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Simultaneous Removal of Polymers with Different Ionic Character from Their Mixed Solutions Using Herb-Based Biochars and Activated Carbons. Molecules 2022; 27:molecules27217557. [DOI: 10.3390/molecules27217557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 10/28/2022] [Accepted: 10/31/2022] [Indexed: 11/06/2022] Open
Abstract
Nettle and the sage herbs were used to obtain carbonaceous adsorbents. For the biochar preparation the precursors were dried and subjected to conventional pyrolysis. Activated carbons were obtained during precursor impregnation with phosphoric(V) acid and multistep pyrolysis. The textural parameters and acidic-basic properties of the obtained adsorbents were studied. The activated carbons prepared from the above herbs were characterized by the largely developed specific surface area. The obtained carbonaceous adsorbents were used for polymer removal from aqueous solution. Poly(acrylic acid) (PAA) and polyethylenimine (PEI) were chosen, due to their frequent presence in wastewater resulting from their extensive usage in many industrial fields. The influence of polymers on the electrokinetic properties of activated carbon were considered. PAA adsorption caused a decrease in the zeta potential and the surface charge density, whereas PEI increased these values. The activated carbons and biochars were used as polymer adsorbents from their single and binary solutions. Both polymers showed the greatest adsorption at pH 3. Poly (acrylic acid) had no significant effect on the polyethylenimine adsorbed amount, whereas PEI presence decreased the amount of PAA adsorption. Both polymers could be successfully desorbed from the activated carbons and biochar surfaces. The presented studies are innovatory and greatly required for the development of new environment protection procedures.
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Mittal H, Al Alili A, Alhassan SM. Capturing water vapors from atmospheric air using superporous gels. Sci Rep 2022; 12:5626. [PMID: 35379827 PMCID: PMC8980045 DOI: 10.1038/s41598-022-08191-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 12/08/2021] [Indexed: 12/04/2022] Open
Abstract
Dehumidification performance of most polymer desiccant materials is unsatisfactory because of the complex adsorption mechanism on polymer surface and non-porous structure. A viable alternative of solid desiccants, especially existing polymer desiccants, for capturing water vapors from moist air is the super-porous gels (SPGs). The presence of interconnected channels of pores in its structure facilitates the transfer of water molecules to the internal structure of SPGs. Therefore, in this research work, we are proposing N-isopropylacrylamide (NIPAM) and acrylamide (AM) based thermoresponsive SPGs as a potential alternative to the existing conventional solid desiccants. To ensure the formation of interconnected capillary channels, the SPGs were synthesized via gas blowing and foaming technique. Surface morphology of the SPGs was studied using scanning electron microscopy (SEM) and the other physio-chemical characteristics were studied using different techniques like fourier Transform Infrared Spectroscopy (FTIR), X-ray diffraction (XRD) and thermo-gravimetric analysis (TGA). Water vapors adsorption properties of the SPGs were explored via adsorption isotherm and kinetics. The adsorption isotherm was found to be of type-III isotherm with a maximum adsorption capacity of 0.75 gw/gads at 25 °C and 90% relative humidity. Experimental isotherm data correlated well with BET, FHH and GAB isotherm models. Adsorption kinetics suggested that the water vapors diffusion followed intraparticle diffusion and liquid field driving mechanisms collectively. SPGs exhibited very good regeneration and reusability for ten continuous adsorption/desorption cycles. Therefore, the dehumidification efficiency of synthesized SPGs shows that they have potential to replace most of the conventional solid desiccant materials in use.
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Affiliation(s)
- Hemant Mittal
- Department of Mechanical Engineering, Khalifa University of Science and Technology, PO Box 12778, Abu Dhabi, United Arab Emirates
| | - Ali Al Alili
- Department of Mechanical Engineering, Khalifa University of Science and Technology, PO Box 12778, Abu Dhabi, United Arab Emirates.
| | - Saeed M Alhassan
- Department of Chemical Engineering, Khalifa University of Science and Technology, PO Box 127788, Abu Dhabi, United Arab Emirates.
