Extraction and characterization of chitin scales from red tilapia (oreochromis sp.) from Huila, Colombia by chemical methods

Chitin is the second largest lineal biopolymer in the world. Recent advances suggest chitin can be obtained from fish scales. In this article, three different treatments were used to obtain chitin from red tilapia (Orechromis sp.) fish scales. All samples were insoluble in solvents and acid used. Th...

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Autores:
García Gómez, Angela Goretty
Conde Quintero, Marnie
Castro Salazar, Hans Thielin
Tipo de recurso:
Article of journal
Fecha de publicación:
2019
Institución:
Universidad de Medellín
Repositorio:
Repositorio UDEM
Idioma:
spa
OAI Identifier:
oai:repository.udem.edu.co:11407/5531
Acceso en línea:
http://hdl.handle.net/11407/5531
https://doi.org/10.22395/rium.v18n34a5
Palabra clave:
Chitin
Biopolymer
Scales
Red tilapia
Quitina
Biopolímero
Escamas de peixe
Tilápia vermelha
Quitina
Biopolímero
Escamas
Tilapia roja
Rights
License
http://creativecommons.org/licenses/by-nc-sa/4.0/
Description
Summary:Chitin is the second largest lineal biopolymer in the world. Recent advances suggest chitin can be obtained from fish scales. In this article, three different treatments were used to obtain chitin from red tilapia (Orechromis sp.) fish scales. All samples were insoluble in solvents and acid used. They also presented different percentages of carbon (3.27-55.80 %); oxygen (22.09-42.51 %); nitrogen (11.61-11.81 %); P (1.08-22.2 %); Ca (1.26-26.11 %); Na (0.53-1.02 %); and Mg (0.26-0.91 %). The 3,340-3,380 cm-1 bands shown in infrared spectra correspond to hydroxyl group of polymeric glucosamine bases and 1,415 -1,456 cm-1 peaks correspond to characteristic N-H bond of amide functional group. Images (SE) showed different dimensions of particles (0.1 -30 μm) and mean molecular masses, Mw, for Ch1, Ch2 and Ch3 were 1064.28, 1064.56 and 823.428, respectively, with a 1.0074 polydispersity.