Adsorptive removal of aflatoxin B1 from contaminated peanut oil via magnetic porous biochar from soybean dreg. (30th May 2023)

• Record Type: Journal Article
• Authors: Ying, Zhiwei; Zhang, Tianyu; Li, He; Liu, Xinqi
• Is Part Of: Food chemistry. Volume 409(2023)
• Publication Date: 2023-05-30
• Subjects: Magnetic adsorbent -- Synthesis -- Characterization -- Adsorption behavior -- Quality of peanut oil; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.135321
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: The magnetic adsorbent was prepared from soybean dreg via the co-precipitation. The magnetic adsorbent could be separated easily by using an external magnetic field. 0.45SDB-6-K-9@Fe3 O4 showed a good adsorption capacity of 0.1354 mg/g for AFB1. The magnetic adsorbent had little impact on the nutritional components of peanut oil. The removal of AFB1 from peanut oil by SDB-6-K-9@Fe3 O4 was a feasible method. Abstract: The contamination of mycotoxin in edible oil has always been a major threat to human health. In this study, magnetic soybean dreg-based biochar SDB-6-K-9@Fe3 O4 was prepared via co-precipitation and used to remove aflatoxin B1 (AFB1) from contaminated oil. The adsorbent characterization results revealed that the Fe3 O4 was successfully loaded to the SDB-6-K-9. The 0.45SDB-6-K-9@Fe3 O4 had paramagnetic properties with a saturation magnetization of 45.15 emu/g, which could be quickly separated from the peanut oil using an external magnet. The maximum adsorption capacity of peanut oil contaminated with 200 ng/mL AFB1 by 50 mg 0.45SDB-6-K-9@Fe3 O4 for 2 h reached 0.1354 mg/g, while the removal process minimally affected the quality of the oil. The adsorption behavior results followed a pseudo-second-order kinetic and fitted well with the Freundlich model. The excellent adsorption removal efficiency and facile magnetic separation of the adsorbents provide a simple and efficient method for removing contaminants from the oil.