Título:	Valorization of amazonian fruit agro-industrial by-products for sustainable production of bacterial cellulose nanofibers for food bio-packaging.
Autoria:	MIRANDA, K. W. E. SÁ, G. V. FROTA, M. M. SANTOS NETO, J. P. dos CARVALHO, M. Â. A. P. de NUNES, N. M. V. MACHADO, M. T. da C. SOUZA, T. M. de BASTOS, M. do S. R. VASCONCELOS, L. B. de
Afiliação:	KELVI WILSON EVARISTO MIRANDA, UNIVERSIDADE FEDERAL DO CEARÁ; GABRIEL VIANA SÁ, UNIVERSIDADE FEDERAL DO CEARÁ; MARYANA MELO FROTA, UNIVERSIDADE FEDERAL DO CEARÁ; JOÃO PAIXÃO DOS SANTOS NETO, UNIVERSIDADE DA MADEIRA; MIGUEL ÂNGELO ALMEIDA PINHEIRO DE CARVALHO, UNIVERSIDADE DA MADEIRA; NUNO MIGUEL VELOSA NUNES, UNIVERSIDADE DA MADEIRA; MARIANA TEIXEIRA DA COSTA MACHADO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; TIAGO MARCOLINO DE SOUZA, UNIVERSIDADE ESTADUAL DO AMAPÁ; MARIA DO SOCORRO ROCHA BASTOS, CNPAT; LUCICLÉIA BARROS DE VASCONCELOS, UNIVERSIDADE FEDERAL DO CEARÁ.
Ano de publicação:	2026
Referência:	Polymer Bulletin, v. 83, n. 6, 290, June 2026.
Conteúdo:	The expansion of agro-industry creates large volumes of carbon-rich organic waste that pose environmental challenges but also offer opportunities for valorization as sustainable feedstocks for biocomposite production. This study aimed to produce and characterize bacterial cellulose nanofibers (BCN) from agro-industrial wastes (AIW) from soursop (Annona muricata L.; BCN-S) and genipap (Genipa americana L.; BCN-G) collected in the Brazilian Amazon. Substrates (2.5% w/v) were heated to 70 °C for 15 min and inoculated with 10% (w/v) starter culture SCOBY (symbiotic culture of bacteria and yeasts). The substrates exhibited variations in the carbohydrate-to-cellulose conversion profile due to the selective activity of SCOBY. BCN-G showed a good yield (14.50 g/L), highest crystallinity index (CrI = 75.2%), a calculated crystallite size (Dav) of 163.1 nm and the presence of type I cellulose, as well as traces of type II cellulose. However, the control BCN sample (sucrose) exhibited a higher enthalpy of fusion (280 J/g), suggesting greater crystalline purity. BCN-G was incorporated into potato-starch films (5–15% v/v) yielding homogeneous, mostly transparent films with strong UV-blocking (> 99% in tested regions) and numerically lower water vapor permeability (from 1.36 to 1.24 g.mm/m2.h.kPa for the 15% BCN sample). However, differences in some barrier metrics were not statistically significant. Overall, BCN derived from genipap byproducts appears promising as a biodegradable reinforcing agent for starch-based food packaging, supporting circular economy goals and SDG 12 (Responsible Consumption and Production).
Thesagro:	Celulose Fermentação Aeróbica Resíduo Industrial Graviola Jenipapo Embalagem Biofilme Annona Muricata Genipa Americana
NAL Thesaurus:	Cellulose Fermentation Plant byproducts Packaging materials Food packaging
Palavras-chave:	Nanofibras de celulose bacteriana Valorização de resíduos agroindustriais Subprodutos agroindustriais de frutas SCOBY Filmes de amido de batata Embalagem biodegradável para alimentos Barreira à radiação ultravioleta Permeabilidade ao vapor de água Bacterial cellulose nanofibers Agro-industrial waste valorization Fruit agro-industrial byproducts Symbiotic culture of bacteria and yeasts Potato starch films Biodegradable food packaging UV-shielding properties Water vapor permeability
ISSN:	1436-2449
Digital Object Identifier:	https://doi.org/10.1007/s00289-026-06348-y
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPAT)