Biopolymer
Mostrando 13-24 de 160 artigos, teses e dissertações.
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13. Cassava biopolymer polyamide hydrogel accelerates healing of induced skin woundsin rats
RESUMO O objetivo deste estudo foi avaliar macro e microscopicamente a cicatrização de feridas cutâneas induzidas em ratos, a partir da aplicação tópica do hidrogel de biopolímero de poliamido de mandioca. Trinta e dois ratos foram divididos em quatro grupos (n= 8): controle negativo, tratado com solução salina; controle positivo, com pomada comerci
Arq. Bras. Med. Vet. Zootec.. Publicado em: 14/06/2019
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14. Tapioca starch films reinforced with microcrystalline cellulose for potential food packaging application
Abstract This work is directed towards developing biodegradable films from biopolymer that is sustainable and environmentally friendly particularly tapioca starch (TPS) films. However, the usage of TPS films for food packaging application has been limited due to the poor mechanical, barrier and thermal properties. Microcrystalline cellulose (MCC) at differen
Food Sci. Technol. Publicado em: 16/05/2019
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15. A smart approach for delivery of aripiprazole via oro-soft palatal mucosal route for improved therapeutic efficacy
Effective management of schizophrenia, acute mania, mixed episodes associated with bipolar disorders, and depression can be managed with aripiprazole moiety. In the present research work an attempt was made to minimize the dose related side effects thus improving the quality life of the patients. A novel biopolymer was isolated from the fruits of Trachysperm
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
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16. Nanocomposite Films Based on Flaxseed Gum and Cellulose Nanocrystals
Flaxseed gum (FG)-based films were developed with the addition of glycerol as a plasticizer and glutaraldehyde as a crosslinking agent. HCl was added to improve crosslinking and decrease the hydrophilicity of the matrix. Different cellulose nanocrystal (CN) amounts were used as reinforcements in the optimum FG formulation. The crosslinking process at pH 3.5
Mat. Res.. Publicado em: 22/10/2018
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17. Comportamiento al creep de un polímero utilizado para impresión 3D
ABSTRACT In recent years, additive construction or 3D printing technology is being widely used for manufacturing goods. This construction procedure has and will have a great industrial impact. There are several 3D printing processes, and among of them the most known is called Fused Deposition Modeling (FDM). The objective of the present paper is oriented to
Matéria (Rio J.). Publicado em: 19/07/2018
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18. Water-uptake properties of a fish protein-based superabsorbent hydrogel chemically modified with ethanol
Abstract Hydrophilic polymers can form hydrogels, which are able to absorb and retain as much water as one hundred times their weight. Polymers based on natural products have been drawing attention since they are biocompatible, biodegradable and nontoxic. The aims of this study were to produce and to characterize a biopolymer with superabsorbent properties
Polímeros. Publicado em: 06/07/2018
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19. PREPARAÇÃO, CARACTERIZAÇÃO FÍSICO-QUÍMICA E LIBERAÇÃO CONTROLADA DE MICROPARTÍCULAS DE GALACTOMANANA CONTENDO ALANTOÍNA
In this work, the allantoin was encapsulated with galactomannan extruded from Delonyx regia, by the spray drying technique. The microparticles obtained were structurally characterized by infrared spectroscopy (IR), thermal analysis, scanning electron microscopy (SEM) and the controlled release profile was evaluated. The results of IR suggested the formation
Quím. Nova. Publicado em: 2018-05
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20. New technologies from the bioworld: selection of biopolymer-producing microalgae
Abstract Microalgae are studied because of their biotechnological potential. The growth of microalgae aims at obtaining natural compounds. Due to the large amount of accumulated polymer waste, one of the solutions is the use of biodegradable polymers. The objective of this work was to select biopolymer-producing microalgae and to study the cell growth phase
Polímeros. Publicado em: 2017-12
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21. Partial-hydrothermal hydrolysis is an effective way to recover bioactives from turmeric wastes
Abstract Partial-hydrothermal hydrolysis using pressurized hot water was applied in waste turmeric, derived from extraction processes that employed supercritical and pressurized fluids, as a sustainable alternative for the recovery of bioactive constituents from this material. The reaction products consisted of a liquid extract of fermentable sugars and a so
Food Sci. Technol. Publicado em: 26/10/2017
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22. Synthesis and Characterization of Hybrid Ni0.5Zn0.5Fe2O4@SiO2/chitosan
In this work we evaluate the use of silane agent 3-aminopropyltrimethoxysilane and biopolymer chitosan to functionalize ferrites Ni0.5Zn0.5Fe2O4 using the solvent evaporation method aiming at obtaining hybrid material Ni0.5Zn0.5Fe2O4@SiO2/chitosan for use as a biosensor. The nanoparticles before and after the functionalization showed the major phase Ni0.5Zn0
Mat. Res.. Publicado em: 24/08/2017
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23. Analysis of Water Barrier, Mechanical and Thermal Properties of Nanocoposites Based on Cassava Starch and Natural Clay or Modified by Anionic Exchange
Biopolymer films have several industrial applications because they are environmentally sustainable. Cassava starch is a biopolymer that is easily available, but has limitations: it is hydrophilic, poorly resistant and degradable. The improvement of these properties was proposed in this research from the use of bentonite clay (BT) as a filling material. The c
Mat. Res.. Publicado em: 11/05/2017
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24. A new cement slurry modified with chitosan/alginate interpenetrating networks and hydroxyapatite - structural characteristics after long-term contact with hyper-saline produced water from oil well operations
ABSTRACT Oil is an important source of energy, mainly in developing countries. Important research has been conducted to find cementing procedures that guarantee safe and cost-effective oil exploration below pre-salt layers. This work aimed to make a new cement paste with cement, seawater, silica, biopolymers (chitosan and sodium alginate) and hydroxyapatite
Matéria (Rio J.). Publicado em: 10/04/2017