The Glatt’s R&D model, GPCG , for the pharmaceutical, chemical and food industry, has been introduced in India. GPCG PRO / PLUS. WST/G PRO / PLUS. Fluid bed systems. We set the standard. GPCG PRO. WSG PLUS. GPCG PLUS. WSG PRO. GRANULATING. COATING. GPCG 1. inch Wurster. 6 inch Wurster. 2 liter Granulator/Dryer/Coater. mm Rotor. 50 – g. – g. – g. – g. GPCG

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The use of humidity and temperature profiles in optimizing the size of fluidized bed in a coating process. Quality by design i: The pellets can be filled in capsules, or compressed in tablets or packaged in sachet as the final dosage form. Therefore, variables ranked based on RPN value.

LOD of enteric coated pellets was targeted less than 1. These parameters were considered as process variables for DoE study. The response Y i in each trial was measured by carrying out a multiple factorial regression analysis using the quadratic model:.

A 2 3 full factorial design with two center points was performed to screen the effect of process parameters on yield and assay to explore the quadratic response surfaces and for constructing a second-order polynomial models using Design Expert Version 8.

The recommended pilot model is 18″ Wurster where the Wurster column and base plate are much larger. The batch depth and mass flow density increases. Conducting design of experiments DoE to evaluate all the variables involved in a Wurster coating process is not feasible.

The resulting equation for all three responses Y 1 finesY 2 agglomerates 1. Y 3 assay are presented below: The pellets coating in the bottom spray is considered very critical process than other pelletization techniques because it involved number of process variables which are directly or indirectly affecting the product quality. Successful scale-up of pellets coating process performed based on process optimization conducted at lab scale equipment.


The acceptable range of material attributes was determined based on DS. Ggpcg RPN threshold below 60 ranked low risk, ranked medium risk and above 80 ranked high-risk process variables.

Meurice Research and Development a.s.b.l.

We varied the levels of all process parameters mentioned in table 1 and concluded the selected critical process parameters CPPs which needs systemic optimization plan to reduce the risk. A design matrix comprising 10 experimental runs including 2 centre points was constructed. Failure mode scores could range from 1 to [21].

Atomization Air Pressure bar 0.

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This might be due to some spray dried coating material wet through filter bag and not considered in the calculation of percentage fines. The SEM images of enteric coated pellets presented in fig. In trial F13 and F14, high spray level and low atomization air pressure leads to the formation of more agglomerates. J Food Eng ; Optimized process variables s et al. Photomicrographs of gold coated enteric coated pellets were obtained using a scanning electron microscope SEM; Phenom, Netherlands.

This study indicated that atomization air pressure governed the fines generations, as pressure increased, fines generation increased proportionately. The overall coating zone will remain same in the pilot and commercial scale except the height of the Wurster column. That space defines the arranges of each CPP, taking into account multivariate interactions.

Hence, value of correlation coefficients found less than 0. Updated risk assessment Following completion of process development studies, a greater understanding of the risks to product yield and assay associated with coating process been developed in DS which covered all validated range of process variables. Just like the variables remaining same in pilot scale also, the same process control will apply. Formulation and process considerations.

Her area of interest is developing novel pelletization techniques and coating bpcg for modified release of the pharmaceutical drug products for oral drug delivery. Process variables involved in Wurster based pellets coating process Table 1: Afr J Business Management ;5: As shown in table 6 predicted and experimentally determined values for Y 1Y 2 and Y 3 were comparable. Only the unknown factor will be the mass effect. Trial F15 and F16 showed highest fines generation however, it has no effect on pellet surface.


Analysis of particle coating by spouted bed process.

CPP selection has traditionally been difficult because of a lack of a systematic approach to the problem which due to a large number of unit operations and complexity. The aim of this work was to decide the ranges of CPPs gpcf in enteric coating process.

American Quality Press; Loss on drying LOD Accurately weighed pellets 1. The process variables categorization and risk identification performed based on previous gpc and literature before conducting the preliminary trials.

Risk priority numbers RPNs were calculated as the product of occurrence, severity and detectability scores. SEM images of enteric coated pellets of-a F13, b F14, c F17 and d F19 The agglomerates Y 2 formation was equally influenced by the linear models of spray rate X 2atomization air pressure X 3 and spray rate-atomization air pressure X 2 X 3. When X 2 at low level and X 3 at high level, spray drying increased hence fines increased while X 2 at a high level and X 3 at a low level, agglomeration increased.

Christensen FN, Bertelson P. Current Step 4 version; Process parameters for enteric coating of preliminary trials Process parameters Values Batch Size gm Air distribution plate B Wurster column height mm Nozzle tip diameter 1.

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