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Ruiz-Picazo A, Lozoya-Agullo I, González-Álvarez I, Bermejo M, González-Álvarez M. Effect of excipients on oral absorption process according to the different gastrointestinal segments. Expert Opin Drug Deliv 2020; 18:1005-1024. [PMID: 32842776 DOI: 10.1080/17425247.2020.1813108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
INTRODUCTION Excipients are necessary to develop oral dosage forms of any Active Pharmaceutical Ingredient (API). Traditionally, excipients have been considered inactive and inert substances, but, over the years, numerous studies have contradicted this belief. This review focuses on the effect of excipients on the physiological variables affecting oral absorption along the different segments of the gastrointestinal tract. The effect of excipients on the segmental absorption variables are illustrated with examples to help understand the complexity of predicting their in vivo effects. AREAS COVERED The effects of excipients on disintegration, solubility and dissolution, transit time, and absorption are analyzed in the context of the different gastrointestinal segments and the physiological factors affecting release and membrane permeation. The experimental techniques used to study excipient effects and their human predictive ability are reviewed. EXPERT OPINION The observed effects of excipient in oral absorption process have been characterized in the past, mainly in vitro (i.e. in dissolution studies, in vitro cell culture methods or in situ animal studies). Unfortunately, a clear link with their effects in vivo, i.e. their impact on Cmax or AUC, which need a mechanistic approach is still missing. The information compiled in this review leads to the conclusion that the effect of excipients in API oral absorption and bioavailability is undeniable and shows the need of implementing standardized and reproducible preclinical tools coupled with mechanistic and predictive physiological-based models to improve the current empirical retrospective approach.
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Affiliation(s)
- Alejandro Ruiz-Picazo
- Engineering: Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, Elche, Spain
| | - Isabel Lozoya-Agullo
- Engineering: Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, Elche, Spain
| | - Isabel González-Álvarez
- Engineering: Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, Elche, Spain
| | - Marival Bermejo
- Engineering: Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, Elche, Spain
| | - Marta González-Álvarez
- Engineering: Pharmacokinetics and Pharmaceutical Technology Area, Miguel Hernandez University, Elche, Spain
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Bauhuber S, Warnke G, Berardi A. Disintegrant Selection in Hydrophobic Tablet Formulations. J Pharm Sci 2020; 110:2028-2037. [PMID: 33181185 DOI: 10.1016/j.xphs.2020.11.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/16/2020] [Accepted: 11/02/2020] [Indexed: 02/06/2023]
Abstract
The hydrophobicity of poorly soluble drugs can delay tablets disintegration. We probed here the influence of different disintegrants on the disintegration of challenging hydrophobic formulations. Tablets containing diluents, hydrogenated vegetable oil and either sodium starch glycolate (SSG), croscarmellose sodium (CCS) or crospovidone (XPVP) were prepared. The disintegration time of tablets was tested immediately and after storage at 40 °C and 75% RH in sealed bags. Results show that storage and compression force had a negative effect on disintegration, particularly with 1% disintegrant. The performance of the three disintegrants was in the following order: CCS (best) > SSG > XPVP. For example, tablets containing 1% CCS, SSG and XPVP, compressed at 20 kN, disintegrated in ≈3, ≈12 and ≈69 min, respectively, after two months storage. Settling volume, liquid uptake and effect of storage on physical properties of the pure disintegrants were also studied and revealed that the reduced performance of XPVP is related to: 1) its rapid, yet short-range expansion upon liquid exposure and 2) its change of behaviour on storage. In conclusion, CCS ensured rapid disintegration at low concentration across various compression forces and storage times. Thus, the use of CCS in hydrophobic tablet formulations is recommended.
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Affiliation(s)
- Sonja Bauhuber
- Technical Competence Center, JRS PHARMA GmbH & Co. KG, 73494 Rosenberg, Germany
| | - Gernot Warnke
- Technical Competence Center, JRS PHARMA GmbH & Co. KG, 73494 Rosenberg, Germany
| | - Alberto Berardi
- Department of Pharmaceutical Sciences and Pharmaceutics, Faculty of Pharmacy, Applied Science Private University, Amman 11931, Jordan.
