1
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Relationship between powder properties and uniformity of ribbon property using feeding guider designs with thermography (PAT) in roller compaction. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Wang LG, Omar C, Litster JD, Li J, Mitchell N, Bellinghausen S, Barrasso D, Salman A, Slade D. Tableting model assessment of porosity and tensile strength using a continuous wet granulation route. Int J Pharm 2021; 607:120934. [PMID: 34310957 DOI: 10.1016/j.ijpharm.2021.120934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 01/17/2023]
Abstract
This paper presents a comprehensive assessment of the most widely used tablet compaction models in a continuous wet granulation tableting process. The porosity models, tensile strength models and lubricant models are reviewed from the literature and classified based on their formulations i.e. empirical or theoretical and applications, i.e. batch or continuous. The majority of these models are empirical and were initially developed for batch tabletting process. To ascertain their effectiveness and serviceability in the continuous tableting process, a continuous powder processing line of Diamond Pilot Plant (DiPP) installed at The University of Sheffield was used to provide the quantitative data for tablet model assessment. Magnesium stearate (MgSt) is used as a lubricant to investigate its influence on the tensile strength. Whilst satisfactory predictions from the tablet models can be produced, a compromise between the model fidelity and model simplicity needs to be made for a suitable model selection. The Sonnergaard model outperforms amongst the porosity models whilst the Reynolds model produces the best goodness of fitting for two parameters fitting porosity models. An improved tensile strength model is proposed to consider the influence of powder size and porosity in the continuous tableting process.
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Affiliation(s)
- Li Ge Wang
- Department of Chemical and Biological Engineering, University of Sheffield, UK; Siemens Process Systems Engineering, Hammersmith, London, UK
| | - Chalak Omar
- Department of Chemical and Biological Engineering, University of Sheffield, UK
| | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, UK.
| | - Jianfeng Li
- Siemens Process Systems Engineering, Parsippany, NJ Office, USA
| | - Niall Mitchell
- Siemens Process Systems Engineering, Hammersmith, London, UK
| | | | - Dana Barrasso
- Siemens Process Systems Engineering, Parsippany, NJ Office, USA
| | - Agba Salman
- Department of Chemical and Biological Engineering, University of Sheffield, UK
| | - David Slade
- Siemens Process Systems Engineering, Hammersmith, London, UK
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3
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Bourduche F, Sanchez-Ballester NM, Bataille B, Lefèvre P, Sharkawi T. Structure-Property Relationship of Amorphous Maltitol as Tableting Excipient. AAPS PharmSciTech 2020; 21:281. [PMID: 33051782 DOI: 10.1208/s12249-020-01824-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 09/14/2020] [Indexed: 11/30/2022] Open
Abstract
Maltitol shows interesting properties compared with mannitol or sorbitol, two other polyols, which are widely used as a pharmaceutical excipients for tablet compaction. For this study, the properties of an amorphous polyol, maltitol, were investigated using a tablet press simulator. The aim of this study was to evaluate the behavior of amorphous maltitol compared to SweetPearl® P 200, a pure product, and SweetPearl® P 300 DC, a textured crystalline maltitol excipient for direct compression. The physicochemical and pharmacotechnical properties were compared, revealing a major change in properties after amorphization. The study of the tabletability, mean yield pressure, elastic properties, etc. shows that the compression behavior of amorphous powders has been significantly altered. The results showed specific properties of amorphous maltitol with good tabletability at low compaction pressure. The stability of the amorphous and the evolution of its behavior in compression were then studied, showing a direct link between its recrystallization and the change in its properties. The use of a stabilizing agent, maltotriitol, slowed down the recrystallization, maintaining the specific properties of the amorphous material in compression for a longer period of time.
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4
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Batghare AH, Roy K, Moholkar VS. Investigations in physical mechanism of ultrasound-assisted antisolvent batch crystallization of lactose monohydrate from aqueous solutions. ULTRASONICS SONOCHEMISTRY 2020; 67:105127. [PMID: 32334378 DOI: 10.1016/j.ultsonch.2020.105127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 03/21/2020] [Accepted: 04/07/2020] [Indexed: 05/28/2023]
Abstract
Sonication is known to enhance crystallization of lactose from aqueous solutions. This study has attempted to reveal the mechanistic features of antisolvent crystallization of lactose monohydrate from aqueous solutions. Experiments were conducted in three protocols, viz. mechanical stirring, mechanical stirring with sonication and sonication at elevated static pressure. Mechanical stirring provided macroconvection while sonication induced microconvection in the system. Other experimental parameters were initial lactose concentration and rate of antisolvent (ethanol) addition. Kinetic parameters of crystallization were coupled with simulations of bubble dynamics. The growth rate of crystals, rate of nucleation, average size of crystal crop and total lactose yield in different protocols were related to nature of convection in the medium. Macroconvection assisted nucleation but could not give high growth rate. Microconvection comprised of microstreaming due to ultrasound and acoustic (or shock) waves due to transient cavitation. Sonication at atmospheric static pressure enhanced growth rate but reduced nucleation. However, with elimination of cavitation at elevated static pressure, sonication enhanced both nucleation and growth rate resulting in almost complete lactose recovery.
