ALVES, Admir Sendy Santos.; SOUZA, José William de Lima.; CAVALCANTE, Laedson Eneas.; COELHO, Glauciane Danusa.; LIMA, Norma Maria.; FOOK, Marcus Vinicius Lia.
Resumen:
Beneficiation of tilapia produce by-products that are arranged in the
environment without treatment. Production of collagen and hydrolyzates from these byproducts
of fish processing has changed this scenario, due emulsifying properties,
foaming agents, colloidal stabilizers, biodegradable films, microencapsulating agents
with tendency to substitute synthetic material for natural with a bioactivity and
biocompatibility for medical applications. In the acid-base extraction method, residues
were treated using solutions of: NaCl (0.8M), and different concentrations of NaOH
(0.05M; 0.1M; 0.2M) and acetic acid (0.05M), aiming at the decoupling of collagen.
Calculations were made to determine the collagen yield relative to the raw material,
obtaining a higher yield of 12.68% with the concentration 0.1 M of NaOH, in lower and
higher concentrations, variation in yield occurred. Morphological characterization was
performed by optical microscopy (OM) and scanning electron microscopy (SEM) and
chemical characterization by X-ray Dispersive Energy (EDS) technique and Fourier
Transform Infrared Spectroscopy (FTIR). In the results of MO and SEM were obtained
micrometric details of structure, topography and surface of collagen particles, with
morphological similarities with other natural polymers In the EDS analysis it was shown
the percentages of the expected chemical elements typically for organic polymers. FTIR
assay showed through bands characteristics reported in literature on chemical bonds
forming clusters between such elements reported in the EDS.