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Mittal H, Babu R, Alhassan SM. Utilization of gum xanthan based superporous hydrogels for the effective removal of methyl violet from aqueous solution. Int J Biol Macromol 2020; 143:413-423. [DOI: 10.1016/j.ijbiomac.2019.11.008] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/28/2019] [Accepted: 11/03/2019] [Indexed: 02/02/2023]
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Velasco-Barraza RD, Vera-Graziano R, López-Maldonado EA, Oropeza-Guzmán MT, Dastager SG, Álvarez-Andrade A, Iglesias AL, Villarreal-Gómez LJ. Study of nanofiber scaffolds of PAA, PAA/CS, and PAA/ALG for its potential use in biotechnological applications. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1378887] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Rodolfo Daniel Velasco-Barraza
- Escuela de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Tijuana, Baja California, México
| | - Ricardo Vera-Graziano
- Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, Distrito Federal, México
| | | | | | - Syed G. Dastager
- National Collection of Industrial Microorganisms (NCIM), CSIR-National Chemical Laboratory, Pune, Maharashtra, India
| | - Adriana Álvarez-Andrade
- Escuela de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Tijuana, Baja California, México
| | - Ana Leticia Iglesias
- Escuela de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Tijuana, Baja California, México
| | - Luis Jesús Villarreal-Gómez
- Escuela de Ciencias de la Ingeniería y Tecnología, Universidad Autónoma de Baja California, Tijuana, Baja California, México
- Facultad de Ciencias Químicas e Ingeniería, Universidad Autónoma de Baja California, Tijuana, Baja California, México
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Sayed E, Haj-Ahmad R, Ruparelia K, Arshad MS, Chang MW, Ahmad Z. Porous Inorganic Drug Delivery Systems-a Review. AAPS PharmSciTech 2017; 18:1507-1525. [PMID: 28247293 DOI: 10.1208/s12249-017-0740-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 02/08/2017] [Indexed: 11/30/2022] Open
Abstract
Innovative methods and materials have been developed to overcome limitations associated with current drug delivery systems. Significant developments have led to the use of a variety of materials (as excipients) such as inorganic and metallic structures, marking a transition from conventional polymers. Inorganic materials, especially those possessing significant porosity, are emerging as good candidates for the delivery of a range of drugs (antibiotics, anticancer and anti-inflammatories), providing several advantages in formulation and engineering (encapsulation of drug in amorphous form, controlled delivery and improved targeting). This review focuses on key selected developments in porous drug delivery systems. The review provides a short broad overview of porous polymeric materials for drug delivery before focusing on porous inorganic materials (e.g. Santa Barbara Amorphous (SBA) and Mobil Composition of Matter (MCM)) and their utilisation in drug dosage form development. Methods for their preparation and drug loading thereafter are detailed. Several examples of porous inorganic materials, drugs used and outcomes are discussed providing the reader with an understanding of advances in the field and realistic opportunities.
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Wiśniewska M, Nowicki P, Nosal-Wiercińska A, Pietrzak R, Szewczuk‐Karpisz K, Ostolska I, Sternik D. Adsorption of poly(acrylic acid) on the surface of microporous activated carbon obtained from cherry stones. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Ahmad M, Rai SM, Mahmood A. Hydrogel Microparticles as an Emerging Tool in Pharmaceutical Field: A Review. ADVANCES IN POLYMER TECHNOLOGY 2015. [DOI: 10.1002/adv.21535] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Mahmood Ahmad
- Faculty of Pharmacy; The Islamia University of Bahawalpur; Bahawalpur Punjab 63100 Pakistan
| | - Sarfraz Muhammad Rai
- Faculty of Pharmacy; The Islamia University of Bahawalpur; Bahawalpur Punjab 63100 Pakistan
| | - Asif Mahmood
- Faculty of Pharmacy; The Islamia University of Bahawalpur; Bahawalpur Punjab 63100 Pakistan
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Pabari RM, Jamil A, Kelly JG, Ramtoola Z. Fast disintegrating crystalline solid dispersions of simvastatin for incorporation into orodispersible tablets. Int J Pharm Investig 2014; 4:51-9. [PMID: 25006549 PMCID: PMC4083534 DOI: 10.4103/2230-973x.133029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
AIM Spray dried solid dispersion (SDP) of crystalline simvastatin (SIM) in a fast disintegrating matrix of superdisintegrants was studied as a method to enhance SIM dispersibility, rheology, compactibility and compressibility for incorporation into orodispersible tablets (ODTs). MATERIALS AND METHODS The superdisintegrants investigated were crospovidone (CP), sodium starch glycollate (SSG) and calcium silicate (CS) were spray dried with simvastatin to form SDPs. RESULTS The SDPs were characterized and the median particle size of SDPs was similar or greater than the SIM, contributing to good rheology of SDPs, while the low bulk density of SDPs indicated a high compactibility. Interestingly electron micrographs for SDPs showed a CP or CS carrier coating of the SIM crystals, contributing to its rheology. Thermal analysis and X-ray diffraction confirmed that SIM was crystalline in the SDPs and no interaction between SIM and any of the carrier(s) was shown by Fourier transform-infra red. Drug content analysis showed a SIM content of 90-95% in SDPs containing CP or CS, while a higher SIM content of 143% was found in SDP containing SSG. When formulated as ODTs, blend containing SIM SDPs in CP showed ease of tableting, regardless of the turret speed. In comparison, tablet blend consisting of a physical mix (PM) of SIM and CP could only be tableted at the lower turret speed of 7 rpm. ODTs formulated using SIM SDPs in CP showed a higher extent of dissolution, compared to the ODTs containing corresponding PM or the commercially available SIM Zocor(®) tablets (ANOVA, P < 0.05). CONCLUSION SDP using disintegrants as carriers may offer an alternative formulation approach for ODTs of poorly soluble drugs.
