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<p>Fish spoilage is a microbially-mediated biochemical process resulting in quality deterioration, economic losses, and food safety risks. Studies have indicated that spoilage microbiota are phylogenetically diverse, with Gram-negative bacteria (<i>Pseudomonas</i>, <i>Shewanella</i>, <i>Photobacterium</i>) representing primary spoilage organisms, and Gram-positive bacteria (<i>Lactobacillus</i>, <i>Brochothrix</i>) causing spoilage only under specific conditions. Microorganisms cause spoilage through the utilization of three main metabolic processes: (i) proteolytic degradation of muscle proteins, (ii) lipolytic breakdown of triglycerides, and (iii) production of volatile bioactive organic compounds and biogenic amines. By combining high-throughput sequencing with metabolomics, researchers have been uncovering strain-specific metabolic networks and how they are influenced by environmental factors such as temperature, pH, and packaging. This review systematically examines: (1) patterns of taxonomic succession in spoilage microbiota, (2) enzymatic and biochemical pathways involved in spoilage, and (3) innovative preservation strategies targeting spoilage consortia. Emerging technologies, such as bacteriocin-mediated biopreservation, phage therapy, and modified atmosphere packaging, show considerable promise in inhibiting spoilage organisms while maintaining the sensory qualities of the fish. Microbiome-directed interventions combined with predictive modeling and precision storage systems also represent a novel approach to fish preservation. There is a critical need to integrate traditional microbiology with the use of multi-omic technologies for the development of sustainable, microbiota-based preservation strategies that address global seafood security challenges.</p>

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The role of microbiota in fish spoilage: biochemical mechanisms and innovative preservation strategies

  • 期刊论文

  • 发表日期：

    2025年6月8日

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  • Yongzhou Chi,
  • Meilin Luo,
  • Chengcheng Ding

摘要

Fish spoilage is a microbially-mediated biochemical process resulting in quality deterioration, economic losses, and food safety risks. Studies have indicated that spoilage microbiota are phylogenetically diverse, with Gram-negative bacteria (Pseudomonas, Shewanella, Photobacterium) representing primary spoilage organisms, and Gram-positive bacteria (Lactobacillus, Brochothrix) causing spoilage only under specific conditions. Microorganisms cause spoilage through the utilization of three main metabolic processes: (i) proteolytic degradation of muscle proteins, (ii) lipolytic breakdown of triglycerides, and (iii) production of volatile bioactive organic compounds and biogenic amines. By combining high-throughput sequencing with metabolomics, researchers have been uncovering strain-specific metabolic networks and how they are influenced by environmental factors such as temperature, pH, and packaging. This review systematically examines: (1) patterns of taxonomic succession in spoilage microbiota, (2) enzymatic and biochemical pathways involved in spoilage, and (3) innovative preservation strategies targeting spoilage consortia. Emerging technologies, such as bacteriocin-mediated biopreservation, phage therapy, and modified atmosphere packaging, show considerable promise in inhibiting spoilage organisms while maintaining the sensory qualities of the fish. Microbiome-directed interventions combined with predictive modeling and precision storage systems also represent a novel approach to fish preservation. There is a critical need to integrate traditional microbiology with the use of multi-omic technologies for the development of sustainable, microbiota-based preservation strategies that address global seafood security challenges.