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Affiliation(s)
- Amit H Batghare
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Kuldeep Roy
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India
| | - Vijayanand S Moholkar
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781 039, Assam, India.
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5
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Yu M, Omar C, Weidemann M, Schmidt A, Litster JD, Salman AD. Roller compaction: Infrared thermography as a PAT for monitoring powder flow from feeding to compaction zone. Int J Pharm 2020; 578:119114. [PMID: 32035257 DOI: 10.1016/j.ijpharm.2020.119114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/22/2020] [Accepted: 01/31/2020] [Indexed: 11/18/2022]
Abstract
Roller compaction is a continuous dry granulation process, in which powder is compressed by two counter-rotating rollers. During this process, the powder feeding to the compaction zone has a significant effect on product quality. This work investigates the flow of powder from the feeding zone to the compaction zone using online infrared thermography as Process Analytical Technology (PAT) which is achieved via a specially built cheek plate (side-sealing). The powder undergoes increasing stress from the rollers when it is approaching the minimum gap of the compaction zone, which can be indirectly monitored by measuring the powder temperature. The online monitoring of the powder flow during the roller compaction helps locate the nip region and identify the effect of different roller forces on the temperature of the feeding powder. The results show that the nip region can be identified by analysing the temperature profiles from the feeding to the compaction zone. The increase of roller force results in an increasing slope of the powder temperature profile. In addition, offline X-ray CT measurement results show the increase of density along the feeding to the compaction direction, which is compared with Johanson theory under different roller forces in the roller compaction process.
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Affiliation(s)
- Mingzhe Yu
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.
| | - Chalak Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Marcus Weidemann
- Alexanderwerk AG, Remscheid, North Rhine-Westphalia 42857, Germany
| | | | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.
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6
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Yu M, Weidemann M, Omar CS, Schmidt A, Litster JD, Salman AD. Application of feeding guiders to improve the powder distribution in the two scales of roller compactors. Int J Pharm 2020; 573:118815. [PMID: 31751637 DOI: 10.1016/j.ijpharm.2019.118815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 11/19/2022]
Abstract
Roller compaction is a continuous dry granulation process, where the powder is compressed between two counter-rotating rollers and compacted into ribbons. The quality and homogeneity of the granulate is determined by the uniformity and porosity of the ribbon, which depends on the feeding process of the primary powder to the rollers, the flow properties of the primary powder and process parameters such as roller forces. Previous work was conducted to improve the powder flow and distribution in the feeding zone by developing new feeding guiders, which are located in the feeding zone close to the rollers on the lab-scale roller compactor Alexanderwerk WP120 Pharma (Yu et al., 2018). These new feeding guiders were used to reduce the amount of powder that is delivered to the centre of the rollers and increase the amount of powder that is delivered to the sides of the rollers, in comparison to the original feeding guiders. This modified concept using new feeding guiders has been applied to the large-scale roller compactor Alexanderwerk WP200 Pharma in the present work. In order to evaluate the homogeneity of the ribbon properties across the ribbon width, the temperature profile and porosity distribution across the ribbon width were measured. The new feeding guiders resulted in ribbons being produced with a more uniform temperature profile and porosity distribution across the ribbon width when using the small and large scale roller compactors at different process parameters.
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Affiliation(s)
- Mingzhe Yu
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Marcus Weidemann
- Alexanderwerk AG, Remscheid, North Rhine-Westphalia, 42857, Germany
| | - Chalak S Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | | | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield S1 3JD, United Kingdom.
