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Modelling a fluidized wet granulation process

Authors: Barata, Miguel Guerreiro;

Modelling a fluidized wet granulation process

Abstract

Tradicionalmente, a produção de medicamentos pela indústria farmacêutica é realizada em modo descontínuo sendo o produto acabado libertado após a sua verificação, também designado por quality-by-testing. Este fato decorre em parte devido ao elevado nível de regulação, o que, no passado, juntamente com outros fatores, dificultou a transição para processos contínuos e novos paradigmas de avaliação da qualidade. Atualmente, a transição para processos de produção em contínuo começou a ser incentivada pelas autoridades reguladoras, sendo que estes processos serão vantajosos não só para a indústria, por aumentar a eficiência dos processos de produção, mas também para os consumidores, fornecendo uma maior consistência na qualidade dos produtos fabricados. A Food and Drug Administration (FDA) e a European Medicines Agency (EMA), assim como as novas guidelines do Conselho Internacional para Harmonização de Requisitos Técnicos de Produtos Farmacêuticos para Uso Humano (ICH). incentivam agora o desenvolvimento de processos de produção de medicamentos baseados no conceito de Quality-By-Design (QbD). Permitindo implementar processos contínuos de produção baseando-se num conhecimento aprofundado das principais variáveis que influenciam o processo de fabrico, de forma a conceber um produto de qualidade e, tendo em conta que a qualidade não deve ser testada no produto final, mas sim desenvolvida desde a primeira etapa de produção. Com o conceito de QbD em mente, foi decidido, neste estudo, desenvolver um design space (DS) para um processo de granulação, uma vez que se trata de um processo importante na produção de várias formas farmacêuticas. Para isso, estudou-se uma combinação de variáveis e parâmetros do processo que demostram resultar num produto de qualidade, ou seja, dentro das especificações que foram estabelecidas. As variáveis escolhidas para este estudo incluíram a formulação e parâmetros identificados como críticos do processo. Para alcançar este objetivo, foi utilizado um método de delineamento experimental de forma a definir os ensaios a realizar. Os grânulos foram testados de acordo com vários parâmetros de qualidade de forma a estabelecer o DS. De modo a testar a influência do processo de granulação na forma farmacêutica final, foi decidido também proceder à produção de comprimidos, que foram também testados.

Traditionally the production of medicines by the pharmaceutical industry is done in batches with the finished product released after verification, also known as quality-by-testing. This is due to the fact that it is an industry with tight regulations that, in the past, together with other factors, made the transition to continuous processes, as well as quality control methods difficult. Currently, the transition to continuous processes has been encouraged by regulatory authorities as these processes will be advantageous not only for the industry, as it increases the efficiency of the processes, but also for the consumers, providing higher quality to the manufactured product. Food and Drug Administration (FDA) and the European Medicines Agency (EMA), as well as the new guidelines from the International Council for Harmonization of Technical Requirements for Pharmaceutical Products for Human Use (ICH) now encourage the development of drug manufacturing processes based on the concept of quality-bydesign(QbD), with the opportunity of implementing continuous production processes based on an in-depth knowledge of the main variables that influence the manufacturing process, in order to design a quality product, with the notion that quality cannot be tested on a product but developed from the ground up starting with the first step of production. With the concept of QbD in mind, it was decided, in this study, to develop a design space (DS) for a granulation process, an important process in the production of various pharmaceutical forms, studying a combination of variables and process parameters that guarantee to result in a product with quality, that is, within the specifications that were decided. The variables chosen for this process included the formulation and critical parameters of the process. To achieve this objective, experimental design was used in order to establish the most important tests. The granules were tested in various experiments suitable to our variables in order to establish the DS. In order to test the influence of the granulation process on the final pharmaceutical form, it was also decided to proceed with the production of tablets, which were also tested.

Trabalho Final de Mestrado Integrado, Ciências Farmacêuticas, 2020, Universidade de Lisboa, Faculdade de Farmácia.

Com o patrocínio da Faculdade de Farmácia da Universidade de Lisboa.

Country
Portugal
Related Organizations
Keywords

Ciências da Saúde, Granulation, Tabletting, Design space, Mestrado integrado -2020, Design of experiments, Quality by design

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green