Influence of erosion of calcium-induced alginate gel matrix on the release of Brilliant Blue

Murata, Yoshifumi; Nakada, Keiji; Miyamoto, Etsuko; Kawashima, Susumu; Seo, Seung-Hoon

doi:10.1016/0168-3659(93)90067-f

Cited by 71 publications

(32 citation statements)

References 10 publications

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“…Murata et al (1993) found that the release of drug from M-rich alginate gels was slightly faster than that from G-rich alginate gels, despite similarity in their molecular weights. The gelation takes place by forming eggbox junctions to associate the metal ions with the GG blocks of the alginate chain (McDowell 1986;Tonessen and Karslen 2002).…”

Section: Drug Release Studiesmentioning

confidence: 99%

Preparation and Characterisation of Phenytoin-Loaded Alginate and Alginate-Chitosan Microparticles

Cekić¹,

Savić²,

Milić³

et al. 2007

Drug Delivery

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Section: Drug Release Studiesmentioning

confidence: 99%

Preparation and Characterisation of Phenytoin-Loaded Alginate and Alginate-Chitosan Microparticles

Cekić¹,

Savić²,

Milić³

et al. 2007

Drug Delivery

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“…The potential of encapsulated systems using entrapped materials such as living cells has been recognized in many water treatment and fermentation processes. [14][15][16] The use of such a technique in wastewater treatment processes offers a promising way of improving the efficiency of the adsorption process, especially in solving the problems associated with solid-liquid separation in settling tanks.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of dyes and humic acid from water using chitosan‐encapsulated activated carbon

Wu¹,

Tseng

Juang

2002

J of Chemical Tech & Biotech

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The adsorption isotherms and rates of two dyes and humic acid from aqueous solutions onto chitosan-encapsulated activated carbon (CEAC) beads were measured at 30°C. Such beads were prepared by mixing different weight percents of cuttlefish-based chitosan (100%, 80%, 67%, and 55%) and rice-based activated carbons. It was shown that the isotherms of dyes and humic acid were well fitted by the Freundlich equation. The adsorption capacity and rate could be enhanced when activated carbon was encapsulated with chitosan. Four simplified kinetic models including the pseudo-firstorder equation, pseudo-second-order equation, intraparticle diffusion model, and the Elovich equation were tested to follow the adsorption processes. The adsorption of dyes was best described by the Elovich equation, but that of humic acid was best described by the intraparticle diffusion model. The kinetic parameters of each best-fit model were calculated and are discussed in this paper. # 2002 Society of Chemical IndustryKeywords: chitosan-encapsulated activated carbon; adsorption; isotherms; kinetics; dyes; humic acidPseudo-first-order rate constant defined in eqn (7) (min À1 ) k 2 Pseudo-second-order rate constant defined in eqn (9) (kg g À1 min À1

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“…Alginic acid is an algal polysaccharide and a species of polycarboxylic acid. It consists of α-L-guluronic acid (G) and β-D-mannuronic acid (M), and their relative proportion (M/G) ratio determines the biofunctional properties of alginic acid [6]. The gelling properties of alginate depend strongly upon its monomeric composition, sequential arrangements and the lengths of the G-blocks [7].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Plant Extracts Encapsulated into Polymeric Beads for Potential Application on the Skin

et al. 2014

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Abstract:In this study, the in vitro bacterial growth inhibition, antioxidant activity and the content in bioactive components of Plectranthus barbatus, P. hadiensis var. tomentosus, P. madagascarensis, P. neochilus and P. verticillatus aqueous extracts were investigated and compared by three extraction methods (infusion, decoction and microwave extractions). The microwave extract of P. madagascariensis showed the higher antimicrobial activity against the Staphylococcus epidermidis strain with a minimum inhibitory concentration of 40 µg/mL. This extract also showed no toxicity in a general toxicity assay and no considerable cytotoxicity against a human keratinocyte cell line. The antioxidant activity of the extracts was assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH method), and all showed antioxidant activity. The microwave extract of P. madagascariensis was the one with the highest antioxidant activity (IC 50 value of 41.66 µg/mL). To increase extract stability, the microwave P. madagascariensis extract was then successfully encapsulated into alginate beads with high efficiency. This effective and low-cost strategy seems to be easy to extrapolate to an industrial scale with a future application on the skin. OPEN ACCESSPolymers 2014, 6 480

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Influence of erosion of calcium-induced alginate gel matrix on the release of Brilliant Blue

Cited by 71 publications

References 10 publications

Preparation and Characterisation of Phenytoin-Loaded Alginate and Alginate-Chitosan Microparticles

Preparation and Characterisation of Phenytoin-Loaded Alginate and Alginate-Chitosan Microparticles

Adsorption of dyes and humic acid from water using chitosan‐encapsulated activated carbon

Antimicrobial Plant Extracts Encapsulated into Polymeric Beads for Potential Application on the Skin

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