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Research articles

ScienceAsia 46 (2020):ID 602-610 |doi: 10.2306/scienceasia1513-1874.2020.072


Ultraviolet-LED irradiation effectively detoxified aflatoxin B1 in groundnut oils


Haibo Wanga, Changbao Lib,c,*, Ming Xinb,c, Hock Eng Khoob,d, Zimei Moa, Songyu Zhoua, Xiangdong Daia, Xiaocong Chena, Yiqing Nonga, Juan-mei Zhenga

 
ABSTRACT:     This study aimed to evaluate the quality of aflatoxin B1-detoxified unrefined groundnut oils. Detoxification of aflatoxin B1 (AFB1) in unrefined groundnut oils was performed by ultraviolet light-emitting diodes (UV-LED) irradiation. Ten samples of unrefined groundnut oils were subjected to UV-LED treatment before the measurements of AFB1 content, fatty acid compositions and chemical properties. The 20-min treatment reduced AFB1 content by 99%. Both acid and peroxide values of the oil samples showed little changes after the samples were treated with UV-LED irradiation. GC-MS results showed that 21 types of fatty acid were detected in the untreated oil samples. Minor changes in the levels of fatty acid were also observed after the 20-min treatment. The results proved that UV-LED irradiation effectively reduced AFB1 content in the unrefined groundnut oils and maintained the oil quality. It is a promising strategy for detoxification of AFB1 in groundnut oil.

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a Guangxi-ASEAN Food Inspection and Testing Center, Nanning 530021 China
b Agro-Food Science and Technology Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007 China
c Guangxi Key Laboratory of Fruits and Vegetables Storage-processing Technology, Nanning 530007 China
d Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Selangor, Malaysia

* Corresponding author, E-mail: changbaoli@gxaas.net

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Received 17 Feb 2020, Accepted 8 Aug 2020