Synthesis and characterization of zeolitic imidazolate frameworks nanocrystals and their application in adsorption and detoxification of gossypol in cottonseed oil

Yajie Wang; Jing Cao; Guanzhao Wang; Tao Wei; Kexin Hu; Wenqi Yi; Pingyang Zeng; Huifang Li; Yongning Wu; Qinghua He

doi:10.1016/j.foodchem.2023.135905

Synthesis and characterization of zeolitic imidazolate frameworks nanocrystals and their application in adsorption and detoxification of gossypol in cottonseed oil

Food Chem. 2023 Aug 30:418:135905. doi: 10.1016/j.foodchem.2023.135905. Epub 2023 Mar 16.

Authors

Yajie Wang¹, Jing Cao¹, Guanzhao Wang¹, Tao Wei¹, Kexin Hu¹, Wenqi Yi¹, Pingyang Zeng¹, Huifang Li¹, Yongning Wu², Qinghua He³

Affiliations

¹ Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China.
² Food Safety Research Unit (2019RU014) of Chinese Academy of Medical Science, NHC Key Laboratory of Food Safety Risk Assessment, China National Center for Food Safety Risk Assessment, Beijing 100021, China.
³ Department of Food Science and Engineering, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, China; Shenzhen Key Laboratory of Food Macromolecules Science and Processing, Shenzhen University, Shenzhen 518060, China. Electronic address: qinghua.he@szu.edu.cn.

PMID: 36966720
DOI: 10.1016/j.foodchem.2023.135905

Abstract

Three zeolitic imidazolate frameworks (ZIFs) materials including ZIF-8 (H₂O), ZIF-8 (methanol) and ZIF-L were synthesized and applied to the adsorption and detoxification of gossypol in cottonseed oil. The characterization results showed three ZIFs materials had good crystal structure, thermal stability and high specific surface area. The ZIFs materials had also good adsorption performance for gossypol and their adsorption processes can be described by the pseudo-second-order adsorption kinetic models. Adsorption isotherm analysis indicated that Langmuir model expressed a better conformity than Freundlich model, suggesting that the adsorption was the single-layer adsorption on a uniform site. Furthermore, the spiked experiment showed that the detoxification rate of ZIFs materials in vegetable oil was 72-86 %. A satisfied detoxification rate of 50-70 % was found in the detoxification experiment of real cottonseed oil samples. Therefore, these results demonstrate the great potential of using ZIFs materials as detoxification in cottonseed oil.

Keywords: Adsorption characteristics; Adsorption mechanism; Detoxification; Gossypol; ZIF-8; ZIF-L.

MeSH terms

Adsorption
Cottonseed Oil
Gossypol*
Imidazoles / chemistry
Nanoparticles*
Zeolites* / chemistry

Substances

Imidazoles
Cottonseed Oil
Gossypol
Zeolites