7 documents found, page 1 of 1
Bacterial cellulose nanocrystals or nanofibrils as Pickering stabilizers in low...
Pinto, Náyra O. F.; Bourbon, Ana I.; Martins, Daniela Sofia Rodrigues; Pereira, André; Cerqueira, Miguel A.; Pastrana, Lorenzo; Gama, F. M.This investigation assessed the potential of bacterial cellulose (BC) in two distinct forms, nanocrystals (BC-NC) and oxidized nanofibrils (BC-NF), as stabilizers for low oil-in-water emulsions (1 % v/v). The research explored the impact of ionic strength and BC concentration on the physico-chemical characteristics, stability, and rheological properties of those emulsions. Nanofibrils had diameters ranging from...
All-cellulose nanocomposite films based on bacterial cellulose nanofibrils and ...
Nascimento, Eligenes S.; Barros, Matheus O.; Cerqueira, Miguel A.; Lima, Helder L.; Borges, Maria de Fátima; Pastrana, Lourenzo M.; Gama, F. M.All-cellulose composites are promising materials due to the expectable strong filler-matrix interaction. In the present work, films based on bacterial cellulose were produced, using nanofibrils as matrix and nanocrystals as filler, as well as glycerol as plasticizer. The effect of the nanocrystals content (05 wt.%) on the mechanical properties, barrier properties, water resistance, and others were investigated....
Stable microfluidized bacterial cellulose suspension
Andrade, Fabia K.; Morais, João Paulo S.; Muniz, Celli R.; Nascimento, José Heriberto O.; Vieira, Rodrigo S.; Gama, F. M.; Rosa, Morsyleide F.In this work, nanofibrillated suspensions of bacterial cellulose (BC) were produced via microfluidization. The effects of the size of the openings of the microfluidizer chamber and ultrasonication on the nanofibril properties were evaluated. The results of the X-ray diffraction analysis indicated a considerable reduction in BC crystallinity (8665%) and crystallite size (5.84.0 nm) after microfluidization and ul...
Inhalation of bacterial cellulose nanofibrils triggers an inflammatory response...
Silva-Carvalho, Ricardo; Silva, João P.; Ferreirinha, Pedro; Leitão, A.; Andrade, Fábia K.; Costa, Rui M. Gil da; Cristelo, C.; Rosa, Morsyleide F.In view of the growing industrial use of Bacterial cellulose (BC), and taking into account that it might become airborne and be inhaled after industrial processing, assessing its potential pulmonary toxic effects assumes high relevance. In this work, the murine model was used to assess the effects of exposure to respirable BC nanofibrils (nBC), obtained by disintegration of BC produced by Komagataeibacter hanse...
Bacterial cellulose nanofiber-based films incorporating gelatin hydrolysate fro...
Lima, Helder Levi Silva; Gonçalves, Catarina; Cerqueira, Miguel Ângelo; do Nascimento, Elégenes Sampaio; Gama, F. M.; Rosa, Morsyleide F.In this work, films based on bacterial cellulose nanofibers (BCNFs) incorporating gelatin hydrolysate (GH) from tilapia skin were produced. The effect of plasticizer (sorbitol or glycerol) and GH incorporation was evaluated on the physicalchemical and optical properties of films. BCNFs were produced using bacterial cellulose obtained from Hestrin and Schramm (HS) medium (BCNF-HS) or cashew apple juice (BCNF-CM)...
Wheat straw hemicelluloses added with cellulose nanocrystals and citric acid. E...
Pereira, Paulo H. F. [UNESP]; Waldron, Keith W.; Wilson, David R.; Cunha, Arcelina P.; Brito, Edy S. de; Rodrigues, Tigressa H. S.; Rosa, Morsyleide F.Made available in DSpace on 2018-11-26T15:44:01Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-05-15; United Kingdom Biotechnology and Biological Sciences Research Council (BBSRC) Institute Strategic Programme 'Food and Health'; BBSRC/EMBRAPA; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); Wheat straw has been used as a source of hemicelluloses (WSH) and cellulose nanocrystals (CN...
Conductive nanocomposites based on cellulose nanofibrils coated with polyanilin...
Silva, Michael J. [UNESP]; Sanches, Alex O. [UNESP]; Malmonge, Luiz F. [UNESP]; Medeiros, Eliton S.; Rosa, Morsyleide F.; McMahan, Colleen M.Submitted by Vitor Silverio Rodrigues (vitorsrodrigues@reitoria.unesp.br) on 2014-05-27T11:26:57Z No. of bitstreams: 0; Made available in DSpace on 2014-05-27T11:26:57Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-09-01; Cellulose nanofibrils (CNF) were extracted by acid hydrolysis from cotton microfibrils and nanocomposites with polyaniline doped with dodecyl benzenesulphonic acid (PANI-DBSA) were obt...