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Updated: May 23, 2026
Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds
Published on: April 19, 2024
Solid-phase adsorptive removal of aflatoxins from aqueous and sunflower oil matrices using bio-MOFs
1Key Laboratory of Novel Food Resources Processing Ministry of Agriculture, Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Jinan 250100, Shandong, China; School of Ecology, Hainan University, Haikou 570228, China.
Abstract:
Aflatoxins, toxic metabolites produced by Aspergillus species, are major contaminants in food and edible oils. This study aimed to develop a bio-inspired adsorbent for aflatoxin removal. A novel bio-inspired, chromium-based metal-organic framework (bMCr) was prepared from a citric acid-glycine-derived linker via hydrothermal reaction with Cr(NO₃)₃·9H₂O. Batch adsorption experiments in aqueous and sunflower-oil media optimized pH, temperature, adsorbent dosage, ionic strength, and contact time. Under optimal conditions, bMCr removed 78-80% of aflatoxin B1/aflatoxin B2 in water within 15 min and 66-70% in sunflower oil within 30 min. The material maintained over 60% and 50% adsorption efficiency in water and oil, respectively, after three cycles. These results demonstrate that bMCr is an eco-friendly and effective adsorbent for aflatoxin removal, with strong potential for industrial applications.
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