Desarrollo de películas indicadoras de pH a base de quitosano y cera de abejas
Palavras-chave:
quitosano; rojo fenol; cera de abejas; tinte polimérico; películas indicadoras de pH.Resumo
Se sintetizó un tinte polimérico sensible al pH, injertando rojo de fenol en quitosano, utilizando una metodología sencilla. El injerto exitoso se confirmó mediante técnicas físico-químicas. A partir del tinte polimérico obtenido, se desarrollaron películas indicadoras de pH con la adición de cera de abejas. Se evaluó la influencia de la concentración de quitosano y cera de abejas sobre la humedad y la permeabilidad al vapor de agua de las películas. Los valores de humedad más bajos de las películas formuladas se obtuvieron para concentraciones bajas de cera y quitosano. Sin embargo, la permeabilidad fue de menor a mayor contenido de cera, independientemente del contenido de quitosano. La capacidad colorimétrica de la mejor película obtenida, cambió en el rango de pH esperado y en contacto con camarones utilizados como alimento modelo; por lo tanto, las películas obtenidas sugieren su posible aplicación en alimentos.
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Copyright (c) 2024 Roberto Sáez-Gastón, Dairon Iglesias-Guevara, Alicia Casariego-Año, Carlos A. Peniche-Covas, Yaimara Solís-Moré
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