Academic literature on the topic 'Excipiente'
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Journal articles on the topic "Excipiente"
DO NASCIMENTO, MARINA, BRUNA GALDORFINI CHIARI ANDRÉO, and THALITA PEDRONI FORMARIZ PILON. "Padronização de excipientes para cápsulas gelatinosas duras contendo o extrato seco de Valeriana officinalis." Revista Brasileira Multidisciplinar 18, no. 2 (July 10, 2015): 167. http://dx.doi.org/10.25061/2527-2675/rebram/2015.v18i2.334.
Full textOrtega Inclán, M. N., P. Hernanz Hernanz, T. Sainza Rúa, and P. Seguido Aliaga. "Reacción alérgica al excipiente de un genérico." Atención Primaria 28, no. 3 (2001): 212–13. http://dx.doi.org/10.1016/s0212-6567(01)78935-4.
Full textRoth Damas, Patricia, Mara Sempere Manuel, Cristina Vivas Maiques, and Vicente Palop Larrea. "Hipersensibilidad al aroma de melocotón como excipiente." Atención Primaria 46, no. 1 (January 2014): 50–51. http://dx.doi.org/10.1016/j.aprim.2013.04.012.
Full textAmaral, Pedro Augusto, Maiara Rodrigues Federeci, and Jéssica Laira Ulian Candido Sant'ana. "ANÁLISE DE EXCIPIENTES UTILIZADOS EM CÁPSULAS PREPARADAS EM FARMÁCIAS MAGISTRAIS." Revista Brasileira Multidisciplinar 19, no. 1 (January 18, 2016): 24. http://dx.doi.org/10.25061/2527-2675/rebram/2016.v19i1.365.
Full textCallero, Ariel, and Lidon Martin-Fernandez. "Sospecha de alergia a benzodiazepinas: ¿excipiente o principio activo?" Atención Primaria 48, no. 6 (June 2016): 423–24. http://dx.doi.org/10.1016/j.aprim.2015.10.002.
Full textBarrientos, Marcia Otto, Fernanda Cristina Figueira Teixeira, and Roberto Paulo Correia de Araújo. "Presença de lactose em medicamentos isentos de prescrição." Revista de Ciências Médicas e Biológicas 17, no. 3 (December 18, 2018): 337. http://dx.doi.org/10.9771/cmbio.v17i3.28671.
Full textReyes Balaguer, Javier, Amparo Melchor Penella, and M. Ángeles Guzmán Roa. "Consideraciones a la hipersensibilidad al aroma de melocotón como excipiente." Atención Primaria 47, no. 7 (August 2015): 471–72. http://dx.doi.org/10.1016/j.aprim.2015.02.004.
Full textPagnano, Leonardo de Oliveira, Silvana Martinez Baraldi-Artoni, Maria Rita Pacheco, Edanir dos Santos, Daniela Oliveira, and Jeffrey Frederico Lui. "Morfometria de fibroblastos e fibrócitos durante o processo cicatricial na pele de coelhos da raça Nova Zelândia Branco tratados com calêndula." Ciência Rural 38, no. 6 (September 2008): 1662–66. http://dx.doi.org/10.1590/s0103-84782008000600026.
Full textBin, Liew Kai, Anand Gaurav, and Uttam Kumar Mandal. "A REVIEW ON CO-PROCESSED EXCIPIENTS: CURRENT AND FUTURE TREND OF EXCIPIENT TECHNOLOGY." International Journal of Pharmacy and Pharmaceutical Sciences 11, no. 1 (January 1, 2019): 1. http://dx.doi.org/10.22159/ijpps.2019v11i1.29265.
Full textSilveira, Alexsander Augusto da, Amanda Evely Teixeira Pereira, Ikaro Silva de Oliveira, Flávio Silva de Carvalho, Adibe Georges Khouri, and Álvaro Paulo Silva Souza. "Polimorfismo de fármacos no controle de qualidade de medicamentos: uma revisão bibliográfica." Revista Eletrônica Acervo Saúde, no. 29 (August 9, 2019): e791. http://dx.doi.org/10.25248/reas.e791.2019.
Full textDissertations / Theses on the topic "Excipiente"
Pinto, Mônia Aparecida Lemos. "Estudos termoanalíticos da carbamazepina: hidratação/desidratação, decomposição térmica e interações com excipientes empregados em formulações farmacêuticas." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/75/75135/tde-01112012-144158/.
Full textCarbamazepine (5H-dibenz[b, f]azepina-5-carboxamida) is a anticonvulsivant frequently used in Brazil and many other countries. It presents four polymorphic forms and one di-hydrate, which is pharmacologically less active. In the present work a study of the possibility of recovering the hydrated form by heating is presented. Thus a thermal analytical investigation of the thermal behavior of the spontaneously hydrated carbamazepine sample was performed by TG/DTG-DTA and DSC in dynamic atmospheres of air and nitrogen, which evidenced the spontaneous hydration of the pharmaceutical leads to a non-stoichiometric Form III 1,5 hydrate. These water molecules seems to be weakly bonded to the solid. After dehydration the anhydrous form III converts to the Form I, that melts and decomposes in a single event, releasing isocyanic acid, according to the Evolved Gas Analysis, by thermogravimetry coupled to FTIR. Differential Scanning Calorimetry data reveled that the Form III melts and crystallizes in Form I, and subsequent cooling-heating cycles only present the Form I, during crystallization. Kinetic studies of solid state decomposition showed that there is any change in the substance by the water elimination by heating up to 120 °C. Activation energies of 98 ± 2 e 93 ± 2 kJ mol-1, respectively were found for the hydrated and heated samples, as well as similar activation energy vs. conversion factor profiles could be observed for these samples. Investigation on the drug-excipient interactions for the hydrated carbamazepine with methylparaben, hydroxypropylmethylcellulose (HPMC) and polyvinylpirrolidone (PVP), reveled interactions by changes in the polymorphic behavior of the pharmaceutical. Any interactions were noticed with starch, microcrystalline cellulose, colloidal silica, saccharine, carboxymethylcellulose (CMC) and magnesium stearate.
