García Gómez, Angela GorettyRomero Ramos, RodrigoCastro Salazar, Hans Thielin2020-12-102020-12-102016Producción + Limpia - Julio - Diciembre de 2016. Vol.11, No. 21909-0455http://hdl.handle.net/10567/2896Acuicultural industries represent almost 50 % of the fish products available and Huila province holds the first place in Colombia in terms of tilapia fish (Oreochromis sp) production and exports. Nevertheless, like any transformation industrial activity, it generates waste products that affect the environment and fish scales are one of them. In some cases they are thrown into the water bodies, increasing the organic matter content, or buried, increasing the proliferation of vectors such as flies or rodents. In order to have an industry that meets the sustainable development standards, alternatives to make the fish scales generated by the different stages of tilapia fish processing an asset were sought, aiming to obtain biopolymers such as chitin and chitosan, which have great application chances in the pharmaceutical and the cosmetic industries. For that purpose, the scales were cleaned and dried and, later, chemically demineralized deproteinized and deacetylated in order to obtain the products intended. The scales were treated with NaOH 0,5N at 80 °C for four hours, then mixed with HCL 1,25N at 30 °C during eight hours and taken to neutral pH. For the deacetylation, two techniques were evaluated: one with a strong base, NaOH at 0,75N at 100 ºC called (M1) and the other with a strong acid of HCl at 37 % during 24 hours called (M2), obtaining positive results in the infrared analysis for apatite, hydroxyapatite, and chitosanesAcceso abiertoCorporación Universitaria LasallistaÁrea Metropolitana del Valle de AburráIndustria acuícolaProductos pesquerosProducción animalComercio exteriorAlimentos - Comercio exteriorinfo:eu-repo/semantics/openAcces