Results 21 to 30 of about 3,307 (103)

Análisis de películas biopoliméricas de almidón para potencial aplicación en optoelectrónica.

Mundo Fesc
Research into energy-efficient materials, such as perovskites, has increased due to their characteristics, low cost, and variety of production methods, which allow for the development of optoelectronic devices.
Hariana Farfán Benavides, Karol Roa Bohórquez, Raúl Sánchez Alarcón, Ricardo Paredes Roa   +3 more
doaj   +1 more source

Preparação e caracterização de nanocompósitos poliméricos baseados em quitosana e argilo minerais

Polímeros, 2014
Neste trabalho foram preparados nanocompósitos baseados em quitosana e diferentes tipos de argilas usando polietileno glicol (PEG) como plastificante. As amostras foram caracterizadas por espectroscopia de infravermelho (FTIR), difração de raios X (DRX),
Ana Paula Santos de Melo Fiori, Victor Parizio Gabiraba, Ana Paula Perdigão Praxedes, Marcelo Ramon da Silva Nunes, Tatiane L. Balliano, Rosanny Christhinny da Silva, Josealdo Tonholo, Adriana Santos Ribeiro   +7 more
doaj   +1 more source

Antibacterial and Antibiofilm Activities of Bacterial Nanocellulose Membranes Incorporated With β‐Cyclodextrin–Silver Nanoparticles

ChemistrySelect, Volume 11, Issue 16, 27 April 2026.
General scheme for the surface modification of silver nanoparticles with β‐CD and the following application in solution or incorporated into bacterial nanocellulose. ABSTRACT Alternative antimicrobial nanostructured surfaces have attracted attention in the literature due to the rising resistance profile of bacteria against conventional antibiotics.
Elisângela Gomes de Lima Oliveira, Paloma Maria de Sousa Araújo, Alan Christie da Silva Dantas, Ricardo Santana de Lima, Mateus Matiuzzi da Costa, Mariana Gisbert Jardim dos Santos, Tommaso Del Rosso, Maria Julia Mieli, Hernane da Silva Barud, Helinando Pequeno de Oliveira   +9 more
wiley   +1 more source

Produção de biopolímero utilizando resina da ciriguela (Spondias purpurea) [PDF]

, 2018
Conventional synthetic polymers are produced from petroleum byproducts, a non-renewable natural resource, and cause various environmental problems stemming mainly from their difficult degradation that can take hundreds of years. Based on the principle of
Queiroz Junior, Antonio Batista de
core  

Tuber and Root Starches: Molecular and Physicochemical Properties

Starch - Stärke, Volume 78, Issue 2, February 2026.
Dale dale, Mashua, and Pituca starches exhibited distinct amorphous and ordered structural regions. Among them, Dale dale starch showed the highest degree of crystallinity. ABSTRACT Starches extracted from different botanical sources can be used in a wide range of food applications; however, understanding the relationships among their properties is ...
Frank F. Velasquez‐Barreto, Gabriela Barraza‐Jaureguí, Rosinelson da Silva Pena   +2 more
wiley   +1 more source

Microesferas de quitosana obtidas via spray drying contendo os agentes quelantes 3,3-BIS-N,N, DI-(carboximetil) aminometil-o-cresol-sulfonaftaleína e 8-hidroxiquinoleína-5 ácido sulfônico como adsorventes para Cu(II), Cd(II), Zn(II) e Fe(III) em meio aquoso [PDF]

, 2008
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Fisicas e Matematicas. Programa de Pós-graduação em QuímicaO presente estudo teve como propósito a preparação de microesferas de quitosana reticuladas com glutaraldeído ...
Vitali, Luciano
core  

Análisis de las polihidroxialcanoato sintasas (PhaC1 y PhaC2) en una cepa de Pseudomonas fluorescens IBUN S1602, aislada en suelos colombianos

Revista Colombiana de Biotecnología, 2011
Título en ingles: Analysis of polyhydroxyalkanoate synthases (PhaC1 and PhaC2) in a strain of Pseudomonas fluorescens   IBUN S1602 isolated from Colombian soil.
Julieth Serrano Riaño, Luz Ángela Sastoque Rivera, Dolly Montoya Castaño, Nubia Moreno Sarmiento   +3 more
doaj   +2 more sources

Síntese e caracterização de estruturas densas e porosas de quitosana [PDF]

Polímeros, 1999
O presente trabalho trata da preparação e caracterização de membranas de quitosana porosas e densas, que possuem diversas aplicações tecnológicas. Para tanto, foram utilizadas as técnicas de microscopia (microscopia eletrônica de varredura - MEV - e ...
Marisa M. Beppu, Eduardo J. Arruda, Cesar C. Santana   +2 more
doaj   +1 more source

Performance of Carboxymethyl Starch and Chitosan as Green Scale Inhibitors for Calcite and Gypsum Precipitation

ChemistrySelect, Volume 10, Issue 21, June 4, 2025.
Carboxymethylated chitosan (CMCh) and starch (CMSt) were evaluated as eco‐friendly scale inhibitors. Static tests demonstrated 50%–95% CaSO₄ inhibition, whereas dynamic tests against CaCO₃ showed MICs of 20–40 ppm (CMCh) and 10 ppm (CMSt). Both biopolymers exhibited calcium compatibility and altered crystal morphologies, confirming their potential as ...
Hugo N. S. Barros, Kaio A. B. Pereira, Matheus V. Oliveira, Luiz Antônio B. Rocha, Luiz C. M. Palermo, Claudia R. E. Mansur   +5 more
wiley   +1 more source

Evaluación poscosecha de la combinación quitosano-benzoato de sodio sobre la inducción de resistencia bioquímica en frutos de yaca (Artocarpus heterophyllus Lam.) inoculados con Rhizopus stolonifer

AIA Avances en Investigación Agropecuaria
Objetivo. Evaluar la inducción de resistencia bioquímica, mediante la actividad de polifenoloxidasa (PPO) y fenilalanina amonio-liasa (PAL) en yaca (Artocarpus heterophyllus Lam.), tratada con un recubrimiento quitosano-benzoato de sodio (QBS) e ...
Leonardo Daniel Coronado-Partida, Mario Orlando Estrada-Virgen , Octavio Jhonathan Cambero-Campos   +2 more
doaj   +1 more source