Removal of aflatoxin B1 from contaminated peanut oils using magnetic attapulgite. (1st March 2021)

• Record Type: Journal Article
• Authors: Ji, Junmin; Xie, Wenlei
• Is Part Of: Food chemistry. Volume 339(2021)
• Publication Date: 2021-03-01
• Subjects: Adsorption -- Aflatoxin B1 -- Magnetic adsorbent -- Attapulgite -- Detoxification; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2020.128072
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: The magnetic mineral composite (Fe3 O4 @ATP) was prepared and tested as an adsorbent. The magnetic adsorbent displayed good abilities to eliminate aflatoxin B1 from oil. The magnetic adsorbent could be separated easily using an external magnetic field. The nutritional components of oil could be largely remained after the detoxification. Abstract: The efficient magnetic adsorbent (Fe3 O4 @ATP) was prepared by precipitation through the dispersion of Fe3 O4 nanoparticles on the natural attapulgite (ATP) and then tested as an adsorbent for aflatoxin B1 (AFB1 ) removal from contaminated oils. The adsorbent characterization results revealed that the Fe3 O4 were incorporated into the ATP, affording the Fe3 O4 @ATP composite. This magnetic composite displayed a good ability to eliminate AFB1 from contaminated oils with a removal efficiency of 86.82% using a 0.3% dosage. The Fe3 O4 @ATP possessed paramagnetic character with a saturation magnetization of 50.86 emu/g, enabling its easy separation from the medium using an external magnet. The adsorption process followed the pseudo-second-order model and fitted the Freundlich isotherm well. Moreover, the thermodynamic studies showed that AFB1 adsorption onto Fe3 O4 @ATP was exothermic and spontaneous. The novelty of this study lies in the fabrication of magnetic composite adsorbents for AFB1 elimination from oils.