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| Effects of four aflatoxin adsorbents on the comprehensive quality of peanut oil |
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| DOI： |
| KeyWord:aflatoxin activated clay bentonite modified montmorillonite peanut oil comprehensive quality |
| FundProject: |
| Author Name | Affiliation | | JIANG Deming1, LIU Xiaomeng1, ZOU Qiulong1, YIN Tie1, ZHANG Xiaolin1, ZHANG Gang2, LIU Peilian2 | 1.Nutrition & Health Research Institute, COFCO Corporation, Beijing 102209, China
2.COFCO Oil and Grains Industry (Feixian) Co. , Ltd. , Linyi 273499, Shandong, China |
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| Abstract: |
| Aflatoxin is one of the important factors affecting the safety of peanut oil. In order to optimize process of aflatoxin adsorption, the adsorption effect of four adsorbents(activated clay, bentonite, modified montmorillonite A and modified montmorillonite B) on aflatoxin B1(AFB1) in crude peanut oil and the influence on the comprehensive quality of peanut oil were studied from the aspects of adsorbent addition amount, adsorption time, adsorption temperature and AFB1 pollution level, respectively. The results showed that when the adsorbent addition amount was 0.1%-1.0%, the adsorption rates of the four adsorbents for AFB1 increased with the increase of the addition amount and then the adsorption rates maintained the dynamic balance. When the adsorption time ranged from 20 min to 60 min and the adsorption temperature ranged from 45℃ to 115℃, the adsorption rate of the four adsorbents promoted with the increasing of adsorption time and adsorption temperature. While the pollution level of AFB1 in crude peanut oil had no obvious effect on the adsorption rate. The pollutants (total arsenic and lead) were not detected, and fatty acid composition(oleic acid and linoleic acid content) had no significant change after the crude peanut oil treated with four adsorbents. Moreover, the acid value, peroxide value, vitamin E content, squalene content and sterol content showed little change. All of the four adsorbents adsorbed the flavor substances in the oil, among which the activated clay adsorbed the most and retained only 30.6% of the flavor substances, while the modified montmorillonite B adsorbed the least and retained 89.5% of the flavor substances. In conclusion, the modified montmorillonite B can not only adsorb AFB1 efficiently, but also has little impact on the comprehensive quality of peanut oil, which is safe and reliable, so it is suitable for popularization and application in oil industry. |
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