Hydroxypropyl Methylcellulose
Mostrando 1-12 de 47 artigos, teses e dissertações.
-
1. Postharvest conservation of ‘Avalanche’ cut roses with hydroxypropyl methylcellulose-beeswax natural coating
RESUMO O uso de recobrimentos na pós-colheita de frutas e hortaliças é objeto de estudos há vários anos pela sua capacidade de prolongar a vida de prateleira de vegetais. No entanto, pouco se sabe acerca do uso destes recobrimentos na conservação pós-colheita de flores de corte. O objetivo deste trabalho foi avaliar o efeito de diferentes concentraç
Ciênc. agrotec.. Publicado em: 07/11/2019
-
2. Development and evaluation of multiparticulate biphasic system for the treatment of circadian diseases
Multiparticulate systems have biopharmaceutical advantages when compared to the monolithic systems, once they allow different patterns of drug release and can be used in different treatments. The aim of the present work was to develop a biphasic controlled release delivery system, using propranolol hydrochloride (PROP) that can be used for the treatment of c
Braz. J. Pharm. Sci.. Publicado em: 08/04/2019
-
3. Preparation and in vitro & in vivo evaluation of cephalexin matrix tablets
The purpose of the study is to develop cephalexin controlled-release matrix tablets by using lower proportions of release retardant polymer and to establish their in vitro & in vivo correlation. Tablets were compressed by incorporating polymers in a matrix form along with drug which prolong the drug release. Twelve formulations were prepared by mixing ethyl
Braz. J. Pharm. Sci.. Publicado em: 29/11/2018
-
4. Floating ability and drug release evaluation of gastroretentive microparticles system containing metronidazole obtained by spray drying
Abstract Gastroretentive floating microparticles were developed and evaluated for the controlled metronidazole delivery for treatment of gastric disease. Floating microparticles, varying in proportions of chitosan and hydroxypropyl methylcellulose or ethylcellulose, were obtained by spray drying. Floating microparticles were characterized by physicochemical
Braz. J. Pharm. Sci.. Publicado em: 20/04/2017
-
5. In vitro evaluation of sustained released matrix tablets containing ibuprofen: a model poorly water-soluble drug
ABSTRACT A matrix system was developed that releases ibuprofen (IB) over a 12-hour period and the influence of the polymer type and concentration on the release rate of the drug was evaluated. Tablets containing different concentrations of Carbopol (CP), hydroxypropyl methylcellulose (HPMC), or ethyl cellulose (EC) were prepared using direct compression and
Braz. J. Pharm. Sci.. Publicado em: 2016-12
-
6. Nanocompósito de polpa de mamão e nanopartículas de quitosana para aplicação em embalagens
Nanocomposite materials have been incorporated into biopolymers, (e.g. hydroxypropyl methylcellulose), to improve their physical and chemical properties and enable them to be applied in food packaging, especially for their biodegradable and renewable properties. With this addition, fruit puree has been incorporated into the films to confer nutritional proper
Quím. Nova. Publicado em: 2014-07
-
7. Evaluation of hard gelatin capsules and hydroxypropyl methylcellulose containing ampicillin
This study aims to develop and evaluate formulations containing ampicillin in capsules of gelatin and hydroxypropyl methylcellulose (HPMC). Two formulations (A and B) were developed. The final product quality was evaluated by testing for quality control and the results were in agreement with the Brazilian Pharmacopoeia. The formulations with HPMC capsules sh
Química Nova. Publicado em: 2012
-
8. Formulation and evaluation of glipizide floating-bioadhesive tablets
The purpose of this study was formulation and in vitro evaluation of floating-bioadhesive tablets to lengthen the stay of glipizide in its absorption area. Effervescent tablets were made using chitosan (CH), hydroxypropyl methylcellulose (HPMC), carbopolP934 (CP), polymethacrylic acid (PMA), citric acid, and sodium bicarbonate. Tablets with 5% effervescent b
Brazilian Archives of Biology and Technology. Publicado em: 2010-10
-
9. Associação da 3-0-metilquercetina com beta-ciclodextrina : avaliação da complexação e penetração cutânea / 3-O-methylquercetin association with ß-cyclodextrin : evaluation of complexation and skin permeation
No presente trabalho foi realizado o isolamento da 3-O-metilquercetina, a partir de produto seco do extrato de inflorescências de Achyrocline satureioides, e sua caracterização. Em etapa farmacotécnica, foi realizado o estudo da associação deste flavonóide com b-ciclodextrina, bem como testes preliminares de permeação cutânea das associações, inc
Publicado em: 2007
-
10. Fabrication of Modified Release Tablet Formulation of Metoprolol Succinate using Hydroxypropyl Methylcellulose and Xanthan Gum
The present investigation was undertaken to fabricate modified release tablet of metoprolol succinate using hydroxypropyl methylcellulose (HPMC) and xanthan gum as a matrixing agent. A 32 full factorial design was employed for the optimization of formulation. The percentage drug released at a given time (Y60, Y240 and Y720) and the time required for a given
Springer US.
-
11. Pupil size and reactivity following hydroxypropyl methylcellulose and sodium hyaluronate.
AIMS--A prospective randomised clinical trial was set up to compare the effect of hydroxypropyl methylcellulose (Ocucoat) and sodium hyaluronate (Healonid) on pupil size and reactivity following their use in cataract surgery. METHODS--Pupil measurements were recorded before and 6 weeks after surgery. RESULTS--There was no significant difference between the t
-
12. Effect of hydroxypropyl methylcellulose and hydrogenated castor oil on naproxen release from sustained-release tablets
The effect of the concentration of hydrophilic (hydroxypropyl methylcellulose [HPMC]) and hydrophobic (hydrogenated castor oil [HCO]) products, fillers (lactose and dibasic calcium phosphate), and buffers (sodium bicarbonate, calcium carbonate, and sodium citrate) on naproxen release rate was studied. Matrix tablets were prepared by double compression, andIn
Springer-Verlag.