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Now showing items 1-10 of 24
Screening of Formulation Variables for the Preparation of Poly(epsilon-caprolactone) Nanocapsules Containing the Local Anesthetic Benzocaine
(Journal of Nanoscience and Nanotechnology, 2011-03-01) [Artigo]
In this work we describe the screening of four parameters in the preparation, by nanoprecipitation, of poly(epsilon-caprolactone) nanocapsules, used as a drug carrier system for the local anesthetic, benzocaine. A 2(4-1) ...
Cyclodextrin Inclusion Complexes Loaded in Particles as Drug Carrier Systems
(Current Topics In Medicinal Chemistry, 2014-02-01) [Resenha]
This mini-review paper does not consider classical work concerning the formation of inclusion complexes between pharmaceuticals and cyclodextrins. Instead, it highlights recent reports concerning the association of these ...
Chitosan and alginate biopolymer membranes for remediation of contaminated water with herbicides
(Journal of Environmental Management, 2013-12-15) [Artigo]
This study investigated the adsorption behavior of the herbicides diquat, difenzoquat and clomazone on biopolymer membranes prepared with alginate and chitosan (pristine and multi-layer model) for contaminated water ...
Evaluation of the Genotoxicity of Chitosan Nanoparticles for Use in Food Packaging Films
(Journal of Food Science, 2010-08-01) [Artigo]
The use of nanoparticles in food packaging has been proposed on the basis that it could improve protection of foods by, for example, reducing permeation of gases, minimizing odor loss, and increasing mechanical strength ...
Evaluation of Cyto- and Genotoxicity of Poly(lactide-co-glycolide) Nanoparticles
(Journal of Polymers and the Environment, 2011-03-01) [Artigo]
This work reports on an analysis of the cyto- and genotoxicity of poly(lactide-co-glycolide) polymer nanoparticles, in an attempt to evaluate their mutagenic effects. Fibroblast (3T3) and human lymphocyte cell cultures ...
Evaluation of the genotoxicity of cellulose nanofibers
(International Journal of Nanomedicine, 2012-01-01) [Artigo]
Background: Agricultural products and by products provide the primary materials for a variety of technological applications in diverse industrial sectors. Agro-industrial wastes, such as cotton and curaua fibers, are used ...
Controlled release system for ametryn using polymer microspheres: Preparation, characterization and release kinetics in water
(Journal of Hazardous Materials, 2011-02-28) [Artigo]
The purpose of this work was to develop a modified release system for the herbicide ametryn by encapsulating the active substance in biodegradable polymer microparticles produced using the polymers poly(hydroxybutyrate) ...
Caracterização estrutural das substâncias húmicas aquáticas extraídas dos rios itapanhaú e ribeira de iguape
(Química Nova, 2011-01-01) [Artigo]
The knowledge of the structure characteristic of the Organic Matter is important for the understanding of the natural process. In this context aquatic humic substances (principal fraction) were isolated from water sample ...
Paraquat-loaded alginate/chitosan nanoparticles: Preparation, characterization and soil sorption studies
(Journal of Hazardous Materials, 2011-06-15) [Artigo]
Agrochemicals are amongst the contaminants most widely encountered in surface and subterranean hydrological systems. They comprise a variety of molecules, with properties that confer differing degrees of persistence and ...
Poly(epsilon-caprolactone)nanocapsules as carrier systems for herbicides: Physico-chemical characterization and genotoxicity evaluation
(Journal of Hazardous Materials, 2012-09-15) [Artigo]
The toxicity of herbicides used in agriculture is influenced by their chemical stability, solubility, bioavailability, photodecomposition, and soil sorption. Possible solutions designed to minimize toxicity include the ...