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Centro de Investigaciones Interdisciplinarias en Ciencias y Humanidades, UNAM; Instituto de Ciencias Aplicadas y Tecnología, UNAM; Centro de Nanociencias y Nanotecnología, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx
Millán Chiu, Blanca Edith, et al. (2023). Shock wave-assisted extraction of chitin from Aspergillus niger: physicochemical and electrical characterization. Mundo Nano. Revista Interdisciplinaria en Nanociencias y Nanotecnología; Vol. 16 Núm. 31, 2023: 2do semestre / Nanomateriales avanzados: desde la síntesis hasta la innovación tecnológica; 1e-19e. Recuperado de https://repositorio.unam.mx/contenidos/4147801
Autor(es)
Millán Chiu, Blanca Edith; Alarcón Flores, Eduardo Abel; Ortiz Olan, Eduardo; Fernández, Francisco; Loske, Achim M.
Tipo
Artículo de Investigación
Área del conocimiento
Multidisciplina
Título
Shock wave-assisted extraction of chitin from Aspergillus niger: physicochemical and electrical characterization
Fecha
2023-05-23
Resumen
Chitin is a linear polysaccharide produced by animal and fungal species. One of its sources is the fungus Aspergillus niger, which is culturable in industrial bioreactors. Chitin is a neutral biopolymer that modifies the electrical properties of composite materials. These are useful features in some electronic devices. This study aimed to carry out physicochemical characterizations of chitin films obtained from the above-mentioned fungus, using a chemical method enhanced with exposure to heat and shock waves, and to determine their electrical resistivity at high voltages (between 10 and 20 kV). Shock waves were used in this study because they are known to induce pores into cells and could promote alkali entry into the hypha, allowing better removal of residual cellular components. Chitin was neutralized, dried, and films were produced. Residual protein values were quantified by bicinchoninic acid assay (BCA). The films obtained had low amounts of protein. The characterization of the specific morphotype extracted was done by FTIR and XRD. An especially designed circuit revealed significant variations of the resistivity as the voltage was varied. This behavior is typical of a non-linear varistor and, to the best of our knowledge, has not been reported for chitin.
Idioma
spa
ISSN
ISSN electrónico: 2448-5691; ISSN impreso: 2007-5979
