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Purification Strategies for Bacteriocins and Bacteriocin-Like Inhibitory Substances (BLIS)

Zhang Jin Ng

Zhang Jin Ng

Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, Jalan Sungai Dua, Gelugor, Pulau Pinang, 11800 Malaysia

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Rozi Nuraika Binti Ramli

Rozi Nuraika Binti Ramli

Malaysia Institute of Pharmaceuticals and Nutraceuticals, National Institutes of Biotechnology Malaysia, Halaman Bukit Gambir, Gelugor, Pulau Pinang, 11700 Malaysia

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Joo Shun Tan

Corresponding Author

Joo Shun Tan

Bioprocess Technology, School of Industrial Technology, Universiti Sains Malaysia, Jalan Sungai Dua, Gelugor, Pulau Pinang, 11800 Malaysia

E-mail: [email protected]

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First published: 25 June 2025

Abstract

Bacteriocins and bacteriocin-like inhibitory substances (BLIS) are antimicrobial peptides produced by bacteria with diverse applications in food preservation, pharmaceuticals, and biotechnology. Their practical use depends on efficient purification from complex fermentation broths to ensure bioactivity, purity, and safety. A range of purification techniques have been explored, including ammonium sulfate precipitation, aqueous two-phase systems (ATPS), pH-mediated cell adsorption–desorption, chromatography, and polyethylene glycol (PEG)-impregnated resin systems. Each method offers specific advantages and limitations regarding selectivity, recovery yield, process scalability, and compatibility with downstream operations. Innovation such as ionic liquid-based ATPS has demonstrated improved separation efficiency and milder processing conditions, making them attractive for sensitive biomolecules. Understanding the underlying principles of these methods enables the development of tailored purification workflows that enhance product quality and support the commercialization of bacteriocin-based bioactive agents.

Conflicts of Interest

The authors declare no conflicts of interest.

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