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      Multivariate model for in-line monitoring of moisture content in a high shear mixer using near infrared spectroscopy Translated title: Modelo multivariado para monitoreo en línea del contenido de humedad en un mezclador de alta cizalladura usando espectroscopia infrarroja cercana

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          Abstract

          Wet granulation process in a high shear mixer is a complex unit operation widely used in the pharmaceutical and food industry where moisture content is a critical factor since it affects the growth of granules or particles. The granule size affects flow ability, drug delivery, and tablet hardness; therefore, it is important to monitor and to control the quantity of liquid in the mixer. In this work a mixer was equipped with a near infrared (NIR) spectrometer to monitor the moisture content during granulation. Initially, pharmaceutical excipients were homogenized in a mixer. Next, water was added to the powder mixture to initiate wet granulation, and NIR spectra were collected each minute. The aim of this work was to evaluate the near infrared spectroscopy as an in-line technique for monitoring the moisture content of pharmaceutical powders during wet granulation process in a laboratory-scale high shear mixer. The results confirm the ability of NIR spectrometer to take full in-line and off-line spectra of pharmaceutical powders at different levels of added binder. The multivariate model developed for determining the in-line spectra variation during granulation was capable of measuring the moisture content with high precision (0.207% w/w).

          Translated abstract

          El proceso de granulación húmeda en un mezclador de alta cizalladura es una operación compleja ampliamente usada en la industria farmacéutica y alimentos, dónde el contenido de humedad es un factor crítico que afecta el crecimiento de los granulos o las partículas. El tamaño del gránulo afecta la capacidad de flujo, la liberación de droga y dureza de la tableta, por consiguiente, es importante monitorear y controlar la cantidad de líquido en el mezclador. En este trabajo un mezclador fue equipado con un espectrómetro de infrarrojo cercano (NIR) para monitorear el contenido de humedad. Inicialmente, los excipientes farmacéuticos se homogenizan en el mezclador. Luego, se agrega agua a la mezcla de polvos para iniciar la granulación húmeda, y tomar los espectros NIR cada minuto. El objetivo de este trabajo fue evaluar la espectroscopia infrarroja cercana como una técnica en línea para monitorear el contenido de humedad de polvos farmacéuticos durante el proceso de granulación húmeda en un mezclador de alta cizalladura a escala de laboratorio. Los resultados confirman la habilidad del espectrómetro de NIR para tomar espectros en línea y no en línea de polvos farmacéuticos en diferentes niveles de líquido agregado. El modelo multivariado desarrollado determinó el contenido de humedad en el proceso de granulación húmeda con alta exactitud de 0.207% w/w para espectros en línea.

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          Standard Normal Variate Transformation and De-trending of Near-Infrared Diffuse Reflectance Spectra

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            Near Infrared Spectroscopy: fundamentals, practical aspects and analytical applications

            This paper intends to review the basic theory of Near Infrared (NIR) Spectroscopy and its applications in the field of Analytical Science. It is addressed to the reader who does not have a profound knowledge of vibrational spectroscopy but wants to be introduced to the analytical potentialities of this fascinating technique and, at same time, be conscious of its limitations. Essential theory background, an outline of modern instrument design, practical aspects, and applications in a number of different fields are presented. This work does not intend to supply an intensive bibliography but refers to the most recent, significant and representative material found in the technical literature. Because this paper has been produced as consequence of the First Workshop on Near Infrared Spectroscopy, whose venue was Campinas - Brazil, as a pre-conference activity of the XI National Meeting on Analytical Chemistry (ENQA), it also depicts the state of the art of NIR spectroscopy in Brazil, pointing out the current achievements and the need to take the technology to a level consistent with this country's economical activities.
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              The Near Infrared Absorption Spectrum of Liquid Water

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                Author and article information

                Journal
                inde
                Ingeniería y Desarrollo
                Ing. Desarro.
                Fundación Universidad del Norte (Barranquilla, Atlantico, Colombia )
                0122-3461
                2145-9371
                July 2013
                : 31
                : 1
                : 120-134
                Affiliations
                [01] Cartagena orgnameUniversidad de Cartagena orgdiv1Programa de Ingeniería Química Colombia arealpe@ 123456unicartagena.edu.co
                [03] Cartagena orgnameUniversidad de Cartagena orgdiv1Programa de Ingeniería Química macevedom@ 123456unicartagena.edu.co
                [02] Puerto Rico orgnameUniversidad de Puerto Rico orgdiv1Departamento de Ingeniería Química carlos.velazquez9@ 123456upr.edu
                Article
                S0122-34612013000100007 S0122-3461(13)03100107
                83eda153-d548-4da5-8a23-a36fdff8d5a5

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 01 September 2012
                : 19 January 2013
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 28, Pages: 15
                Product

                SciELO Colombia

                Categories
                Original articles

                Contenido de humedad,granulación húmeda,mezclador de alta cizalladura,medidas en línea,medidas fuera de línea,proceso de tecnologías analíticas,High shear mixer,in-line measurements,off-line measurements,moisture content,process analytical technologies,wet granulation

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