Journal
FOOD CHEMISTRY
Volume 270, Issue -, Pages 1-9Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2018.07.072
Keywords
Metal-organic framework; Adsorbent; Patulin removal; Time-saving
Funding
- National Natural Science Foundation of China [21675127]
- Development Project of Qinghai Key Laboratory [2017-ZJ-Y10]
- Fundamental Research Funds for the Northwest AAMP
- F University of China [2014YB093, 2452015257]
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Patulin (PAT) is one of the most common toxic contaminants of apple juice, which causes severe food safety issues throughout the apple industry. In order to remove PAT efficiently, a metal-organic framework-based adsorbent (UiO-66(NH2)@Au-Cys) was successfully synthesized and used for PAT removal from juice-pH simulation solution and real apple juice. Batch adsorption experiments were systematically performed to study the adsorption behavior for PAT. The results showed that adsorption process could be well described by the Pseudo-second order model and Freundlich isotherm model. The maximum adsorption capacity (4.38 mu g/mg) was 10 times higher than the microbe-based biosorbents. Thermodynamic investigation demonstrated that adsorption process was spontaneous and endothermic. Furthermore, no marked cytotoxicity on NIH 3T3 cell lines was observed when the concentration of the adsorbent was lower than 10 mu g/mL. Therefore, UiO-66( NH2)@Au-Cys is a potential adsorbent for PAT removal from apple juice with little quality changes
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