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7
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Muliadi AR, Banda A, Mao C. Recent Progress in Roll Compaction Process Development for Pharmaceutical Solid Dosage Form Manufacture. CONTINUOUS PHARMACEUTICAL PROCESSING 2020. [DOI: 10.1007/978-3-030-41524-2_7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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8
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Yu J, Xu B, Zhang K, Shi C, Zhang Z, Fu J, Qiao Y. Using a Material Library to Understand the Impacts of Raw Material Properties on Ribbon Quality in Roll Compaction. Pharmaceutics 2019; 11:pharmaceutics11120662. [PMID: 31817930 PMCID: PMC6956229 DOI: 10.3390/pharmaceutics11120662] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/09/2019] [Accepted: 12/04/2019] [Indexed: 12/19/2022] Open
Abstract
The purpose of this study is to use a material library to investigate the effect of raw material properties on ribbon tensile strength (TS) and solid fraction (SF) in the roll compaction (RC) process. A total of 81 pharmaceutical materials, including 53 excipients and 28 natural product powders (NPPs), were characterized by 22 material descriptors and were compacted under five different hydraulic pressures. The transversal and longitudinal splitting behaviors of the ribbons were summarized. The TS-porosity and TS-pressure relationships were used to explain the roll compaction behavior of powdered materials. Through defining the target ribbon quality (i.e., 0.6 ≤ SF ≤ 0.8 and TS ≥ 1 MPa), the roll compaction behavior classification system (RCBCS) was built and 81 materials were classified into three categories. A total of 24 excipients and five NPPs were classified as Category I materials, which fulfilled the target ribbon quality and had less occurrence of transversal splitting. Moreover, the multivariate relationships between raw material descriptors, the hydraulic pressure and ribbon quality attributes were obtained by PLS regression. Four density-related material descriptors and the cohesion index were identified as critical material attributes (CMAs). The multi-objective design space summarizing the feasible material properties and operational region for the RC process were visualized. The RCBCS presented in this paper enables a formulator to perform the initial risk assessment of any new materials, and the data modeling method helps to predict the impact of formulation ingredients on strength and porosity of compacts.
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Affiliation(s)
- Jiaqi Yu
- Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, China; (J.Y.); (K.Z.); (C.S.)
| | - Bing Xu
- Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, China; (J.Y.); (K.Z.); (C.S.)
- Beijing Key Laboratory of Chinese Medicine Manufacturing Process Control and Quality Evaluation, Beijing 100029, China; (Z.Z.); (J.F.)
- Correspondence: (B.X.); (Y.Q.); Tel.: +86-010-53912117 (B.X.)
| | - Kunfeng Zhang
- Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, China; (J.Y.); (K.Z.); (C.S.)
| | - Chenfeng Shi
- Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, China; (J.Y.); (K.Z.); (C.S.)
| | - Zhiqiang Zhang
- Beijing Key Laboratory of Chinese Medicine Manufacturing Process Control and Quality Evaluation, Beijing 100029, China; (Z.Z.); (J.F.)
- Beijing Tcmages Pharmceutical Co. LTD, Beijing 101301, China
| | - Jing Fu
- Beijing Key Laboratory of Chinese Medicine Manufacturing Process Control and Quality Evaluation, Beijing 100029, China; (Z.Z.); (J.F.)
- Beijing Tcmages Pharmceutical Co. LTD, Beijing 101301, China
| | - Yanjiang Qiao
- Department of Chinese Medicine Information Science, Beijing University of Chinese Medicine, Beijing 100029, China; (J.Y.); (K.Z.); (C.S.)
- Beijing Key Laboratory of Chinese Medicine Manufacturing Process Control and Quality Evaluation, Beijing 100029, China; (Z.Z.); (J.F.)
- Correspondence: (B.X.); (Y.Q.); Tel.: +86-010-53912117 (B.X.)
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9
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High-shear granulation: An investigation into the granule consolidation and layering mechanism. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.076] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Mahmah O, Adams MJ, Omar CS, Gururajan B, Salman AD. Roller compaction: Ribbon splitting and sticking. Int J Pharm 2019; 559:156-172. [PMID: 30682449 DOI: 10.1016/j.ijpharm.2019.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 12/20/2018] [Accepted: 01/11/2019] [Indexed: 10/27/2022]
Abstract
Roller compaction is the main technique employed in dry granulation. Ribbon sticking and splitting are among the major factors that can hinder the use of this process for some formulations. Ribbon splitting can occur either transversally (through the ribbon thickness) or longitudinally (through the ribbon width). It was observed that transverse splitting is commonly associated with sticking of the split ribbons to the rollers and results in an inferior performance of the process. Longitudinal splitting is associated with an across-width distribution of the ribbon density so that there may an adverse effect on the mechanical strength and dissolution properties of the tablets formed from the milled granules. The aim of the current work was to elucidate the mechanisms of splitting by an experimental study involving single component powders with a range of yield strengths, including those that are commonly used as excipients. Both smooth and knurled rollers were employed without and with lubrication by applying magnesium stearate to the rollers. The minimum gap was fixed and the maximum roll stress was varied. The observed trends for the smooth rollers were rationalised in terms of a splitting index, which is a measure of the residual stresses driving crack growth relative to the tensile strength of the ribbons. There was a lower limit at which splitting was observed but the occurrence of transverse splitting decreased and that for longitudinal splitting increased with increasing values of the index, which was accompanied by an increase in mixed transverse-longitudinal splitting. Transverse splitting was always associated with sticking to the rollers and was prevented by external lubrication. The main difference with the knurled rollers was that in some cases transverse splitting occurred without sticking to the rollers. A detailed discussion of the mechanisms involved is presented.
