2015
DOI: 10.1016/j.microc.2014.07.017
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Multivariate control charts for monitoring captopril stability

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Cited by 12 publications
(6 citation statements)
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“… 14 In other words, this would mean that the underdoses initially observed in the captopril products 6 could be attributed to the poor quality of the active substance used and/or, to a larger extent, to degradation occurring either during manufacture and/or during improper storage. However, as it is well depicted that captopril is far more susceptible to degradation in the presence of some excipients than alone, 15 16 one can fathom that the presence of captopril disulfide may more likely result from degradation due to uncontrolled exposure. As for amlodipine, chromatographic analyses showed in 30 samples the presence of an impurity due to amlodipine-lactose interaction ( figure 2B ).…”
Section: Discussionmentioning
confidence: 99%
“… 14 In other words, this would mean that the underdoses initially observed in the captopril products 6 could be attributed to the poor quality of the active substance used and/or, to a larger extent, to degradation occurring either during manufacture and/or during improper storage. However, as it is well depicted that captopril is far more susceptible to degradation in the presence of some excipients than alone, 15 16 one can fathom that the presence of captopril disulfide may more likely result from degradation due to uncontrolled exposure. As for amlodipine, chromatographic analyses showed in 30 samples the presence of an impurity due to amlodipine-lactose interaction ( figure 2B ).…”
Section: Discussionmentioning
confidence: 99%
“…Existem trabalhos publicados usando cartas de controle multivariadas baseadas no NAS e técnicas espectrométricas para monitorar a qualidade das composições polimórficas de formulações farmacêuticas, [32][33][34] entre outros processos estatísticos de produção. 35,36 Porém, trabalhos publicados para monitorar o teor do biodiesel e a presença de adulterantes nas misturas biodiesel/diesel usando cartas de controle multivariadas e espectrometria MIR são muito escassos. [37][38][39] Além disso, ainda não existem trabalhos publicados para identificar adulterantes no biodiesel metílico de Crambe usando este método.…”
Section: Artigounclassified
“…No uso do método de cartas de controle multivariadas, o tamanho de cada conjunto de amostras não é estabelecido por nenhuma norma, porém, costuma-se definir o número de amostras que sejam representativas de cada conjunto dentro de uma faixa de concentração desejável para a modelagem. [32][33][34][35][36] O conjunto I de amostras foi constituído por 18 amostras do diesel puro, designados por amostras do branco ou placebo (apenas amostras do diesel, sem o analito de interesse), em que tais amostras foram usadas para a construção do espaço interferente. O conjunto II foi constituído por 21 amostras B10, designado por amostras de calibração ou amostras "dentro do controle de qualidade", isso é, amostras que foram preparadas dentro das especificações de qualidade e sob condições normais de operação (NOC -do inglês, Normal Operation Condition).…”
Section: Preparação De Amostrasunclassified
“…Tôrres et al [114] performed accelerated degradation studies of captopril and applied Multivariate Statistical Process Control (MSPC) for monitoring and identifying any changes in samples in order to guarantee the product quality. The details of all procedure data treatment can be found in reference [114]. The captopril stability was evaluated leaving 24 blisters of tablets of the same batch in a climatic chamber at 40 ± 2 °C and 75 ± 5% of relative humidity.…”
Section: Applications Of Chemometric Tools In Forced Degradation Smentioning
confidence: 99%
“…PCA is a useful tool in the Hotelling’s T 2 statistic, since it reduces the number of variables to be monitored, changing the original variables by the scores in the PCA, without significant information loss from dataset. The PCA along with the multivariate control charts contributes to identify possible failures and changes early in the process, making this method useful to ensure the quality control of product [114]. The same authors also performed a similar work using the mid (MIR) and near (NIR) infrared techniques [115].…”
Section: Applications Of Chemometric Tools In Forced Degradation Smentioning
confidence: 99%