Sarrate, Arjona Rocío. "Obtención por atomización y evaluación de agregados esféricos. Un nuevo excipiente co-procesado para compresión directa." Doctoral thesis, Universitat de Barcelona, 2017. http://hdl.handle.net/10803/404879.
Full textWith the advancement of tablet manufacturing process, the demand of excipients with improved functionalities, mainly in terms of flow and compression properties, has increased. Moreover, due to the growing appreciation of the role of the excipients in tablets and the greater tendency to manufacture them, especially by direct compression, due to the advantages it brings, both in economic and process terms. Coprocessed excipients are a mixture of two or more existing excipients at subparticle level, that offer substantial benefits of the incorporated excipients and minimize their drawbacks. They are designed to physically modify some of their properties in a manner unattainable by simple physical mixing without significant chemical change. The objective of this study was to prepare and evaluate a novel spray dried co-processed excipient using a mixture of maltose and maize starch to be used as a directly compressible excipient. To achieve this purpose, the selection of the starting materials has been made according to their ability as filler/binder in tableting and according to their solubility in water. After the study of the modification of the morphology and particle size of the starting pharmaceutical excipients by spray drying, 40 binary powder mixtures were prepared by co-spray drying according to the obtained results. In terms of particle level, particles were evaluated for particle size, particle size distribution and morphology, to analyze the incorporation of one excipient into the particle structure of the other. And in terms of bulk level, it was evaluated the compaction ability of the powders. With these results, the final composition was established: 75 % of maltose type II and 25 % of maize starch. With an experimental design of the process of co-spray drying, it was evaluated the significant factors with the studied responses. The prototype of the co-processed excipient was compared with the physical mixture of both starting materials. Relevant analytical methods, such X ray diffraction, IR spectroscopy, DSC and H1 NMR among others, showed the absence of chemical change. Moreover, the study of the rheological and compaction properties proved that the prototype of the co-processed excipient was able to improve the desired properties for a direct compression excipient, resulting in performance enhancement about this.
Viscasillas, Clerch Anna. "Aportación al diseño de un nuevo excipiente tipo "coprocessed products" para compresión directa." Doctoral thesis, Universitat de Barcelona, 2008. http://hdl.handle.net/10803/1616.
Full textLa tecnología de la compresión directa presenta, entre otras ventajas, una simplificación de las fases operativas y en consecuencia ventajas económicas, cuando se aplica a nivel industrial. La elección de los diluyentes por compresión directa considera las características intrínsecas de los polvos (tamaño de partícula, forma, densidad aparente, y solubilidad) como las características necesarias para la elaboración de formas compactas. Una de las líneas de investigación actuales en este campo, se dirige hacia el desarrollo de excipientes tecnoprocesados, referenciados en la bibliografía anglosajona como "multipurpose excipients", o "co-processed excipients". Técnicamente, estos productos son granulados constituidos por mezclas de distintos componentes obtenidos por diferentes técnicas de granulación.
La primera etapa en el diseño de un nuevo excipiente tecnoprocesado es la de determinar la composición cuali y quantitativa de sus componentes. Se propone la utilización de asociaciones fosfatodicálcico dihidratado/celulosa microcristalina ya que permiten compensar las deficiencias de compresibilidad del fosfato y las de capacidad de flujo de la celulosa y constituir composiciones "sinérgicas" que permitan conseguir las especificaciones requeridas y exigibles a un buen excipiente para compresión directa. En este sentido, se estudian en una primera fase, el comportamiento de diferentes mezclas físicas se caracterizan en cada caso determinando: ángulo de reposo, velocidad de deslizamiento e índices de Hausner y de Compresibilitat como parámetros reológicos. Se comprimen las diferentes mezclas, se estudia el ciclo de Heckel para cada una de ellas y por último se determinan los parámetros farmacotécnicos de los comprimidos obtenidos con las mismas. En paralelo se estudian las mezclas físicas anteriormente descritas sometidas a un proceso de granulación por vía húmeda con el objetivo de mejorar las características de las mismas. Estos granulados constituyen los primeros prototipos del proyecto.
Este estudio preliminar permite seleccionar una serie de granulados con características reológicas adecuadas (elevada resistencia a la rotura, rápida disgregación y baja friabilidad) y que muestran su aptitud para la compresión en un amplio intervalo de fuerzas.
En el proceso de obtención del prototipo de excipiente tecnoprocesado, a través de granulación húmeda, se involucran diferentes variables La utilización de métodos estadísticos de diseño experimental permiten optimizar el proceso.
A partir de estos resultados se escogen las variables para el diseño estadístico de experiencias. Se optimizan los granulados elaborados en los estudios preliminares y obtenemos una primera propuesta de excipiente tecnoprocesado.
Una vez determinadas las condiciones óptimas para el proceso de elaboración del excipiente tecnoprocesado, se escogen los dos lotes que se acercan más a las mismas con objeto estudiar el comportamiento del mismo cuando se le incorpora un trazador, en este caso se escoge la hidroclorotiazida como modelo de principio activo poco soluble en agua.
