<p>Cold plasma is a nonthermal technology with high transformative potential in the food processing sector. Beyond its well-known antimicrobial and decontamination roles, plasma-generated reactive oxygen and nitrogen species, UV photons, and charged particles induce selective structural modifications in enzymes, resulting in conformational shifts that can lead to irreversible inactivation. This enables novel approaches for enzyme modification, such as targeted inactivation and functional modification, thereby facilitating applications in baking, meat processing, juice clarification, and biosensor development. This review provides a comprehensive overview of cold plasma-enzyme interactions, highlighting the underlying molecular mechanisms, including structural alterations, oxidation of active sites, and conformational dynamics. The effects of major operational parameters, including cold plasma treatment time, input power, gas composition, and enzyme-specific properties, are discussed in relation to their influence on enzyme activity. Despite promising results, challenges remain in achieving process specificity, standardization, and scale-up. Future advances in real-time plasma diagnostics, computational modelling, and enzyme structural analytics will be critical to establishing cold plasma as a precision tool in next-generation food processing.</p>

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Cold plasma technology for food enzyme modulation: mechanisms, functional implications, and industrial relevance

  • T. Jayasree Joshi,
  • Ajna Alavudeen,
  • Jobil J. Arackal,
  • Ann Justin Kappen

摘要

Cold plasma is a nonthermal technology with high transformative potential in the food processing sector. Beyond its well-known antimicrobial and decontamination roles, plasma-generated reactive oxygen and nitrogen species, UV photons, and charged particles induce selective structural modifications in enzymes, resulting in conformational shifts that can lead to irreversible inactivation. This enables novel approaches for enzyme modification, such as targeted inactivation and functional modification, thereby facilitating applications in baking, meat processing, juice clarification, and biosensor development. This review provides a comprehensive overview of cold plasma-enzyme interactions, highlighting the underlying molecular mechanisms, including structural alterations, oxidation of active sites, and conformational dynamics. The effects of major operational parameters, including cold plasma treatment time, input power, gas composition, and enzyme-specific properties, are discussed in relation to their influence on enzyme activity. Despite promising results, challenges remain in achieving process specificity, standardization, and scale-up. Future advances in real-time plasma diagnostics, computational modelling, and enzyme structural analytics will be critical to establishing cold plasma as a precision tool in next-generation food processing.