Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels
- Autores
- Verma, Anurag; Pandit, Jayant K.; Wahi, Arun K.
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- This study involves an investigation of the effects of crosslinking of gellan gum (GG) with Ca++ or Zn++ on the physical properties of GG gels. GG gels crosslinked with different concentrations of Ca++ or Zn++ were prepared and parameters such as % water holding capacity and penetration thickness were investigated as measures of the extent of interaction of Ca++ or Zn++ with GG molecules. Data generated from the above studies revealed that Zn++ interacted with the GG molecules to a greater extent than Ca++ . In order to further strengthen our finding, we have prepared Zn++ crosslinked and Ca++ crosslinked floating GG beads respectively by ionotropic gelation in the presence of a gas-generating agent (NaHCO3 ) and compared their physico-chemical properties such as density, drug entrapment efficiency and release in 0.1 M HCl (pH 1.2) using metronidazole (MTZ) as a model drug. Experimental data suggested that Zn++ crosslinked floating GG beads were denser and less buoyant than Ca++ crosslinked floating beads but capable of significantly (p < 0.05) improving MTZ entrapment efficiency and sustaining the MTZ release in 0.1 M HCl (pH 1.2) compared to Ca++ crosslinked floating beads. The difference in observed behavior may be attributed to differences in specificity, soft and hard character, enthalpies of hydration and ionization potentials of Ca++ and Zn++ .
Colegio de Farmacéuticos de la Provincia de Buenos Aires - Materia
-
Farmacia
floating beads
gellan gum
penetration thickness
entrapment efficiency
water holding capacity - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- Licencia de distribución no exclusiva SEDICI
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/25642
Ver los metadatos del registro completo
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Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gelsVerma, AnuragPandit, Jayant K.Wahi, Arun K.Farmaciafloating beadsgellan gumpenetration thicknessentrapment efficiencywater holding capacityThis study involves an investigation of the effects of crosslinking of gellan gum (GG) with Ca<sup>++</sup> or Zn++ on the physical properties of GG gels. GG gels crosslinked with different concentrations of Ca<sup>++</sup> or Zn<sup>++</sup> were prepared and parameters such as % water holding capacity and penetration thickness were investigated as measures of the extent of interaction of Ca<sup>++</sup> or Zn<sup>++</sup> with GG molecules. Data generated from the above studies revealed that Zn<sup>++</sup> interacted with the GG molecules to a greater extent than Ca++ . In order to further strengthen our finding, we have prepared Zn<sup>++</sup> crosslinked and Ca<sup>++</sup> crosslinked floating GG beads respectively by ionotropic gelation in the presence of a gas-generating agent (NaHCO3 ) and compared their physico-chemical properties such as density, drug entrapment efficiency and release in 0.1 M HCl (pH 1.2) using metronidazole (MTZ) as a model drug. Experimental data suggested that Zn<sup>++</sup> crosslinked floating GG beads were denser and less buoyant than Ca<sup>++</sup> crosslinked floating beads but capable of significantly (p < 0.05) improving MTZ entrapment efficiency and sustaining the MTZ release in 0.1 M HCl (pH 1.2) compared to Ca++ crosslinked floating beads. The difference in observed behavior may be attributed to differences in specificity, soft and hard character, enthalpies of hydration and ionization potentials of Ca<sup>++</sup> and Zn<sup>++</sup> .Colegio de Farmacéuticos de la Provincia de Buenos Aires2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf815-820http://sedici.unlp.edu.ar/handle/10915/25642enginfo:eu-repo/semantics/altIdentifier/url/http://www.latamjpharm.org/resumenes/31/6/LAJOP_31_6_1_4.pdfinfo:eu-repo/semantics/altIdentifier/issn/0326-2383info:eu-repo/semantics/openAccessLicencia de distribución no exclusiva SEDICIreponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T10:56:18Zoai:sedici.unlp.edu.ar:10915/25642Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 10:56:18.691SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
title |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
spellingShingle |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels Verma, Anurag Farmacia floating beads gellan gum penetration thickness entrapment efficiency water holding capacity |
title_short |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
title_full |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