The aim of this study is the design of a coprocessed excipient for direct compression, free of lactose, because of the handicap that lactose supposes with its presence in most tablet formulations.
This excipient must have furthermore, a fast disintegration for tablets containing antiinflammatory, analgesic and antihypertensives drugs that require a fast liberation so that this phase of the LADME does not constitute a limitation for the attainment of a rapid therapeutic action at systemic level.
The potential advantages of tablet production by direct compaction are well known. The most striking feature of direct compaction is its apparent simplicity.
The main aim of co-processing is to obtain a product with added value related to the functionality/price ratio. Development of co-processed directly compressible adjuvant starts with the selection of the excipients to be combined, their targeted proportion, and selection of preparation method to get an optimized product with desired physico-chemical parameters.
The used excipients are dicalciumphosphate and microcrystalline cellulose in a proportion of 75-25% respectively. In the process of obtaining the coprocessed excipient prototype, through wet granulation, involves different variables. The use of statistical methods for experimental design allows the optimization of the process.
Once determined the optimal conditions for the elaboration process of the coprocessed excipient, two lots are chosen, both with the best object of study behaviours. Then, the drug is added, in this case, the hydrochlorothiazide as a model of a poorly hydrosoluble water drug.
Recife, Ana Cristina Diniz [UNESP]. "Amido retrogradado como excipiente de comprimidos para liberação controlada de fármacos: obtenção e caracterização." Universidade Estadual Paulista (UNESP), 2007. http://hdl.handle.net/11449/122089.
Full textAs matrizes hidrofílicas destacam-se como sistemas sólidos para a liberação controlada de fármacos destinados à via oral de administração de medicamentos, devido à relativa facilidade de processamento, possibilidade de incorporação de elevadas doses de fármaco e obtenção de perfis de liberação reprodutíveis. O amido resistente tipo 3 (AR3) e a pectina (P) são polímeros resistentes à ação das enzimas digestivas, sendo seletivamente degradados pela microbiota colônica, o que os tornam potenciais candidatos para a obtenção de sistemas de liberação controlada de fármacos. Nesse trabalho, o AR3 foi obtido através da retrogradação do amido por dois métodos diferentes: Método 1 (M1) – armazenamento sob resfriamento, por 8 dias (4°C) e Método 2 (M2) – armazenamento por 16 dias em ciclos alternados de temperatura (4°C e 30°C, 2 dias em cada temperatura). As propriedades físico-químicas dos materiais retrogradados (cristalinidade, comportamento térmico, intumescimento e porosidade) foram avaliadas e o conjunto de resultados evidenciou modificações estruturais promovidas pelo processo de retrogradação. As propriedades micromeríticas desses materiais (distribuição de tamanho, forma, densidade e fluxo) foram também avaliadas e mostraram-se favoráveis ao processo de compressão. O desempenho dos materiais como excipiente de comprimidos destinados à liberação controlada de fármacos foi avaliado através do ensaio de liberação in vitro do diclofenaco de sódio, em meios com diferentes valores de pH (1,2 e 7,4). A influência da incorporação da pectina aos sistemas no controle das taxas de liberação do fármaco foi avaliada. Os perfis de liberação obtidos demonstraram um efetivo controle das taxas de liberação do fármaco em meio ácido, visto que, em 120 min, os comprimidos obtidos por M1 ou M2 (20 e 40%) liberaram de 42% a 49,49% do fármaco, enquanto os comprimidos obtidos com APR e APM liberaram..
Hydrophilic matrices represent important solid systems for controlled drug delivery intended to oral administration of drugs, because of the relative ease of processing, possibility of incorporating large amounts of drug, and obtaining reproducible release profiles. Resistant starch type 3 (AR3) and pectin (P) are polymers resistant to the action of digestive enzymes and are selectively degraded by colonic microbiota, making them potential candidates for drug delivery systems. In this work, retrograded starch (AR3) was prepared by starch retrogradation by two different methods: Method 1 (M1) - cooling for 8 days at 4° C and Method 2 (M2) - storage for 16 days in alternating temperature cycles (4° C and 30° C, 2 days at each temperature). The physico-chemical properties of the retrograded materials (crystallinity, thermal behavior, swelling and porosity) were evaluated and the results showed structural changes caused by the retrogradation process. Micromeritic properties of these materials (size distribution, shape, density and flow) were also evaluated and showed to be suitable to the compression process. The performance of the materials as tablet excipient intended for controlled drug release was evaluated through the in vitro release of sodium diclofenac in media with different pH values (1.2 and 7.4). The influence of the incorporation of pectin to the systems in controlling the drug release rates was evaluated. The release profiles of all obtained tablets demonstrated effective control of drug release in acid media since tablets prepared with M1 or M2 released from 42 to 49% of drug. Tablets prepared with APR and APM released about 34.5% and 22.8%, respectively. In enteric media, the tablets obtained by M1 or M2 (20 and 40%) showed an increased rate of drug release, so that the t80% occurred at approximately 60 min, while for the tablets obtained with AA this time was of approximately 120 min. The tablets obtained with APR and APM ...
Recife, Ana Cristina Diniz. "Amido retrogradado como excipiente de comprimidos para liberação controlada de fármacos: obtenção e caracterização /." Araraquara, 2007. http://hdl.handle.net/11449/122089.
