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Artificial neural network modeling of tablet coating in a pan coater / Assia Benayache in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 2 (03/2023)
[article]
Titre : Artificial neural network modeling of tablet coating in a pan coater Type de document : texte imprimé Auteurs : Assia Benayache, Auteur ; Lynda Lamoudi, Auteur ; Kamel Daoud, Auteur Année de publication : 2023 Article en page(s) : p. 485-499 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Comprimés
Enrobage pharmaceutique
Ethylcellulose
Matériaux -- Epaisseur
Réseaux neuronaux (informatique)
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Our study decided to use the new and revolutionary approach in the field of pharmaceutical coating processes called the artificial neural network (ANN) by using the neural networks toolbox derived from the Matlab® software. The experiments were performed using tablets of Alfuzosin Chlorhydrate as a model filler, and an aqueous solution of Surelease as a polymer in different contents. The various parameters that can affect coating thickness, weight gain, and the coefficient of variation CV, such as spray rate, air pressure, solid content, speed of the drum, pan loading, and time of coating, were studied. The properties of the coated tablets were evaluated using the ANN, and both the parameters of the coating process and the properties of the coated tablets were used as a basis for optimization, as well as the choice of the optimal structure of the ANN model. It was found that the best neural network architecture had 7 neurons in the hidden layer, with a mean square error of 3.515 and a determination coefficient of nearly 1. The relative importance of each independent variable was quantified using the Garson equation. In this study, spray rate was found to have the highest impact on the properties of tablets. Note de contenu : - MATERIALS AND METHODS : Characterization of core tablets - Coating dispersion - Coating process - Characterization of the coating solution - Characterization of coating tablets
- RESULTS AND DISCUSSION : Model architecture and prediction - Relative importance of input variables - The influence of parameters on the properties of coating tablets - Optimization of coating tablets
- Table 1 : Effect of solids concentration on the viscosity, density, and surface tension of coating fluids measured coating
- Table 2 : Variable parameters
- Table 3 : ANN model's weight and bias matrix
- Table 4 : Effects of coating parameters on the relative standard deviation at the final process stage
- Table 5 : Ideal values of inputs, predicted and experimental values of outputsDOI : https://doi.org/10.1007/s11998-022-00683-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00683-1.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39293
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 2 (03/2023) . - p. 485-499[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24056 - Périodique Bibliothèque principale Documentaires Disponible A critical review of techniques and technology of tablet coating / Nana Satpute in PAINTINDIA, Vol. LXXII, N° 10 (10/2022)
[article]
Titre : A critical review of techniques and technology of tablet coating Type de document : texte imprimé Auteurs : Nana Satpute, Auteur ; Ganesh Zade, Auteur Année de publication : 2022 Article en page(s) : p. 70-77 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Comprimés
Enrobage (technologie)
Enrobage pharmaceutique
Evaluation
Fluidisation
Liants
Pigments
Plastifiants
Polymères
Revêtements organiques
solvantsIndex. décimale : 667.9 Revêtements et enduits Résumé : Pharmaceutical drug coatings are highly advantageous and considerable development has recently happened to enhance the quality of the tablet. Tablet coating is carried out for the purposes such as decoration and protection of tablets along with some functional properties. The coating is a homogeneous mixture of polymeric material ; a very thin layer is applied on a substrate of the drug by using various techniques. These coatings techniques are either manually operated or fully automated. The automatic process gives coating with more uniform film properties at a high production rate. The coating is the last unit operation in the manufacturing of drugs in the pharmaceutical industries. Tablet coating involves the use of various binders, colour forming agents (colorants), organic solvents and plasticizers to get the required characteristics. Coating a tablet is always a great challenge to coating a formulator as it involves various statutory requirements to qualify as well as technically it also performs well against various environmental changes. Coating plays a key role in the pharma industry to protect the drugs from different environmental challenges like changes in humidity, light, heat etc. Now a days in coating application industries various new coating techniques are available like spray and fluidised bed methods that are developed to overcome the limitations of old techniques. This review paper focuses on the various aspects of various raw materials, types of tablet coating, processes of tablet coatings, defects and remedies of tablet coatings etc. Note de contenu : - PURPOSE OF COATING THE TABLET
- TABLET COATING MECHANISM : Types of coatings - Sugar coating
- FILM COATING
- RESIN
- PIGMENTS : Requirements of good pigment
- PLASTICIZER
- SOLVENT : Requirements of good solvent - Advantages of film coating over sugar coatings - Tablet coating defects and remedies - Colour variation - Orange peel - Blooming - Twinning - BListering/pinholes - Cracking - Chipping
- EVALUATION OF TABLET COATING
- ASPECTS OF TABLE COATING CHARACTERISATION
- Fig. 1 : Electrostatic dry coating system
- Fig. 2 : Classification of pigments
- Fig. 3 : Film coating process flow diagramEn ligne : https://drive.google.com/file/d/10h7iu-swNzc7oRVBjKC-cWyRuyx732mn/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38539
in PAINTINDIA > Vol. LXXII, N° 10 (10/2022) . - p. 70-77[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23748 - Périodique Bibliothèque principale Documentaires Disponible Investigation on release of highly water soluble drug from matrix-coated pellets prepared by extrusion–spheronization technique / Muhammad Iqbal Nasiri in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 2 (03/2016)
[article]
Titre : Investigation on release of highly water soluble drug from matrix-coated pellets prepared by extrusion–spheronization technique Type de document : texte imprimé Auteurs : Muhammad Iqbal Nasiri, Auteur ; Rabia Ismail Yousuf, Auteur ; Muhammad Harris Shoaib, Auteur ; Muhammad Fayyaz, Auteur ; Faaiza Qazi, Auteur ; Kamran Ahmed, Auteur Année de publication : 2016 Article en page(s) : p. 333-344 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules.
