,4-DMP) 衍生和紫外线分析的新方法准确地检测食用油中的不和化物. 与现有技术相比,这种方法提供了更快,更安全,更有效的石油质量评估.
科学领域:
- 分析化学 分析化学
- 食品化学 食品化学
- 频谱学是一种光谱学.
背景情况:
- α,β-不和化物 (α,β-UAs) 是食用油质量和氧化状态的关键指标.
- 准确有效的α,β-UA检测方法对于食品安全和质量控制至关重要.
研究的目的:
- 开发和验证一种新,快速和灵敏的方法,用于量化食用油中的α,β-单不和化物 (α,β-MUAs) 和α,β-不和化物 (α,β-DUAs).
- 将拟议的方法与已建立的技术比较,例如p-anisidine值 (p-AV) 和高性能液态染色学 (HPLC).
主要方法:
- 使用的2,4-二甲基 Pyrrole (2,4-DMP) 用于α,β-UAs的衍生.
- 采用UV-VIS光谱光度计进行定量分析,确定α,β-MUAs的最佳检测波长为580nm,α,β-DUAs的最佳检测波长为680nm.
- 通过福井函数和1H NMR确认了反应机制,将酶胺确定为最终产品.
主要成果:
- 对于α,β-MUAs和α,β-DUAs,通过低检测极限 (LOD) 和定量极限 (LOQ) 实现了出色的灵敏度.
- 与p-AV和HPLC方法相比,显著缩短衍生时间和简化操作程序.
- 该方法表现出高吞吐量潜力和较低的毒性,使其成为一个实用的替代方案.
结论:
- 拟议的2,4-DMP衍生法,随后进行紫外线分析,是一种高效,敏感和快速的方法,用于确定食用油中的α,β-UA.
- 这种新的技术比传统方法具有显著的优势,提高了监测石油质量和安全的能力.
- 该方法为食品工业提供了一种有价值的工具,以确保食用油产品的完整性和安全性.
相关概念视频
IR and UV–Vis Spectroscopy of Aldehydes and Ketones
7.5K
Infrared spectroscopy, also known as vibrational spectroscopy, is mainly used to determine the types of bonds and functional groups in molecules. In aldehydes and ketones, the carbonyl (C=O) bond shows an absorption around 1710 cm-1. The C=O bond vibration of an aldehyde occurs at lower frequencies than that of a ketone. In addition to the C=O absorption in an aldehyde, the aldehydic C–H bond also gives two peaks in the 2700–2800 cm-1 range. This absorption, coupled with the...
7.5K
Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview
7.1K
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...
7.1K
IR and UV–Vis Spectroscopy of Carboxylic Acids
5.9K
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,...
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,...
5.9K