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Affiliation(s)
- Ritesh M Pabari
- School of Pharmacy, Pharmaceutics Research Laboratory, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Asha Jamil
- School of Pharmacy, Pharmaceutics Research Laboratory, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - John G Kelly
- School of Pharmacy, Pharmaceutics Research Laboratory, Royal College of Surgeons in Ireland, Dublin 2, Ireland
| | - Zebunnissa Ramtoola
- School of Pharmacy, Pharmaceutics Research Laboratory, Royal College of Surgeons in Ireland, Dublin 2, Ireland
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Liang S, Liu Y, Xiang J, Qin M, Yu H, Yan G. Fabrication of a new fluorescent polymeric nanoparticle containing naphthalimide and investigation on its interaction with bovine serum albumin. Colloids Surf B Biointerfaces 2014; 116:206-10. [DOI: 10.1016/j.colsurfb.2014.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 12/05/2013] [Accepted: 01/05/2014] [Indexed: 11/29/2022]
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Development of Orodispersible Tablets of Candesartan Cilexetil- β -cyclodextrin Complex. JOURNAL OF PHARMACEUTICS 2013; 2013:583536. [PMID: 26555987 PMCID: PMC4590806 DOI: 10.1155/2013/583536] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2013] [Revised: 08/24/2013] [Accepted: 08/24/2013] [Indexed: 11/18/2022]
Abstract
The aim of this study was to investigate the use of inclusion complexation technique employing β-cyclodextrin in improving the dissolution profile of candesartan cilexetil, a BCS class-II drug, and to formulate the inclusion complex into orodispersible tablets. The inclusion complexes were formed by physical mixing, kneading, coevaporation, and lyophilisation methods. Inclusion complexes were characterized by FTIR, DSC, XRD, NMR, and mass spectral studies. Inclusion complexes prepared using kneading, and lyophilisation techniques in the molar ratio 1 : 5 with β-cyclodextrin were used for formulating orodispersible tablets by direct compression with different superdisintegrants like croscarmellose sodium, crospovidone, sodium starch glycolate, and low substituted hydroxypropyl cellulose in varying concentrations. The directly compressible powder was evaluated for precompression parameters, and the prepared orodispersible tablets were evaluated for postcompression parameters. Drug-excipient compatibility studies showed no interaction, and characterization proved the formation of inclusion complex. In vitro disintegration time was found to be within 3 minutes, and all the formulations showed complete drug release of 100% within 20 minutes. The optimized formulation was found to be stable after 6 months and showed no significant change in drug content. This work proved β-cyclodextrins to be effective solubilizing agent in improving the solubility of poorly water soluble drugs.
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Pabari RM, Ramtoola Z. Application of face centred central composite design to optimise compression force and tablet diameter for the formulation of mechanically strong and fast disintegrating orodispersible tablets. Int J Pharm 2012; 430:18-25. [DOI: 10.1016/j.ijpharm.2012.03.021] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2012] [Revised: 03/09/2012] [Accepted: 03/10/2012] [Indexed: 11/24/2022]
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Mastropietro DJ, Omidian H, Park K. Drug delivery applications for superporous hydrogels. Expert Opin Drug Deliv 2011; 9:71-89. [PMID: 22145909 DOI: 10.1517/17425247.2012.641950] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
INTRODUCTION Considerable advances have been made to hydrogels with the development of faster swelling superporous hydrogels (SPHs). These new-generation hydrogels have large numbers of interconnected pores, giving them the capacity to absorb large amounts of water at an accelerated rate. This gives SPHs the ability to be used in a variety of novel drug delivery applications, such as gastric retention and peroral intestinal delivery of proteins and peptides. AREAS COVERED This review focuses on the applications of SPHs for drug transport and targeted drug therapies, as well as the characteristics and historical advancements made to SPH synthesis as it pertains to drug delivery. Manufacturing considerations and challenges that must be overcome are also discussed, such as scale-up, biocompatibility and safety. EXPERT OPINION Modern SPHs have high swelling and high mechanical strength making them suitable for many diverse pharmaceutical and biomedical applications. However, demonstrative preclinical animal studies still need to be confirmed in human trials, to further address safety issues and confirm therapeutic success when using SPHs as platforms for drug delivery. The focus of forthcoming applications of SPHs is likely to be in the area of oral site-specific delivery and regenerative medicine.