Diffusion (physique)
Enrobage pharmaceutique
Ethylcellulose
Extrusion sphéronisation
Hydroxypropyl méthylcellulose
Médicaments
Polymères cristallins
Polymères en médecineIndex. décimale : 667.9 Revêtements et enduits Résumé : The objective was to formulate itopride HCl (ITP) extended release matrix-coated pellets by extrusion–spheronization and to investigate the influence of concentration and viscosity grade of different polymers on release of a highly water soluble drug. The matrix pellet formulations consisted of polymers (10–30%) like hydroxypropyl methylcellulose (HPMC K4M, K15M, and K100M), ethyl cellulose (EC-7 cps), microcrystalline cellulose (10–30%) and a fixed quantity of lactose (10%). The initial fast drug release from the matrix pellets was effectively controlled by coating with 5% ethyl cellulose (10 cps) dispersion. The dissolution studies of coated formulations were carried out at different pH, and data were analyzed for drug release kinetics. Scanning electron microscope was used to examine the surface morphology and cross section of pellets. Kinetics of all coated formulations were best explained by Higuchi model (R 2 = 0.94–0.99). However, HPMC matrix-coated pellets (F1, F4 and F7) also followed Baker and Lonsdale model (R 2 = 0.96–0.99), whereas, EC matrix-coated pellets (F10) followed zero-order kinetics (R 2 = 0.99). Release mechanism of all coated formulations was non-fickian. Both uncoated and coated pellets were found to be spherical. Fourier transform infrared spectroscopy was conducted on the coated formulations and no drug–excipients interaction was found. Note de contenu : - Physical and chemical evaluation of uncoated ITP matrix pellet formulation
- Image analysis
- Scanning electron microscopy (SEM)
- Fourier transform infrared spectroscopy (FTIR)
- In vitro drug release studies
- Drug release kinetics
- Drug release mechanism
- Stability studiesDOI : 10.1007/s11998-015-9749-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9749-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26118
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 2 (03/2016) . - p. 333-344[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17962 - Périodique Bibliothèque principale Documentaires Disponible Technologies à lit fluidisé et de lit à jet / Michael Jacob in EXPRESSION COSMETIQUE, N° 60 (11-12/2019)
[article]
Titre : Technologies à lit fluidisé et de lit à jet Type de document : texte imprimé Auteurs : Michael Jacob, Auteur Année de publication : 2019 Article en page(s) : p. 62-65 Langues : Multilingue (mul) Catégories : Agrégats (chimie)
Encapsulation
Enrobage pharmaceutique
Fluidisation
Granulation
Précipitation (chimie)
Vecteurs (pharmacie)Index. décimale : 668.5 Parfums et cosmétiques Résumé : Le traitement des matières premières fragiles doit être réalisé en douceur, a fortiori, lorsqu'elles sont volatiles ou d'origine naturelle. Pour ce faire, la granulation, l'agglomération et l'enrobage par pulvérisation ainsi que la micro-encapsulation sont les méthodes à privilégier car elles assurent en effet un rendement élevé à basse température et un traitement sur mesure. Note de contenu : - Amélioration des propriétés et des performances
- Une technologie révolutionnaire
- Le lit à jet pour substances thermosensibles
- Granulation par pulvérisation et (micro)encapsulation
- Systèmes de vecteurs
- Tableau : Avantages des granules par rapport à la poudre et au liquide
- Fig. 1 : Lors de la micro-encapsulation, basée sur le procédé de granulation par pulvérisation, on superpose et sèche successivement plusieurs couches, jusqu'à atteindre la taille désirée
- Fig. 2 : Photo de MEB : huile encapsulée dans une matrice
- Fig. 3 : Noyau aromatique avec de la cire utilisée comme agent de revêtement
- Fig. 4 : Procell Labsystem pour lits fluidisé et à jetEn ligne : https://drive.google.com/file/d/1oJ9rGOT009QqhhJp1_gdsvGdBuE26p0X/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33455
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Code-barres Cote Support Localisation Section Disponibilité 21425 - Périodique Bibliothèque principale Documentaires Disponible