Highly efficient removal of patulin using magnetic Fe₃O₄ nanoparticle-immobilized Papiliotrema flavescens.

Authors

Mengyang Xing, Qiu Long, Yong Chen, Shiping Tian, Boqiang Li

Published in

Food chemistry. Volume 525. Issue Pt 3. Pages 150546. Jul 23, 2026. Epub Jul 23, 2026.

Abstract

Patulin is a mycotoxin mainly produced by Penicillium expansum and commonly contaminates fruits, vegetables, and their derivative products. Patulin degradation by microorganisms or enzymes is currently the most extensively studied method; however, the broader application of these organisms and enzymes is limited by the isolation from products and the requirement of expensive cofactors. In this study, a strain of Papiliotrema flavescens LY3 with excellent patulin degradation capability was isolated. It was further immobilized with magnetic nano-Fe₃O₄ particles by non-covalent electrostatic interactions. P. flavescens LY3 could efficiently convert patulin to E-ascladiol by intracellular enzymes and adsorb patulin with the cell wall. The immobilized P. flavescens LY3 showed no signs of cellular toxicity; moreover, it effectively degraded patulin in apple juice without affecting the juice's main quality indicators. Overall, this study offers a promising biological strategy to mitigate patulin contamination in fruit-derived products.

PMID:
42526127
Bibliographic data and abstract were imported from PubMed on 30 Jul 2026.

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