Probiotics and Postbiotics for Green Control of Foodborne Pathogens: Intelligent Detection and Biopreservation Strategies for Safer Foods.

Abstract

The extensive use of chemical preservatives in the food industry has raised concerns over their association with gut microbiota imbalance, allergenic reactions, and potential carcinogenicity. Growing consumer demand for "clean label" products, coupled with regulatory pressures, has accelerated the search for safer and more sustainable alternatives. In this study, it is reported for the first time that the synthesis of AIEE-type Supra-CDs using p-phenylenediamine (p-PA) and thiourea (TU), a breakthrough that provides a new class of nanomaterials with superior optical and antimicrobial properties. More importantly, the study demonstrates a quantitative improvement of spectral overlap through controllable inner filter effect (IFE), establishing a reliable strategy to enhance detection sensitivity and broaden applicability in food safety monitoring. Beyond their intrinsic antimicrobial potential, these Supra-CDs integrate seamlessly with intelligent detection platforms such as biosensors, CRISPR-based assays, and AI-assisted analytics, enabling real-time evaluation of probiotic- and postbiotic-based preservation systems. By combining novel material synthesis with precision monitoring technologies, this work offers a dual innovation: reducing reliance on synthetic additives while providing scalable tools for sustainable food preservation. The findings not only advance the frontier of biopreservation research but also align with global initiatives for consumer health and environmental sustainability.