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Minode M, Kadota K, Kawabata D, Yoshida M, Shirakawa Y. Enhancement in dissolution behavior and antioxidant capacity of quercetin with amino acids following radical formation via mechanochemical technique. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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Okazaki F, Hattori Y, Sasaki T, Otsuka M. Mechanochemical Effect on Controlled Drug Release of Konjac Glucomannan Matrix Tablets during Dry Grinding. Gels 2022; 8:gels8030181. [PMID: 35323294 PMCID: PMC8954073 DOI: 10.3390/gels8030181] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/01/2023] Open
Abstract
To design a controlled drug release preparation based on a safe natural material, a Konjac glucomannan (KGM) mixture containing 16.0 w/w% calcium hydroxide (Ca(OH)2) was ground in a planetary ball mill for 0–120 min. The mechanochemical effect on the physicochemical properties of the KGM ground product was investigated by Fourier-transform infrared spectroscopy (FT-IR), powder X-ray spectroscopy, scanning electron microscopy with energy-dispersive X-ray spectroscopy, and drug release testing. The FT-IR spectra of the ground KGM indicated that the deacetylation reaction of KGM was accelerated in the Ca(OH)2-containing sols by mechanochemical energy, and the degree of deacetylation of KGM was dependent on the grinding time. The time required for tablet disintegration of the KGM matrix tablets containing theophylline increased as the grinding time increased; therefore, drug release was sustained. The Higuchi plots of the matrix tablets obtained from KGM ground for 60–120 min exhibited good linearity because they maintained their gel matrix tablet shape during the release test. However, KGM tablets ground for 0–30 min exhibited nonlinear curves, which were caused by tablet disintegration. This suggests that drug release from the KGM matrix tablet can be freely controlled by the degree of mechanochemical treatment.
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Affiliation(s)
- Fuminori Okazaki
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
| | - Yusuke Hattori
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
| | - Tetsuo Sasaki
- Graduate School of Medical Photonics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Shizuoka, Japan;
| | - Makoto Otsuka
- Faculty of Pharmacy, Musashino University, 1-1-20 Shinmachi, Nishi-Tokyo 202-8585, Tokyo, Japan; (F.O.); (Y.H.)
- Research Institute of Electronics, Shizuoka University, 3-5-1 Johoku, Naka-ku, Hamamatsu 432-8011, Shizuoka, Japan
- Correspondence: ; Tel./Fax: +81-053-478-3264
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Tian X, Wang Z, Wang X, Ma S, Sun B, Wang F. Mechanochemical effects on the structural properties of wheat starch during vibration ball milling of wheat endosperm. Int J Biol Macromol 2022; 206:306-312. [PMID: 35240210 DOI: 10.1016/j.ijbiomac.2022.02.160] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 02/24/2022] [Accepted: 02/25/2022] [Indexed: 11/16/2022]
Abstract
Pure wheat endosperm was fully ground in a vibratory ball mill and structural changes in wheat starch were measured to assess the effect of mechanochemical action during the grinding process. Vibratory ball milling changed the endosperm granule size to ~30 μm (D50). There was a significant increase in damaged starch content, and this was positively correlated with the grinding time. The relative crystallinity of starch decreased by 5% after milling 105 min, and the short-range order decreased. The damaged structure of amylopectin starch decreased with milling time, as detected macroscopically by the peak viscosity and final viscosity of milling samples. Overall, the in vitro digestion results showed that mechanical modification caused irregular defects inside wheat starch crystals, increased the sensitivity of wheat starch to enzymes, enhanced the hydrolysis rate three-fold, and increased the maximum starch hydrolysis by 50%. Mechanochemistry effects was used to analyze the quality changes in wheat milling.
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Affiliation(s)
- Xiaoling Tian
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Zhen Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Xiaoxi Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Sen Ma
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China.
