Results 41 to 50 of about 11,620 (199)
Synthesis and physicochemical characterization of chemically modified chitosan by succinic anhydride
Brazilian Archives of Biology and Technology, 2006 The N-succinil-chitosan is a chemically modified derivative of the biopolymer chitosan. The succinic anhydride attached to the free amino groups presented along the chitosan's polymer chain imparts to the molecule different physicochemical properties not
Karine Gargioni Pereira Correa de Mello +3 more
doaj +1 more source
Obtenção e caracterização de blendas colágeno-quitosana [PDF]
Química Nova, 2002 Biodegradable polymer blends were obtained using collagen and chitosan. Membranes of collagen and chitosan in different proportions (3:1, 1:1 and 1:3) were prepared by mixing their acetate solutions (pH 3.5) at room temperature. The blends were characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier Transform
Tonhi, Edivan +1 more
openaire +4 more sources
Polímeros, 2015 Inúmeras pesquisas buscam fármacos com propriedades cicatrizantes, capazes de reparar lesões cutâneas. O objetivo deste estudo foi caracterizar quimicamente uma quitosana e avaliar seus efeitos cicatrizantes em lesões cutâneas de ratos.
Rodrigo Martins Fráguas +5 more
doaj +1 more source
Chitosan reduces infection by Guignardia citricarpa in postharvest 'Valencia' oranges
Brazilian Archives of Biology and Technology, 2009 Citrus fruits are affected by the black spot disease caused by Guignardia citricarpa. Resistance induction is an alternative control measure and chitosan exhibits potential as resistance inducer. The effect of chitosan on G.
Maria Cristina Canale Rappussi +3 more
doaj +1 more source
infoANALITÍCA, 2020 En este estudio se evaluó la capacidad de adsorción de la quitosana obtenida de residuos de camarón previamente caracterizada frente a herbicidas de la familia de las triazinas.
Aranys Borja-Urzola +4 more
doaj +1 more source
Quitosana: biopolímero funcional com potencial industrial biomédico [PDF]
Química Nova, 2009 The importance of chitosan has grown significantly over the last two decades due to its renewable and biodegradable source, and also because of the recent increase in the knowledge of its functionality in the technological and biomedical applications. The present article reviews the biopolymer chitosan and its derivatives as versatile biomaterials for ...
Laranjeira, Mauro C. M. +1 more
openaire +3 more sources
, 2021 A producao de biofilmes e revestimentos polimericos a base de polimeros naturais, a fim de aplica-los como embalagens de alimentos e alvo de constantes pesquisas, devido a necessidade de diminuir o volume de embalagens plasticas descartadas e otimizar as
Vanessa de Souza Santos +6 more
semanticscholar +1 more source
Obtenção, caracterização e uso de genipina como agente reticulante de hidrogeis de quitosana
Research, Society and Development, 2021 Uma variedade de hidrogéis, que correspondem a uma classe de materiais poliméricos altamente hidratados, estão sendo empregados como biomateriais.
R. Cunha +5 more
semanticscholar +1 more source
Quitosana: derivados hidrossolúveis, aplicações farmacêuticas e avanços [PDF]
Química Nova, 2006 Chitin and chitosan are copolymers build from N-acetyl-D-glucosamine and D-glucosamine. The former is widely found in nature and yields the latter on deacetylation. The copolymers are being used for several purposes. Since 1977, when the First International Conference on Chitin and Chitosan was held in Boston, USA, the interest on chitin and chitosan ...
Silva, Hélio S. R. Costa +2 more
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Síntese e caracterização de beads de quitosana comercial reticulados com glutaraldeído
, 2021 A quitosana e um polimero natural com propriedades interessantes para remocao de compostos orgânicos. O presente trabalho trata da preparacao e caracterizacao de beads de quitosana utilizando glutaraldeido (GLA) como agente reticulante, para serem ...
Maria Polyana Silva Oliveira +2 more
semanticscholar +1 more source