Full textCoorientador: Beatriz Stringhetti Ferreira Cury
Banca: Marco Vinícius Chaud
Banca: Ana Dóris de Castro
Resumo: As matrizes hidrofílicas destacam-se como sistemas sólidos para a liberação controlada de fármacos destinados à via oral de administração de medicamentos, devido à relativa facilidade de processamento, possibilidade de incorporação de elevadas doses de fármaco e obtenção de perfis de liberação reprodutíveis. O amido resistente tipo 3 (AR3) e a pectina (P) são polímeros resistentes à ação das enzimas digestivas, sendo seletivamente degradados pela microbiota colônica, o que os tornam potenciais candidatos para a obtenção de sistemas de liberação controlada de fármacos. Nesse trabalho, o AR3 foi obtido através da retrogradação do amido por dois métodos diferentes: Método 1 (M1) - armazenamento sob resfriamento, por 8 dias (4°C) e Método 2 (M2) - armazenamento por 16 dias em ciclos alternados de temperatura (4°C e 30°C, 2 dias em cada temperatura). As propriedades físico-químicas dos materiais retrogradados (cristalinidade, comportamento térmico, intumescimento e porosidade) foram avaliadas e o conjunto de resultados evidenciou modificações estruturais promovidas pelo processo de retrogradação. As propriedades micromeríticas desses materiais (distribuição de tamanho, forma, densidade e fluxo) foram também avaliadas e mostraram-se favoráveis ao processo de compressão. O desempenho dos materiais como excipiente de comprimidos destinados à liberação controlada de fármacos foi avaliado através do ensaio de liberação in vitro do diclofenaco de sódio, em meios com diferentes valores de pH (1,2 e 7,4). A influência da incorporação da pectina aos sistemas no controle das taxas de liberação do fármaco foi avaliada. Os perfis de liberação obtidos demonstraram um efetivo controle das taxas de liberação do fármaco em meio ácido, visto que, em 120 min, os comprimidos obtidos por M1 ou M2 (20 e 40%) liberaram de 42% a 49,49% do fármaco, enquanto os comprimidos obtidos com APR e APM liberaram..
Abstract: Hydrophilic matrices represent important solid systems for controlled drug delivery intended to oral administration of drugs, because of the relative ease of processing, possibility of incorporating large amounts of drug, and obtaining reproducible release profiles. Resistant starch type 3 (AR3) and pectin (P) are polymers resistant to the action of digestive enzymes and are selectively degraded by colonic microbiota, making them potential candidates for drug delivery systems. In this work, retrograded starch (AR3) was prepared by starch retrogradation by two different methods: Method 1 (M1) - cooling for 8 days at 4° C and Method 2 (M2) - storage for 16 days in alternating temperature cycles (4° C and 30° C, 2 days at each temperature). The physico-chemical properties of the retrograded materials (crystallinity, thermal behavior, swelling and porosity) were evaluated and the results showed structural changes caused by the retrogradation process. Micromeritic properties of these materials (size distribution, shape, density and flow) were also evaluated and showed to be suitable to the compression process. The performance of the materials as tablet excipient intended for controlled drug release was evaluated through the in vitro release of sodium diclofenac in media with different pH values (1.2 and 7.4). The influence of the incorporation of pectin to the systems in controlling the drug release rates was evaluated. The release profiles of all obtained tablets demonstrated effective control of drug release in acid media since tablets prepared with M1 or M2 released from 42 to 49% of drug. Tablets prepared with APR and APM released about 34.5% and 22.8%, respectively. In enteric media, the tablets obtained by M1 or M2 (20 and 40%) showed an increased rate of drug release, so that the t80% occurred at approximately 60 min, while for the tablets obtained with AA this time was of approximately 120 min. The tablets obtained with APR and APM ...
Mestre
Daudt, Renata Moschini. "Estudo das propriedades do amido de pinhão visando a sua utilização como excipiente farmacêutico." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/56595.
Full textStarch is a natural polymer widely used in the pharmaceutical industry for its versatility and availability, and also because it is a renewable product. Pinhão is the seed of Araucaria angustifolia, the more economically important conifer species native in Brazil, and is a good source of starch (about 36 %). Some new uses of pinhão starch can contribute to preserve this specie by using a product that very often left at the end of season and, in general, is simply used as animal feed. The purpose of this study was characterizing an alternative source of starch from pinhão to use as pharmaceutical excipient. Starch extraction method was evaluated using native and cooked pinhão in autoclave at 120 ºC for 15 minutes. The products obtained were characterized considering flow properties, by determining the angle of repose, bulk and tapped density, Carr index and Hausner ratio, moisture content, pH, solubility in cold water, particle size and size distribution, morphological characteristics by optical microscopy with and without polarized light and scanning electron microscopy (SEM), phenolic compounds, colorimetric evaluation, X-ray diffraction and thermal properties through gelatinization temperature and enthalpy. For comparison, the same parameters were evaluated in a sample of pharmacist commercial corn starch. Results showed that native pinhão starch (NPS) was effective, since the starch content found was 94,53 ± 0.13 % on dry basis (d.b.). Cooked pinhão starch (CPS) showed values of yield extraction and starch content much lower than NPS indicating lower extraction efficiency. The different starches differ of particle size, color, phenolic presence, crystallinity, morphology and solubility. CPS sample showed a higher particle size with a wider size distribution and, consequently, granules size less homogeneous than NPS and PCS, which were similar. NPS granule shape is more rounded than PCS, whereas CPS, with larger granules, showed very irregular shape. NPS gelatinization temperature and enthalpy are lower than PCS, probably due its lower amylose content. NPS and PCS showed a semicrystalline structure through X-ray diffraction patters and CPS had amorphous characteristics, as expected for a pre-gelatinized starch. In addition, CPS had a darker color due the presence of phenolics compounds which migrates from coat to seed during cooking. Flow properties of powders were similar, whereas when evaluated through angle of repose, NPS and CPS samples were classified as acceptable flow and PCS had a poor flow. Moreover, when evaluated according to Carr index and Hausner ratio PCS and CPS were classified as acceptable and NPS as poor flow. CPS showed an improvement in solubility, which was classified as slightly soluble while NPS and PCS were classified as very low soluble. NPS pH was close to neutrality while PCS and CPS were considered as weakly acid and the moisture content from pinhão starches (NPS and CPS) were smaller than commercial corn starch. Despite the differences observed, native pinhão starch is similar of corn starch and could be used as pharmaceutical excipient.
