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Safety evaluation of aflatoxin B 1 in peanut oil after ultraviolet irradiation detoxification in a photodegradation reactor
Author(s) -
Diao Enjie,
Shen Xiangzhen,
Zhang Zheng,
Ji Ning,
Ma Wenwen,
Dong Haizhou
Publication year - 2015
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.12648
Subject(s) - photodegradation , peanut oil , aflatoxin , food science , chemistry , irradiation , nuclear chemistry , biochemistry , organic chemistry , photocatalysis , raw material , catalysis , physics , nuclear physics
Summary The high incidence of aflatoxin B 1 ( AFB 1 ) in peanut oil has caused wide public concern in the world. Many studies have verified that ultraviolet ( UV ) irradiation can degrade AFB 1 in foods. A new photodegradation reactor has been developed to study the photodegradation efficiency of AFB 1 in peanut oil, and the safety of peanut oil was evaluated after UV irradiation detoxification based on the mutagenicity of Salmonella typhimurium tester strains and cytotoxicity of HepG2 cells. The results showed that AFB 1 in peanut oil could be decomposed efficiently using the photodegradation reactor. AFB 1 was decreased from 51.96 ± 4.24 to 7.23 ± 0.59 μg kg −1 in 10 min and reduced by 86.08% compared with that of the negative control. The residual AFB 1 in peanut oil was far less than the limit level set by Chinese government (20 μg kg −1 ). The Ames test and cell viability assay revealed that 10 min of UV irradiation reduced significantly the toxicity of AFB 1 in peanut oil. All the results suggest that the deleterious effects of AFB 1 can be highly reduced by UV irradiation in the photodegradation reactor, and the reactor can be applied in a large scale in detoxification of AFB 1 in peanut oil in the oil industry.