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Affiliation(s)
- David J Mastropietro
- Nova Southeastern University, College of Pharmacy, Department of Pharmaceutical Sciences, 3200 South University Dr, Fort Lauderdale, FL 33328, USA
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Abstract
The most common and preferred route of drug administration is through the oral route. Orodispersible tablets are gaining importance among novel oral drug-delivery system as they have improved patient compliance and have some additional advantages compared to other oral formulation. They are also solid unit dosage forms, which disintegrate in the mouth within a minute in the presence of saliva due to super disintegrants in the formulation. Thus this type of drug delivery helps a proper peroral administration in pediatric and geriatric population where swallowing is a matter of trouble. Various scientists have prepared orodispersible tablets by following various methods. However, the most common method of preparation is the compression method. Other special methods are molding, melt granulation, phase-transition process, sublimation, freeze-drying, spray-drying, and effervescent method. Since these tablets dissolve directly in the mouth, so, their taste is also an important factor. Various approaches have been taken in order to mask the bitter taste of the drug. A number of scientists have explored several drugs in this field. Like all other solid dosage forms, they are also evaluated in the field of hardness, friability, wetting time, moisture uptake, disintegration test, and dissolution test.
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Affiliation(s)
- Paramita Dey
- Department of Pharmaceutics, Bengal School of Technology, Sugandha, Delhi Road, Hooghly, India
| | - Sabyasachi Maiti
- Gupta College of Technological Sciences, Ashram More, G.T. Road, Asansol, West Bengal, India
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Pourjavadi A, Soleyman R, Barajee GR. Novel Nanoporous Superabsorbent Hydrogel Based on Poly(acrylic acid) Grafted onto Salep: Synthesis and Swelling Behavior. STARCH-STARKE 2008. [DOI: 10.1002/star.200700706] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jeong SH, Takaishi Y, Fu Y, Park K. Material properties for making fast dissolving tablets by a compression method. ACTA ACUST UNITED AC 2008. [DOI: 10.1039/b800209f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Superporous hydrogels (SPHs) were originally developed as a novel drug delivery system to retain drugs in the gastric medium. These systems should instantly swell in the stomach and maintain their integrity in the harsh stomach environment, while releasing the pharmaceutical active ingredient. For years, the synthetic features and properties of these SPH materials have been modified and improved to meet the requirements for gastric retention applications. Furthermore, an instant swelling hydrogel has also shown potential application for peroral intestinal peptide and protein absorption. This review discusses the formulation, characterization, properties and applications of these polymers.
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Affiliation(s)
- Hossein Omidian
- Solid Dose Research and Development, Kos Pharmaceuticals, Inc., 2 Oakwood Boulevard, Hollywood, FL 33020, USA.
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Kheirandish S, Jabbari E. Effect of surface polarity on wettability and friction coefficient of silicone rubber/poly(acrylic acid) hydrogel composite. Colloid Polym Sci 2006. [DOI: 10.1007/s00396-006-1513-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mishra DN, Bindal M, Singh SK, Vijaya Kumar SG. Spray Dried Excipient Base: A Novel Technique for the Formulation of Orally Disintegrating Tablets. Chem Pharm Bull (Tokyo) 2006; 54:99-102. [PMID: 16394558 DOI: 10.1248/cpb.54.99] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Orally disintegrating tablets (ODT) are gaining popularity over conventional tablets due to their convenience in administration and suitability for patients having dysphagia. Moreover no water is required for swallowing the tablets and hence suitable for geriatric, pediatric and traveling patients. The purpose of this study is to assess the suitability of spray dried excipient base in the formulation of ODTs of Valdecoxib (low aqueous solubility) and Metoclopramide (high aqueous solubility). Spray dried excipient base was prepared using Scientech spray drier. Super disintegrants (such as Ac-Di-Sol, Kollidon CL, sodium starch glycolate), diluent (mannitol) alongwith sweetening agent (aspartame) were used in the formulation of tablets. The tablets were evaluated for hardness, friability, water absorption ratio, disintegration time (DT) and in vitro drug release. Using the same excipients, the tablets were prepared by direct compression and were evaluated in the similar way. Maximum drug release and minimum DT were observed with Kollidon CL excipient base as compared to tablets prepared by direct compression, showing the superiority of the spray dried excipient base technique over direct compression technique.
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Affiliation(s)
- Dina Nath Mishra
- Department of Pharmaceutical Sciences, Guru Jambheshwar University, Hisar, Haryana, India.
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