Cano, Casas Francesc. "Aportaciones al desarrollo preclínico de un medicamento oncológico infantil con excipiente o soporte textil." Doctoral thesis, TDX (Tesis Doctorals en Xarxa), 2020. http://hdl.handle.net/10803/671788.
Full textEl mundo de los textiles de técnicos está presente cada día en más sectores. En el trabajo presentado se ha mostrado una nueva faceta de los materiales textiles: los textiles como excipiente de medicamento. Es conocido que la tecnología de electrohilatura ha abierto un abanico de posibilidades en el sector de los textiles de uso médico. Sin embargo, el entorno y los requisitos del sector farmacéutico hacen que la implementación de cualquier nuevo producto sea un trabajo largo y costoso. Este trabajo se enmarca dentro de un proyecto de desarrollo de un nuevo medicamento de uso oncológico tanto adulto como pediátrico. El fármaco que se desarrolla usa como excipiente un no tejido formado con nanofibras elaboradas por la técnica de electrohilatura. Durante el proceso de formación del no tejido se integra el principio activo (API) en la estructura. De este modo, se produce un fármaco muy eficaz para el uso al que va destinado. El presente trabajo se centra en buscar soluciones que ayuden al desarrollo de este fármaco mediante la adecuación de la producción textil de nanofibras al nivel de calidad requerido para la producción de un fármaco destinado a ser implantado dentro de una persona. Por este motivo, se ha realizado una búsqueda en el estado actual de la técnica de las tecnologías de producción de nanofibras, con objeto de asegurar el proceso de producción y escalado en una futura implementación en el desarrollo del producto a nivel de comercial. Bajo un punto de vista de desarrollo, se ha analizado el modo de deposición del haz de nanofibras en el colector. En este apartado se han desarrollado conceptos teóricos de naturaleza textil como son: título de fibra, velocidad de deposición, estiraje total y de polímero adaptados a la técnica de electrohilatura. Con estos desarrollos se podrán realizar nuevos estudios que incluyan estas variables para conocer en profundidad la influencia de estos en la estructura de las fibras y sus propiedades, tal y como sucede con las fibras producidas por las técnicas convencionales de extrusión de filamentos textiles. Paralelamente, se ha realizado un análisis con su correspondiente validación mediante modelización por elementos finitos (FEM) del campo electroestático en el proceso de electrohilatura. Gracias a este análisis, se ha conocido la naturaleza de las fuentes de perturbación del haz de electrohilatura que afectan la homogeneidad y por tanto la calidad del no tejido generado. Fruto de los conocimientos adquiridos con el análisis FEM, se ha desarrollado un elemento que permite garantizar la homogeneidad de las fibras en todo el ancho de producción del no tejido, permitiendo de este modo maximizar la calidad y la superficie de producción.
Guimarães, Thiago Frances. "High shear melt granulation como alternativa de processo para granulação de artesunato." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/60/60137/tde-13122016-093419/.
Full textThe modernization of the equipment for wet granulation has enabled the development of different techniques from the traditional method. Among the techniques developed, hot - melt granulation eliminates the use of solvents and reduces the process time. The present work aimed to study the process of granulation by solidification of molten materials using a high-shear mixer/granulator (HSMG) and evaluate the influence of process parameters on particle size distribution, flowability and tableting characteristics of material produced. The artesunate was chosen to carry out the granulation study due to its high degree of crystallinity and chemical instability. A drug-excipient compatibility study was performed by DSC, FTIR combined with multivariate statistical techniques (PCA and HCA) and high performance liquid chromatography. The HSMG parameters investigated were the type of diluent, the amount of PEG 6000 added, massification time, the mixer speed and chopper speed, using a fractional factorial experimental design 25-1. Density, flow properties and particle size distribution of the granules were evaluated. The granular mannitol showed moisture content < 1% and span of 1.690. Granular lactose showed moisture content > 2% and span of 2.814. The mixer and chopper speed did not show significant effects on granule characteristics. Mannitol was chosen as more suitable diluent for artesunate. HSMG was carried out with the mixer speed 100 rpm and chopper speed 1000 rpm according to a full factorial experimental design 32 in duplicate to study formulation variables: artesunate/mannitol proportion and the amount of PEG 6000 added. The amount of PEG 6000 added contributed to increase the granules density (bulk and tapped), mean particle size and also to reduce friability, formation of fine particles and span. The granules compressional profile was determined graphically through force-time and force-displacement plots showing differences in work of compaction, compression and elastic recovery. The disintegration time of tablets obtained increased with the amount of artesunate in formulation while the tensile strength decreased. The amount of PEG 6000 increased hardness and decreased disintegration time. To the duplicate samples were added 2% of croscarmellose and a decrease of 70% in disintegration time of tablets was noted and also compression process become more uniform without changing other tablet features as mechanical resistance, compaction, elastic recovery and formulation plasticity.
