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    Manuscript title: antifungal proteins from moulds: analytical tools and potential application to dry-ripened foods

    Delgado, Josué and Owens, Rebecca A. and Doyle, Sean and Asensio, Miguel A. and Núñez, Felix (2016) Manuscript title: antifungal proteins from moulds: analytical tools and potential application to dry-ripened foods. Applied Microbiology and Biotechnology, 100 (16). pp. 6991-7000.

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    Moulds growing on the surface of dry-ripened foods contribute to their sensory qualities, but some of them are able to produce mycotoxins that pose a hazard to consumers. Small cysteine-rich antifungal proteins (AFPs) from moulds are highly stable to pH and proteolysis and exhibit a broad inhibition spectrum against filamentous fungi, providing new chances to control hazardous moulds in fermented foods. The analytical tools for characterizing the cellular targets and affected pathways are reviewed. Strategies currently employed to study these mechanisms of action include ‘omics’ approaches that have come to the forefront in recent years, developing in tandem with genome sequencing of relevant organisms. These techniques contribute to a better understanding of the response of moulds against AFPs, allowing the design of complementary strategies to maximize or overcome the limitations of using AFPs on foods. AFPs alter chitin biosynthesis, and some fungi react inducing cell wall integrity (CWI) pathway. However, moulds able to increase chitin content at the cell wall by increasing proteins in either CWI or calmodulin-calcineurin signalling pathways will resist AFPs. Similarly, AFPs increase the intracellular levels of reactive oxygen species (ROS), and moulds increasing G-protein complex β subunit CpcB and/or enzymes to efficiently produce glutathione may evade apoptosis. Unknown aspects that need to be addressed include the interaction with mycotoxin production by less sensitive toxigenic moulds. However, significant steps have been taken to encourage the use of AFPs in intermediate-moisture foods, particularly for mould-ripened cheese and meat products.

    Item Type: Article
    Additional Information: Cite as: Delgado, J., Owens, R.A., Doyle, S. et al. Appl Microbiol Biotechnol (2016) 100: 6991.
    Keywords: Antifungal; proteins; Food safety; Proteomics; Toxigenic moulds;
    Academic Unit: Faculty of Science and Engineering > Biology
    Item ID: 10911
    Identification Number:
    Depositing User: Rebecca Owens
    Date Deposited: 02 Jul 2019 14:27
    Journal or Publication Title: Applied Microbiology and Biotechnology
    Publisher: Springer Verlag
    Refereed: Yes
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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