| | - Binghua Sun
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
| | - Fengcheng Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, China
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Puri V, Sharma A, Kumar P, Singh I, Huanbutta K. Synthesis and Characterization of Thiolated Gum Ghatti as a Novel Excipient: Development of Compression-Coated Mucoadhesive Tablets of Domperidone. ACS OMEGA 2021; 6:15844-15854. [PMID: 34179628 PMCID: PMC8223422 DOI: 10.1021/acsomega.1c01328] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 06/01/2021] [Indexed: 05/08/2023]
Abstract
Mucoadhesive polymers represent a major part of site-specific and localized retention strategies in oral drug delivery. The present research was designed to synthesize and characterize a novel mucoadhesive carbohydrate polymer (thiolated gum ghatti; TGG), which was employed to formulate mucoadhesive tablets of domperidone using an industrially viable compression coating technique. Thiolation of gum ghatti was achieved by the ester formation (esterification) between the hydroxyl group and the carboxyl group of gum ghatti and thioglycolic acid. TGG was characterized by various physicochemical techniques such as FTIR, XRD, SEM, and DSC. In rheological studies, the observed viscosities of pure gum mucin were 45.45 and 71.75 mPa·s and those of the thiolated gum were 78.7 and 112.58 mPa·s, respectively, in water and simulated gastric fluid. A significant increase in viscosity for thiolated gum may be attributed to increased macromolecular interactions responsible for enhanced mucoadhesive potential of thiolated gum. In silico studies corroborate the role of mucin gum interaction and energetic stabilization for enhanced mucoadhesion properties of thiolated gum. Ex vivo mucoadhesion strength of gum ghatti- and TGG-coated tablets was found to be ranging between 45.77 ± 1.49 and 88.16 ± 1.75 and 115.32 ± 2.36 and 184.65 ± 2.07 mN, respectively. In an acute oral toxicity study, TGG did not show any toxicity on the vital organs of the Wistar rat and proved to be a safe polymer. TGG may be regarded as a promising polymer for developing different mucoadhesive drug delivery systems.
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Affiliation(s)
- Vivek Puri
- Chitkara
College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
- Chitkara
University School of Pharmacy, Chitkara
University, Solan 174103, Himachal Pradesh, India
| | - Ameya Sharma
- Chitkara
College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
- Chitkara
University School of Pharmacy, Chitkara
University, Solan 174103, Himachal Pradesh, India
| | - Pradeep Kumar
- Wits
Advanced Drug Delivery Platform Research Unit, Department of Pharmacy
and Pharmacology, School of Therapeutic Sciences, Faculty of Health
Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa
| | - Inderbir Singh
- Chitkara
College of Pharmacy, Chitkara University, Rajpura 140401, Punjab, India
| | - Kampanart Huanbutta
- Faculty
of Pharmaceutical Sciences, Burapha University, 169, Saensook, Muang 20131, Chonburi, Thailand
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Formulation and evaluation of bitter taste-masked orally disintegrating tablets of high memantine hydrochloride loaded granules coated with polymer via layering technique. Int J Pharm 2021; 604:120725. [PMID: 34029663 DOI: 10.1016/j.ijpharm.2021.120725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/06/2021] [Accepted: 05/19/2021] [Indexed: 01/03/2023]
Abstract
Orally disintegrating tablets (ODTs) improve patient adherence as they can easily disintegrate in the presence of small amount of saliva. However, the bitter taste of the active pharmaceutical ingredient in ODTs reduces patient compliance. The present study aimed to formulate bitter taste-masked ODTs containing high-dose of memantine hydrochloride (MTN) to achieve a balance between bitterness suppression and dissolution rate or disintegration time and mechanical strength. The high MTN-loaded granules were prepared using a fluidized bed granulator. Taste-masking granules coated with the selected polymer were prepared using the layering technique. Three ODTs, composed of granules coated with different polymers, were prepared. The ODT prepared using granules coated with enteric polymers showed the fastest collapse time (>20 s). Dissolution rates of ODTs composed of enteric polymers were reduced by 5 min compared with ODTs composed of non-coated or coated with water-insoluble polymer granules. X-ray computed tomography analysis revealed that low density distribution of ODTs with enteric polymer granules may result in faster disintegration time. Although ODT prepared using enteric polymers had the fastest collapse time, its change in membrane potential caused by adsorption (CPA), corresponding to aftertaste, was the lowest among formulations. This CPA value was lower than the bitterness threshold.