Silva, Paulo César Dantas da. "Estudo termoanalítico de compatibilidade fármaco-excipiente e de estabilidade entre ácido lipóico e adjuvantes tecnológicos." Universidade Estadual da Paraíba, 2014. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2371.
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Lipoic acid (LA) is an endogenous and exogenous-occurring antioxidant that acts as an essent ial cofactor in four mult ienzymat ic complexes: α-ketoglutarate dehydrogenase, pyruvate dehydrogenase, α-ketoacid dehydrogenase and the glycine decarboxylase complex. Four therapeutic properties of this molecule have been widely studied: the ability to chelate metal ions such as Cd2+, Fe3+, Cu2+ and Zn2+, retain reactive oxygen species (ROS), regenerate endogenous antioxidants such as glutathione, besides participation in the repair of other antioxidant systems. The literature reports that LA showed promising results both in preclinical and clinical trials for the treatment of diseases such as arteriosclerosis, heavy metal poisoning, diabetes, among other neurodegenerative diseases. Thus, based on the therapeutic potential, our aim was to perform a physicochemical characterization and develop a study of drug-excipient compatibility, aiming at the rational development of a pharmaceutical product. The thermal behavior of lipoic acid was evaluated by differential scanning calorimetry (DSC) and thermogravimetry (TG), and its characterization was performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and FTIR spectroscopy. Initially a characterization study of physico-chemical properties of commercial batches of raw material was performed with various analytical techniques such as thermal analysis, scanning electron microscopy, FTIR spectroscopy and X-ray diffraction. A pre-formulation study was conducted to evaluate the compatibility of lipoic acid with pharmaceutical excipients, and a prototype formulation for a solid dosage form of lipoic acid has been proposed. Based on the results obtained, it was possible to characterize LA as a crystalline solid with uneven shapes and sizes and low melting point. The compatibility study showed that LA is incompatible with the following excipients: lactose, magnesium stearate and polyvinyl pyrrolidone (PVPK30). A formulation with compatible excipients was prepared and then its stability was evaluated and compared to the drug by isothermal kinetic methods. The results of the stability study were quite promising, in which the developed formulation preserved the physicochemical characteristics and increased the stability of LA. Considering these results, we can conclude that the knowledge of the physico-chemical properties of lipoic acid in different commercial batches allow the rational use of this drug during the development of new products, in order to ensure a new formulation with the quality control and stabilit y parameters well-defined, and thus complement drug therapies for various diseases for which is indicated.
O ácido lipóico (AL) é um antioxidante de ocorrência endógena e exógena que atua como um cofator essencial em complexos multienzimáticos como: α-cetoglutarato desidrogenase, piruvato desidrogenase, complexo α-cetoácido desidrogenase e o complexo glicina descarboxilase. Quatro propriedades terapêuticas desta molécula já foram bastante estudadas: capacidade de quelar íons metálicos como: Cd 2+ , Fe 3+ , Cu 2+ e Zn 2+ , reter espécies reativas ao oxigênio (ERO), regenerar antioxidantes endógenos, como a glutationa, além da participação no reparo de outros sistemas antioxidantes. A literatura relata que o AL apresentou resultados promissores, tanto em ensaios pré-clínicos como clínicos para o tratamento de patologias como arteriosclerose, intoxicação por metais pesados, diabetes, doenças neurodegerativas dentre outras. Assim, com base no potencial terapêutico, o nosso objetivo foi realizar uma caracterização físico-química e desenvolver um estudo de compatibilidade fármacoexcipiente, visando ao desenvolvimento racional de um produto farmacêutico. Foi avaliado o comportamento térmico do ácido lipóico, através de métodos térmicos e não-térmicos. Inicialmente, foi realizado um estudo de caracterização das propriedades físico-química de lotes comerciais da matéria-prima, através de diversas técnicas analíticas como análise térmica, microscopia eletrônica de varredura (MEV), espectroscopia na região do infravermelho com transformada de Fourier (FTIR) e difração de raios-x (DRX). Um estudo de pré-formulação foi realizado para avaliar a compatibilidade do ácido lipóico com excipientes farmacêuticos e, posteriormente, o fármaco foi utilizado em uma formulação protótipo para uma forma farmacêutica sólida. Com base nos resultados obtidos, foi possível caracterizar o AL como um sólido de cristais de tamanhos e formas desiguais, de baixo ponto de fusão. Já o estudo de compatibilidade mostrou que o AL foi incompatível com os seguintes excipientes: lactose, estearato de magnésio e polivinilpirrolidona (PVP-K30). No entanto, com lactose, amido, celulose, dióxido de silício coloidal e talco foi elaborada uma formulação e em seguida avaliada a sua estabilidade e comparada a do fármaco por métodos cinéticos isotérmicos. Os resultados do estudo de estabilidade foram bastante promissores, de forma que a formulação desenvolvida preservou as características físico-químicas e aumentou a estabilidade do AL. Considerando os resultados obtidos, pode-se concluir que o conhecimento das propriedades físico-químicas de fármacos em diferentes lotes comerciais nos permite a utilização racional do ativo durante o desenvolvimento de novos produtos, de modo a garantir uma nova formulação com os parâmetros de controle de qualidade e estabilidade bem definidos e assim, complementar terapias medicamentosas para as diversas patologias.
Soares, Daiane dos Santos. "Avalia??o da argila atapulgita para potencial uso como excipiente farmac?utico em formas s?lidas." Universidade Federal do Rio Grande do Norte, 2013. http://repositorio.ufrn.br:8080/jspui/handle/123456789/13492.