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Affiliation(s)
- Osama Mahmah
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK.
| | - M J Adams
- School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
| | - Chalak S Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | | | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
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11
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Wiedey R, Kleinebudde P. Potentials and limitations of thermography as an in-line tool for determining ribbon solid fraction. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.03.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Altamimi MJ, Wolff K, Nokhodchi A, Martin GP, Royall PG. Variability in the α and β anomer content of commercially available lactose. Int J Pharm 2019; 555:237-249. [DOI: 10.1016/j.ijpharm.2018.10.061] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 11/16/2022]
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13
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Reimer HL, Kleinebudde P. Hybrid modeling of roll compaction processes with the Styl'One Evolution. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.02.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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14
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Omar CS, Al-Asady RB, Salman AD. Roller compaction: Improving the homogeneity of ribbon properties along the roller width. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2018.10.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Abu Fara D, Rashid I, Alkhamis K, Al-Omari M, Chowdhry BZ, Badwan A. Modification of α-lactose monohydrate as a direct compression excipient using roller compaction. Drug Dev Ind Pharm 2018; 44:2038-2047. [PMID: 30095020 DOI: 10.1080/03639045.2018.1508224] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Deeb Abu Fara
- Chemical Engineering Department, School of Engineering, University of Jordan, Amman, Jordan
| | - Iyad Rashid
- The Jordanian Pharmaceutical Manufacturing Co, Naor, Jordan
| | - Khouloud Alkhamis
- Faculty of Pharmacy, University of Jordan for Science and Technology, Irbid, Jordan
| | | | - B. Z. Chowdhry
- Faculty of Engineering & Science, University of Greenwich (Medway Campus), Chatham Maritime, Kent, UK
| | - Adnan Badwan
- The Jordanian Pharmaceutical Manufacturing Co, Naor, Jordan
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16
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Infrared thermography — A new approach for in-line density measurement of ribbons produced from roll compaction. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2017.01.052] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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17
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Twin Screw Granulation: Effects of Properties of Primary Powders. Pharmaceutics 2018; 10:pharmaceutics10020068. [PMID: 29865249 PMCID: PMC6027506 DOI: 10.3390/pharmaceutics10020068] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 05/28/2018] [Accepted: 05/30/2018] [Indexed: 11/17/2022] Open
Abstract
Lactose and mannitol are some of the most commonly used powders in the pharmaceutical industry. The limited research published so far highlights the effects of process and formulation parameters on the properties of the granules and the tablets produced using these two types of powders separately. However, the comparison of the performance of these two types of powders during twin screw wet granulation has received no attention. The present research is focused on understanding the granulation mechanism of different grades of two pharmaceutical powders with varying properties (i.e., primary particle size, structure, and compressibility). Three grades each of lactose and mannitol were granulated at varying liquid to solid ratios (L/S) and screw speed. It was noticed that primary powder morphology plays an important role in determining the granule size and structure, and tablet tensile strength. It was indicated that the processed powders such as spray-dried and granulated lactose and mannitol can be used in formulation for wet granulation where flowability of active pharmaceutical ingredient (API) is poor.