title_fullStr |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
title_full_unstemmed |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
title_sort |
Effect of crosslinking with Ca<sup>++</sup> and Zn<sup>++</sup> in the formation of gellan gum gels |
dc.creator.none.fl_str_mv |
Verma, Anurag Pandit, Jayant K. Wahi, Arun K. |
author |
Verma, Anurag |
author_facet |
Verma, Anurag Pandit, Jayant K. Wahi, Arun K. |
author_role |
author |
author2 |
Pandit, Jayant K. Wahi, Arun K. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Farmacia floating beads gellan gum penetration thickness entrapment efficiency water holding capacity |
topic |
Farmacia floating beads gellan gum penetration thickness entrapment efficiency water holding capacity |
dc.description.none.fl_txt_mv |
This study involves an investigation of the effects of crosslinking of gellan gum (GG) with Ca<sup>++</sup> or Zn++ on the physical properties of GG gels. GG gels crosslinked with different concentrations of Ca<sup>++</sup> or Zn<sup>++</sup> were prepared and parameters such as % water holding capacity and penetration thickness were investigated as measures of the extent of interaction of Ca<sup>++</sup> or Zn<sup>++</sup> with GG molecules. Data generated from the above studies revealed that Zn<sup>++</sup> interacted with the GG molecules to a greater extent than Ca++ . In order to further strengthen our finding, we have prepared Zn<sup>++</sup> crosslinked and Ca<sup>++</sup> crosslinked floating GG beads respectively by ionotropic gelation in the presence of a gas-generating agent (NaHCO3 ) and compared their physico-chemical properties such as density, drug entrapment efficiency and release in 0.1 M HCl (pH 1.2) using metronidazole (MTZ) as a model drug. Experimental data suggested that Zn<sup>++</sup> crosslinked floating GG beads were denser and less buoyant than Ca<sup>++</sup> crosslinked floating beads but capable of significantly (p < 0.05) improving MTZ entrapment efficiency and sustaining the MTZ release in 0.1 M HCl (pH 1.2) compared to Ca++ crosslinked floating beads. The difference in observed behavior may be attributed to differences in specificity, soft and hard character, enthalpies of hydration and ionization potentials of Ca<sup>++</sup> and Zn<sup>++</sup> . Colegio de Farmacéuticos de la Provincia de Buenos Aires |
description |
This study involves an investigation of the effects of crosslinking of gellan gum (GG) with Ca<sup>++</sup> or Zn++ on the physical properties of GG gels. GG gels crosslinked with different concentrations of Ca<sup>++</sup> or Zn<sup>++</sup> were prepared and parameters such as % water holding capacity and penetration thickness were investigated as measures of the extent of interaction of Ca<sup>++</sup> or Zn<sup>++</sup> with GG molecules. Data generated from the above studies revealed that Zn<sup>++</sup> interacted with the GG molecules to a greater extent than Ca++ . In order to further strengthen our finding, we have prepared Zn<sup>++</sup> crosslinked and Ca<sup>++</sup> crosslinked floating GG beads respectively by ionotropic gelation in the presence of a gas-generating agent (NaHCO3 ) and compared their physico-chemical properties such as density, drug entrapment efficiency and release in 0.1 M HCl (pH 1.2) using metronidazole (MTZ) as a model drug. Experimental data suggested that Zn<sup>++</sup> crosslinked floating GG beads were denser and less buoyant than Ca<sup>++</sup> crosslinked floating beads but capable of significantly (p < 0.05) improving MTZ entrapment efficiency and sustaining the MTZ release in 0.1 M HCl (pH 1.2) compared to Ca++ crosslinked floating beads. The difference in observed behavior may be attributed to differences in specificity, soft and hard character, enthalpies of hydration and ionization potentials of Ca<sup>++</sup> and Zn<sup>++</sup> . |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/25642 |
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http://sedici.unlp.edu.ar/handle/10915/25642 |
dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/url/http://www.latamjpharm.org/resumenes/31/6/LAJOP_31_6_1_4.pdf info:eu-repo/semantics/altIdentifier/issn/0326-2383 |
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info:eu-repo/semantics/openAccess Licencia de distribución no exclusiva SEDICI |
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openAccess |
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Licencia de distribución no exclusiva SEDICI |
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application/pdf 815-820 |
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