Full textClays are natural materials that have great potential for use as excipients for solid dosage forms. Palygorskite is a type of clay that has hydrophilic properties as well as a large surface area, which could contribute to the dissolution of drugs. Thus, the present study aims to evaluate the use of palygorskite clay, from Piaui (Northeast region of Brazil), as a pharmaceutical excipient for solid dosage forms, using rifampicin and isoniazid as the model drugs. The former is a poorly soluble drug often associated with isoniazid for tuberculosis treatment. Palygorskite was characterized by X-ray diffraction (XRD), X-ray fluorescence (XRF), particle size, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and specific surface area (BET). The rheological and technological properties of palygorskite were determined and compared to those of talc, magnesium stearate and Aersosil 200. Mixtures between drugs and palygorskite were analyzed by differential scanning calorimetry (DSC), thermogravimetric analysis (TG) combined with thermal analysis (DTA) and Fourier Transform Infrared Spectroscopy (FT-IR), where the results were compared with those of the individual compounds. In addition, dissolution studies of solid dispersions and capsules containing the drugs, mixed with either palygorskite or a mixture of talc and magnesium stearate, were performed. The results showed that palygorskite has small particles with a high surface area. Its rheological characteristics were better than those of others commonly used glidants and lubricants. There was no interaction between palygorskite and the drugs (rifampicin and isoniazid). Among the dispersions studied, the mixture with palygorskite (5%) showed the highest drug dissolution when compared to other excipients. The dissolution of the rifampicin capsules containing palygosrkite was faster in higher concentrations. However, these differences were statistically different only in the first minutes of the dissolution experiment. The dissolution profile of isoniazid was also statistically different on the initial part of the experiment. The formulations prepared with isoniazid and palygorskite showed higher drug dissolution, but it was in descending order of concentration. According to these results, the palygorskite clay used in this study has great potential for application as an excipient for solid dosage forms
Argilas s?o materiais naturais, com baixa toxicidade e com potencial para atuar como excipiente. A atapulgita ? uma argila com caracter?stica hidrof?lica e grande ?rea superficial. Assim, este trabalho tem por objetivo avaliar o uso da atapulgita como excipiente farmac?utico em formas s?lidas, utilizando a rifampicina e a isoniazida como f?rmacos-modelo. A atapulgita ? proveniente do Estado do Piau?, Nordeste, Brasil. A rifampicina ? um f?rmaco de baixa solubilidade frequentemente associado ? isoniazida para o tratamento da tuberculose. Inicialmente a atapulgita foi caracterizada por difra??o de raios-X (DRX), fluoresc?ncia de raios-X (FRX), an?lise granulom?trica, microscopia eletr?nica de transmiss?o (MET) e varredura (MEV) e determina??o da ?rea de superf?cie espec?fica (BET). As propriedades reol?gicas e tecnol?gicas da argila foram determinadas e comparadas ao talco, estearato de magn?sio e Aerosil 200. Misturas entre os f?rmacos e a argila (1:1, 1:2 e 1:1:1), bem como os materiais isolados, foram avaliadas por calorimetria explorat?ria diferencial (DSC), an?lise termogravim?trica (TG) combinada ? an?lise t?rmica diferencial (DTA) e espectroscopia na regi?o do infravermelho com transformada de Fourier (FT- IR). Estudos de dissolu??o de dispers?es s?lidas e de c?psulas contendo os f?rmacos e a atapulgita foram realizados e comparados ao emprego de talco e estearato de magn?sio. Os resultados mostraram que a atapulgita apresenta part?culas pequenas, com grande ?rea de superf?cie. Apresentou boas caracter?sticas reol?gicas quando comparada ao demais reguladores de fluxo. N?o foi evidenciada intera??o com os f?rmacos testados. Entre as dispers?es, as misturas com atapulgita (5%) mostraram maior dissolu??o dos f?rmacos em rela??o a outros excipientes . O perfil de dissolu??o da rifampicina foi superior na formula??o de c?psula contendo atapulgita em maior concentra??o, sendo estatisticamente diferente nos primeiros minutos. O perfil de dissolu??o da isoniazida tamb?m se mostrou estatisticamente diferente nos primeiros minutos, sendo as formula??es com atapulgita as que apresentaram maior dissolu??o do f?rmaco, por?m em ordem decrescente de concentra??o. A argila atapulgita apresenta, portanto, potencial para aplica??o como excipiente em formas farmac?uticas s?lidas
Books on the topic "Excipiente"
Koo, Otilia M. Y., ed. Pharmaceutical Excipients. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.
Full textRowe, Raymond C. Handbook of pharmaceutical excipients: Edited by Raymond C. Rowe, Paul J. Sheskey, Marian E. Quinn. 6th ed. London: APhA/Pharmaceutical Press, 2009.
Find full textFormulate '94 Symposium (1994 Manchester, England). Excipients and delivery systems for pharmaceutical formulations. Cambridge: The Royal Society of Chemistry, 1995.
Find full textHir, A. Le. Abrégé de pharmacie galénique: Formes pharmaceutiques. 5th ed. Paris: Masson, 1986.
Find full textBrittain, H. G. Profiles of drug substances, excipients and related methodology. Oxford: Academic, 2010.
Find full textBrittain, H. G. Profiles of drug substances, excipients, and related methodology. Amsterdam: Elsevier Academic Press, 2009.
Find full textNarang, Ajit S., and Sai H. S. Boddu, eds. Excipient Applications in Formulation Design and Drug Delivery. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20206-8.
