Nereis. Interdisciplinary Ibero-American Journal of Methods, Modelling and Simulation.


Revalorisation of chito-oligosaccharides obtained from fishery by-products as natural antimicrobials


Chitin is the most common polymer on Earth after cellulose and it is found mainly in the shells of crustaceans, among others. Chitosan can be obtained from chitin, it is a deacetylated derivative with specific properties such as biocide capacity, which has provided it many potential applications. However, due to its low solubility these applications are limited and chito-oligosaccharides (COS), products obtained from chitosan, take on special interest. For this reason and before the significant increase in by-products of the fishing industry in recent years, the objective of this project was to evaluate the biocide capacity of different formulations developed from COS extracted from by-products of the fishing industry against the main food microorganisms, for their revaluation as natural antimicrobials. For that purpose, the biocide capacity of seven formulations was evaluated by plate count following the UNE-EN 1276 standard, against different species of fungi and bacteria. The results obtained showed that all the formulations presented biocide capacity against the studied microorganisms and based on them, it was possible to conclude that the formula based on COS3 is the candidate with the greatest projection for the development of a future sustainable biocide product.


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