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Functional characterization of biodegradable films obtained from whole Paecilomyces variotii biomass.
Martinez, Ezequiel A; Salvay, Andrés G; Sanchez-Díaz, Macarena R; Ludemann, Vanesa; Peltzer, Mercedes A.
Afiliação
  • Martinez EA; Laboratory of Obtention, Modification, Characterization and Evaluation of Materials (LOMCEM), Department of Science and Technology, National University of Quilmes, Bernal, Argentina.
  • Salvay AG; Laboratory of Food Mycology (LMA), Department of Science and Technology, National University of Quilmes, Bernal, Argentina.
  • Sanchez-Díaz MR; Laboratory of Obtention, Modification, Characterization and Evaluation of Materials (LOMCEM), Department of Science and Technology, National University of Quilmes, Bernal, Argentina.
  • Ludemann V; Laboratory of Food Mycology (LMA), Department of Science and Technology, National University of Quilmes, Bernal, Argentina.
  • Peltzer MA; National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina.
Int Microbiol ; 2024 Mar 14.
Article em En | MEDLINE | ID: mdl-38483746
ABSTRACT
The indiscriminate use of petroleum-based polymers and plastics for single-use food packaging has led to serious environmental problems due the non-biodegradable characteristics. Thus, much attention has been focused on the research of new biobased and biodegradable materials. Yeast and fungal biomass are low-cost and abundant sources of biopolymers with highly promising properties for the development of biodegradable materials. This study aimed to select a preparation method to develop new biodegradable films using the whole biomass of Paecilomyces variotii subjected to successive physical treatments including ultrasonic homogenization (US) and heat treatment. Sterilization process had an important impact on the final filmogenic dispersion and mechanical properties of the films. Longer US treatments produced a reduction in the particle size and the application of an intermediate UT treatment contributed favorably to the breaking of agglomerates allowing the second US treatment to be more effective, achieving an ordered network with a more uniform distribution. Samples that were not filtrated after the sterilization process presented mechanical properties similar to plasticized materials. On the other hand, the filtration process after sterilization eliminated soluble and hydratable compounds, which produced a reduction in the hydration of the films.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Int Microbiol Assunto da revista: MICROBIOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Argentina

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Int Microbiol Assunto da revista: MICROBIOLOGIA Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Argentina