Psoriasin inhibits microbial growth in food by metal sequestering
Gitler, M.; Sivan, G.; Breuer, Y.; Chang, C.; Sova, M.; Hayouka, Z.; Gal, M.
Show abstract
Food spoilage is a significant economic and environmental concern, and it is estimated that [~]30% of fresh food is destroyed due to food spoilage between harvest to consumer. Current food preservatives are chemicals that are associated with various health risks and often have limited effectiveness under certain conditions like pH and temperature. Consequently, theres a growing need to develop effective, natural, and economical food preservatives. Herein, we studied the natural protein psoriasin as a potential food preservative. Psoriasin is naturally secreted in the oral cavity and has an effective and validated antimicrobial activity which makes it a potentially effective and safe protein-based food preservative. Indeed, our preliminary results show promising antimicrobial activity of the recombinant protein against food-related microbial organisms in vitro and in various food types. In addition, it is recombinantly expressed at high levels, which could set a cost-effective manufacturing process. These results set psoriasin as a safe and effective natural food preservative, addressing consumer demand for healthier food options and reducing food waste.
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