Full textBugay, David E. Pharmaceutical excipients: Characterization by IR, Raman, and NMR spectroscopy. New York: M. Dekker, 1999.
Find full textWeiner, Murray. Adverse reactions to drug formulation agents: A handbook of excipients. New York: Dekker, 1989.
Find full textBook chapters on the topic "Excipiente"
Nahler, Gerhard. "excipient." In Dictionary of Pharmaceutical Medicine, 69–70. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_522.
Full textNahler, Gerhard. "tablet excipients." In Dictionary of Pharmaceutical Medicine, 181. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_1382.
Full textGood, David, and Yongmei Wu. "Excipient Characterization." In Pharmaceutical Excipients, 1–49. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch1.
Full textCorredor, Claudia. "PATability of Excipients." In Pharmaceutical Excipients, 303–27. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch8.
Full textNarang, Ajit S., Aaron Yamniuk, Limin Zhang, S. Nilgun Comezoglu, Dilbir S. Bindra, Sailesh A. Varia, Michael Doyle, and Sherif Badawy. "Drug Excipient Interactions." In Excipient Applications in Formulation Design and Drug Delivery, 13–35. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20206-8_2.
Full textKestur, Umesh, and Divyakant Desai. "Excipients for Conventional Oral Solid Dosage Forms." In Pharmaceutical Excipients, 51–95. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch2.
Full textThakkar, Shreya, Kunnal Sharma, Sakshi Khurana, and Arvind Kumar Bansal. "Excipients and their Functionality for Enabling Technologies in Oral Dosage Forms." In Pharmaceutical Excipients, 97–143. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch3.
Full textChi, Eva Y. "Excipients Used in Biotechnology Products." In Pharmaceutical Excipients, 145–98. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch4.
Full textMoreton, R. C. "Excipient Standards and Harmonization." In Pharmaceutical Excipients, 199–240. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch5.
Full textDeMerlis, Christopher C., Alexa Smith, and David R. Schoneker. "Regulatory Information for Excipients." In Pharmaceutical Excipients, 241–67. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781118992432.ch6.
Full textConference papers on the topic "Excipiente"
Löbmann, Korbinian. "Amorphous stabilisation using proteins as excipients." In The 1st International Electronic Conference on Pharmaceutics. Basel, Switzerland: MDPI, 2020. http://dx.doi.org/10.3390/iecp2020-08783.
Full textSevilha Ferreira, Giovanna, and LAURA DE OLIVEIRA NASCIMENTO. "Excipient suitability for Freeze-Dryed Protein Solutions." In XXV Congresso de Iniciação Cientifica da Unicamp. Campinas - SP, Brazil: Galoa, 2017. http://dx.doi.org/10.19146/pibic-2017-78741.
Full textJampilek, Josef, Eliska Vaculikova, Daniela Placha, and Martin Pisarcik. "Preparation of Risedronate Nanoparticles Using Selected Polymeric Excipients." In The 17th International Electronic Conference on Synthetic Organic Chemistry. Basel, Switzerland: MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-b012.
Full textROCHA, M. U., and R. CONDOTTA. "Estudo das propriedades de misturas de excipientes farmacêuticos." In Congresso Brasileiro de Engenharia Química em Iniciação Científica. São Paulo: Editora Blucher, 2017. http://dx.doi.org/10.5151/chemeng-cobeqic2017-439.
Full textHudler, A., P. K. Moore, and P. Hountras. "Talc Hurts: A Case of Excipient Lung Disease." In American Thoracic Society 2021 International Conference, May 14-19, 2021 - San Diego, CA. American Thoracic Society, 2021. http://dx.doi.org/10.1164/ajrccm-conference.2021.203.1_meetingabstracts.a3527.
Full textBenkő, Ernő Máté, Tamás Sovány, and Ildikó Csóka. "API – excipient interactions in non-biodegradable solid matrix systems." In I. Symposium of Young Researchers on Pharmaceutical Technology,Biotechnology and Regulatory Science. Szeged: Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Faculty of Pharmacy, 2019. http://dx.doi.org/10.14232/syrptbrs.2019.op9.
Full textBenkő, Ernő Máté, Tamás Sovány, and Ildikó Csóka. "API – excipient interactions in non-biodegradable solid matrix systems." In II. Symposium of Young Researchers on Pharmaceutical Technology,Biotechnology and Regulatory Science. Szeged: Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, Faculty of Pharmacy, 2020. http://dx.doi.org/10.14232/syrptbrs.2020.op28.
Full textSerrano, Dolores, Maria Dea-Ayuela, and Lalatsa Aikaterini. "The role of excipients in neglected tropical diseases." In MOL2NET 2017, International Conference on Multidisciplinary Sciences, 3rd edition. Basel, Switzerland: MDPI, 2017. http://dx.doi.org/10.3390/mol2net-03-04621.
Full textHijazi Vega, M., I. Cavada-Carranza, N. Hernán-Moreno, R. Martín-De-Diego, N. Ibañez-Heras, and T. Molina-García. "5PSQ-097 Potentially harmful excipients in neonatal and paediatric patients." In 25th EAHP Congress, 25th–27th March 2020, Gothenburg, Sweden. British Medical Journal Publishing Group, 2020. http://dx.doi.org/10.1136/ejhpharm-2020-eahpconf.414.
Full textSviestina, I., and D. Mozgis. "CP-015 Potentially harmful excipients in medicines for hospitalised neonates." In 22nd EAHP Congress 22–24 March 2017 Cannes, France. British Medical Journal Publishing Group, 2017. http://dx.doi.org/10.1136/ejhpharm-2017-000640.15.
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