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首页> 外文期刊>Molecules >Is Gamma Radiation Suitable to Preserve Phenolic Compounds and to Decontaminate Mycotoxins in Aromatic Plants? A Case-Study with Aloysia citrodora Paláu
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Is Gamma Radiation Suitable to Preserve Phenolic Compounds and to Decontaminate Mycotoxins in Aromatic Plants? A Case-Study with Aloysia citrodora Paláu

机译：伽马射线辐射是否适合保留芳香植物中的酚类化合物并净化霉菌毒素？柑桔Aloysia citrodora的个案研究

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摘要

This study aimed to determine the effect of gamma radiation on the preservation of phenolic compounds and on decontamination of dry herbs in terms of ochratoxin A (OTA) and aflatoxin B1 (AFB1), using Aloysia citrodora Paláu as a case study. For this purpose, artificially contaminated dry leaves were submitted to gamma radiation at different doses (1, 5, and 10 kGy; at dose rate of 1.7 kGy/h). Phenolic compounds were analysed by HPLC-DAD-ESI/MS and mycotoxin levels were determined by HPLC-fluorescence. Eleven phenolic compounds were identified in the samples and despite the apparent degradation of some compounds (namely verbasoside), 1 and 10 kGy doses point to a preservation of the majority of the compounds. The mean mycotoxin reduction varied between 5.3% and 9.6% for OTA and from 4.9% to 5.2% for AFB1. It was not observed a significant effect of the irradiation treatments on mycotoxin levels, and a slight degradation of the phenolic compounds in the irradiated samples was observed.
机译：这项研究的目的是确定γ射线对类毒素A（OTA）和黄曲霉毒素B1（AFB1）的酚类化合物的保存和干草药去污的影响，并以Aloysia citrodoraPaláu为例。为此，将人工污染的干叶以不同剂量（1、5和10 kGy;剂量率为1.7 kGy / h）进行γ辐射。通过HPLC-DAD-ESI / MS分析酚类化合物，并通过HPLC荧光法测定真菌毒素水平。在样品中鉴定出11种酚类化合物，尽管某些化合物（即维巴甙）明显降解，但1和10 kGy剂量仍能保留大多数化合物。 OTA的平均霉菌毒素减少量介于5.3％至9.6％之间，AFB1的平均真菌毒素减少量则介于4.9％至5.2％之间。没有观察到辐照处理对霉菌毒素水平的显着影响，并且未观察到辐照样品中酚类化合物的轻微降解。

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