紫外发光二极管冷光辐照降解花生油中黄曲霉毒素 B1 及其降解产物结构解析。
Degradation of Aflatoxin B1 in Peanut Oil by Ultraviolet-LED Cold-Light Irradiation and Structure Elucidation of the Degradation Products.
机构信息
Guangxi-ASEAN Food Inspection Center.
College of Chemistry and Bioengineering, Guilin University of Technology.
出版信息
J Oleo Sci. 2023 Mar 30;72(4):473-480. doi: 10.5650/jos.ess22354. Epub 2023 Mar 10.
This study aimed to determine the efficiency of ultraviolet (UV)-LED cold light treatment on the degradation of aflatoxin (AF)B1 in peanut oils. The peanut oil samples obtained from different places in China and abroad were determined for AFB1 degradation efficiency of the UV-LED cold-light irradiation method. The degradation products were analyzed by ultra-high performance liquid chromatography coupled to quadrupole orbitrap high-resolution mass spectrometry (UPLC-Q-Exactive MS). The results indicated that the AFB1 content in all peanut oil samples decreased rapidly after 5 min of irradiation. Four main photodegradation products (CHO, CHO, CHO, and CHO) were identified using the established LC-MS method. Their chemical structures were postulated based on the LC-MS data. Also, the degradation pathways were proposed based on the data obtained. Oxidation and reduction reactions were mainly responsible for AFB1-decomposition. The reactions occurred at the furan and lactone rings. These findings demonstrated that UV-LED cold-light irradiation was an effective method for treating AFB1- contaminated peanut oil.
本研究旨在确定紫外（UV）-LED 冷光处理对花生油中黄曲霉毒素（AF）B1 降解的效率。测定了来自中国和国外不同地区的花生油样品中 UV-LED 冷光照射法对 AFB1 降解的效率。采用超高效液相色谱-四级杆轨道阱高分辨质谱法（UPLC-Q-Exactive MS）对降解产物进行分析。结果表明，所有花生油样品在照射 5 分钟后，AFB1 的含量迅速下降。利用建立的 LC-MS 方法鉴定了四个主要的光降解产物（CHO、CHO、CHO 和 CHO）。根据 LC-MS 数据推测了它们的化学结构。并根据所得数据提出了降解途径。氧化和还原反应是 AFB1 分解的主要原因。反应发生在呋喃和内酯环上。这些发现表明，UV-LED 冷光照射是处理 AFB1 污染花生油的有效方法。
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