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Elgaied-Lamouchi D, Descamps N, Lefèvre P, Mackin-Mohamour AR, Neut C, Siepmann F, Siepmann J, Muschert S. Robustness of Controlled Release Tablets Based on a Cross-linked Pregelatinized Potato Starch Matrix. AAPS PharmSciTech 2020; 21:148. [PMID: 32436061 DOI: 10.1208/s12249-020-01674-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/31/2020] [Indexed: 12/16/2022] Open
Abstract
The aim of this study was to evaluate the potential of a cross-linked pregelatinized potato starch (PREGEFLO® PI10) as matrix former for controlled release tablets. Different types of tablets loaded with diprophylline, diltiazem HCl or theophylline were prepared by direct compression of binary drug/polymer blends. The drug content was varied from 20 to 50%. Two hydroxypropyl methylcellulose grades (HPMC K100LV and K100M) were studied as alternative matrix formers. Drug release was measured in a variety of release media using different types of experimental set-ups. This includes 0.1 N HCl, phosphate buffer pH 6.8 and water, optionally containing different amounts of NaCl, sucrose, ethanol or pancreatin, fasted state simulated gastric fluid, fed state simulated gastric fluid, fasted state simulated intestinal fluid, fed state simulated intestinal fluid as well as media simulating the conditions in the colon of healthy subjects and patients suffering from Crohn's disease. The USP apparatuses I/II/III were used under a range of operating conditions and optionally coupled with the simulation of additional mechanical stress. Importantly, the drug release kinetics was not substantially affected by the investigated environmental conditions from tablets based on the cross-linked pregelatinized potato starch, similar to HPMC tablets. However, in contrast to the latter, the starch-based tablets roughly kept their shape upon exposure to the release media (they "only" increased in size) during the observation period, and the water penetration into the systems was much less pronounced. Thus, the investigated cross-linked pregelatinized potato starch offers an interesting potential as matrix former in controlled release tablets.
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Gajjar P, Styliari ID, Nguyen TTH, Carr J, Chen X, Elliott JA, Hammond RB, Burnett TL, Roberts K, Withers PJ, Murnane D. 3D characterisation of dry powder inhaler formulations: Developing X-ray micro computed tomography approaches. Eur J Pharm Biopharm 2020; 151:32-44. [PMID: 32268190 DOI: 10.1016/j.ejpb.2020.02.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Carrier-based dry powder inhaler (DPI) formulations need to be accurately characterised for their particle size distributions, surface roughnesses, fines contents and flow properties. Understanding the micro-structure of the powder formulation is crucial, yet current characterisation methods give incomplete information. Commonly used techniques like laser diffraction (LD) and optical microscopy (OM) are limited due to the assumption of sphericity and can give variable results depending on particle orientation and dispersion. The aim of this work was to develop new three dimensional (3D) powder analytical techniques using X-ray computed tomography (XCT) that could be employed for non-destructive metrology of inhaled formulations. α-lactose monohydrate powders with different characteristics have been analysed, and their size and shape (sphericity/aspect ratio) distributions compared with results from LD and OM. The three techniques were shown to produce comparable size distributions, while the different shape distributions from XCT and OM highlight the difference between 2D and 3D imaging. The effect of micro-structure on flowability was also analysed through 3D measurements of void volume and tap density. This study has demonstrated for the first time that XCT provides an invaluable, non-destructive and analytical approach to obtain number- and volume-based particle size distributions of DPI formulations in 3D space, and for unique 3D characterisation of powder micro-structure.
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Affiliation(s)
- P Gajjar
- Henry Moseley X-ray Imaging Facility, Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, UK.
| | - I D Styliari
- School of Life and Medical Sciences, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK
| | - T T H Nguyen
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | - J Carr
- Henry Moseley X-ray Imaging Facility, Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, UK
| | - X Chen
- Department of Materials Science & Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - J A Elliott
- Department of Materials Science & Metallurgy, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - R B Hammond
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | - T L Burnett
- Henry Moseley X-ray Imaging Facility, Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, UK
| | - K Roberts
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, UK
| | - P J Withers
- Henry Moseley X-ray Imaging Facility, Department of Materials, School of Natural Sciences, The University of Manchester, Manchester M13 9PL, UK; Henry Royce Institute for Advanced Materials, Oxford Road, Manchester M13 9PL, UK
| | - D Murnane
- School of Life and Medical Sciences, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK.
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Rihawy M, Alzier A, Allaf A. Investigation of chloramphenicol release from PVA/CMC/HEA hydrogel using ion beam analysis, UV and FTIR techniques. Appl Radiat Isot 2019; 153:108806. [DOI: 10.1016/j.apradiso.2019.108806] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 06/17/2019] [Accepted: 07/10/2019] [Indexed: 11/26/2022]
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