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Degradation of ochratoxin A in aqueous solutions by electron beam irradiation

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Abstract

The electron beam (EB) irradiation-induced degradation of ochratoxin A (OTA) was investigated in this study. Results showed that EB irradiation is much more effective in degrading OTA in water than that in acetonitrile and methanol–water (60:40, v/v). OTA degradation efficiency increased in an irradiation dose-dependent manner and decreased in the increasing of substrate concentration. The alkaline conditions (pH 9.99) and the addition of H2O2 (<0.1 % v/v) remarkably improved the OTA degradation efficiency. OTA degradation process agreed well with the pseudo first-order kinetic model. Furthermore, the degradation products were preliminary analyzed using liquid chromatography–mass spectrometry.

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Acknowledgments

This work was financially supported by National Science and Technology Foundation of China (Foundation item No. 2012BAD29B03) and The Team Project of Beijing Vocational College of Agriculture.

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Authors and Affiliations

  1. Department of Food and Biological Engineering, Beijing Vocational College of Agriculture, Beijing, 102442, China

    Chunhong Peng, Li Wang, Changgang Wang & Shurong Li

  2. Institute of Agro-food Science and Technology, Chinese Academy of Agricultural Sciences/Key Opening Laboratory of Agricultural Products Processing and Quality Control, Ministry of Agriculture, Beijing, 100193, China

    Chunhong Peng, Yang Ding, Shuying Li, Ying Nie, Linyan Zhou & Yaru Li

  3. College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, 350000, Fujian, China

    Chunhong Peng & Fengping An

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  1. Chunhong Peng
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  2. Yang Ding
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  4. Li Wang
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  5. Shuying Li
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  10. Shurong Li
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Correspondence to Shurong Li.

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Peng, C., Ding, Y., An, F. et al. Degradation of ochratoxin A in aqueous solutions by electron beam irradiation. J Radioanal Nucl Chem 306, 39–46 (2015). https://doi.org/10.1007/s10967-015-4086-5

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  • DOI: https://doi.org/10.1007/s10967-015-4086-5

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