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18
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Grote S, Kleinebudde P. A comparative study of the influence of alpha-lactose monohydrate particle morphology on granule and tablet properties after roll compaction/dry granulation. Pharm Dev Technol 2018; 24:314-322. [DOI: 10.1080/10837450.2018.1476977] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Simon Grote
- Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Duesseldorf, Germany
| | - Peter Kleinebudde
- Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Duesseldorf, Germany
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19
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Yu M, Omar C, Schmidt A, Litster JD, Salman AD. Improving feeding powder distribution to the compaction zone in the roller compaction. Eur J Pharm Biopharm 2018; 128:57-68. [PMID: 29678732 DOI: 10.1016/j.ejpb.2018.04.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 11/18/2022]
Abstract
In the roller compaction process, powder flow properties have a significant influence on the uniformity of the ribbon properties. The objective of this work was to improve the powder flow in the feeding zone by developing novel feeding guiders which are located in the feeding zone close to the rollers in the roller compactor (side sealing system). Three novel feeding guiders were designed by 3D printing and used in the roller compactor, aiming to control the amount of powder passing across the roller width. The new feeding guiders were used to guide more powder to the sides between the rollers and less powder to the centre comparing to the original feeding elements. Temperature profile and porosity across the ribbon width indicated the uniformity of the ribbon properties. Using the novel feeding guiders resulted in producing ribbons with uniform temperature profile and porosity distribution across the ribbon width. The design of the feeding guiders contributed to improving the tensile strength of the ribbons produced from the compaction stage as well as reducing the fines produced from the crushing stage.
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Affiliation(s)
- Mingzhe Yu
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom.
| | - Chalak Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom
| | | | - James D Litster
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Newcastle Street, Sheffield S1 3JD, United Kingdom.
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20
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Omar CS, Hounslow MJ, Salman AD. Implementation of an online thermal imaging to study the effect of process parameters of roller compactor. Drug Deliv Transl Res 2018; 8:1604-1614. [PMID: 29441467 PMCID: PMC6280803 DOI: 10.1007/s13346-018-0493-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
During roller compaction, not only the properties of the primary powder affect the product quality but also the process parameters. Any change in the process parameters during roller compaction will result in changing the properties of the ribbon. In this study, the temperature of the ribbon during production was monitored online using a thermal camera. The information from the thermal camera was used to explain the differences in ribbon properties at varying process parameters. Lactose powder was used as a primary powder, and ribbons were produced at different process parameters. The surface temperature of the ribbon during production was found to increase with increasing both the gap between the two rollers and the roller speed. This was attributed to the screw feeder speed, which increased to feed additional powder as required to adjust to the change in process parameters. Increasing the roller gap resulted in wider ribbons and decreased the percentage of fines in the product, which was a signature of better powder distribution across the roller width. The results were also supported by the uniform temperature distribution recorded across the ribbon width. It was found that increasing the roller speed during roller compaction decreased the width of the ribbon while increasing the percentage of fines in the product. The feeder screw speed was found to have a similar effect as the roller gap.
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Affiliation(s)
- Chalak S Omar
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
| | - Michael J Hounslow
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK
| | - Agba D Salman
- Department of Chemical and Biological Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK.
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21
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Thapa P, Lee AR, Choi DH, Jeong SH. Effects of moisture content and compression pressure of various deforming granules on the physical properties of tablets. POWDER TECHNOL 2017. [DOI: 10.1016/j.powtec.2017.01.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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22
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Maniruzzaman M, Nokhodchi A. Continuous manufacturing via hot-melt extrusion and scale up: regulatory matters. Drug Discov Today 2016; 22:340-351. [PMID: 27866007 DOI: 10.1016/j.drudis.2016.11.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Revised: 09/09/2016] [Accepted: 11/09/2016] [Indexed: 02/08/2023]
Abstract
Currently, because globalization, the pharmaceutical industry is facing enormous challenges to comply with regulatory matters. Reduced patent life and overall decreased profitability of newly discovered drugs are also forcing the pharmaceutical industry to shorten the drug development time with maximum throughput. Therefore, continuous manufacturing (CM) processes via hot melt extrusion (HME) can be a promising alternative for achieving these goals. HME offers solvent-free green technology with a process that is easy to scale up. Moreover, CM provides better product quality assurance compared with batch processes, with fewer labor costs and shorter time to development. In this review, we primarily focus on various aspects of CM and the emerging application of HME to bridge the current manufacturing gap in pharmaceutical sphere.
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Affiliation(s)
- Mohammed Maniruzzaman
- Pharmaceutics Research Laboratory, Arundel Building, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK.
| | - Ali Nokhodchi
- Pharmaceutics Research Laboratory, Arundel Building, School of Life Sciences, University of Sussex, Brighton BN1 9QJ, UK; Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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Omar CS, Dhenge RM, Palzer S, Hounslow MJ, Salman AD. Roller compaction: Effect of relative humidity of lactose powder. Eur J Pharm Biopharm 2016; 106:26-37. [DOI: 10.1016/j.ejpb.2016.02.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Revised: 02/26/2016] [Accepted: 02/28/2016] [Indexed: 11/24/2022]
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