Thermal behavior of gum arabic in comparison with cashew gum

Mothé, Cheila G.; Rao, M. A.

doi:10.1016/s0040-6031(00)00358-0

Cited by 102 publications

(47 citation statements)

References 3 publications

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“…TGA curves indicate that the MD sample has a higher thermogravimetric stability than the AGMD-1 sample, which shows a higher loss of mass percentage (initially 15% between 80 and 120°C) along the temperature changes. This initial loss of mass around 100°C can be related with the water (hydration) loss of arabic gum (Mothé & Rao, 2000). The mass of the MD sample is very stable until 160°C, but a pronounced loss of mass was observed after 200°C for both MD and AGMD-1 samples.…”

Section: Microencapsulate Characterisationmentioning

confidence: 94%

Characterisation and performance assessment of guava (Psidium guajava L.) microencapsulates obtained by spray-drying

Osorio

Forero

Carriazo

2011

Food Research International

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Section: Microencapsulate Characterisationmentioning

confidence: 94%

Characterisation and performance assessment of guava (Psidium guajava L.) microencapsulates obtained by spray-drying

Osorio

Forero

Carriazo

2011

Food Research International

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“…These temperatures were higher than those previously reported by Mothe and Rao. 31 The CG-MO NPs presented a shift in the degradation temperature toward lower values with an increase in the MO content in the NPs. This seemed to point to some sort of interaction between the CG and MO molecules, which ultimately led to a decrease in the CG thermal stability.…”

Section: Thermal Stabilitymentioning

confidence: 93%

Protective effect of cashew gum nanoparticles on natural larvicide from Moringa oleifera seeds

Paula

Rodrigues

Ribeiro

et al. 2011

J of Applied Polymer Sci

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Nanoparticles (NPs) have been used as carriers and as protective coatings of labile substances with applications in pharmacy, medicine, and agriculture. This work focused on the development of an entrapment process for the protection of a natural larvicide extracted from Moringa oleifera (MO) seeds with cashew gum (CG) NPs as a wall material. CG-MO NPs were characterized with regard to their size, morphology, kinetic release, thermal properties, and Stegomya aegypti larvae mortality. The result showed that the CG-MO NPs presented average particle sizes ranging from 288 to 357 nm, with unimodal distribution. MO larvicide active principle loading varied from 2.6 to 4.4%, and the entrapment efficiencies were in the range 39.1-60.8%. In vitro release kinetics showed a Fickian diffusional behavior.The thermal stability of the CG-MO NPs was related to the MO content, where their decomposition temperatures decreased with increasing MO active principle loading. Bioassays with third instar larvae showed that the mortality rate was related to larvicide loading and reached values up to 98 6 3% mortality. The CG-MO NPs showed effective extract entrapment, with satisfactory larvicide effects even after 55 days of sample preparation and were effective as an improved and controlled release larvicide system.

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“…For the gum arabic/antipyrine pellets, one endotherm was detected at 71.0°C (onset 63.7°C), which corresponds to crystallite melting of gum arabic (Fig. 3b) (41). During the first heating of xanthan/antipyrine pellets, a broad endothermic event occurred at 129.4°C (onset 88.7°C) due to moisture evaporation (Fig.…”

Section: Thermal Characterizationmentioning

confidence: 95%

Development of an Abuse- and Alcohol-Resistant Formulation Based on Hot-Melt Extrusion and Film Coating

et al. 2015

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Abstract. This study focused on the development of flexible (i.e., deformable) multiple-unit pellets that feature (i) a prolonged drug release, (ii) drug abuse deterrence, and (iii) a minimal risk of alcohol-induced dose dumping (ADD). Deformable pellets were prepared via an advanced continuous one-step hot-melt extrusion (HME) technique, with the drug (i.e., antipyrine and codeine phosphate) fed as an aqueous solution into the molten matrix material (i.e., cornstarch, gum arabic, and xanthan). Formulations that had suitable mechanical characteristics (i.e., high compression strength) were coated with a flexible Aquacoat ® ARC film to ensure prolonged release and to avoid ADD. The pellets were characterized in terms of their mechanical properties and in vitro drug release behavior in alcoholic media. All formulations were abuse deterrent: they had a high compression strength and grinding the pellets into powder was impossible. Since the pellets comprising gum arabic and xanthan as a matrix did not remain intact during dissolution testing, they had a very fast drug release rate. Cornstarch-based pellets that swelled but remained intact in the dissolution media had a slower drug release. Coated cornstarch-based pellets had a prolonged release over 8 h and resistance to dose dumping in 20 and 40% ethanol. Our results indicate that cornstarch-based pellets manufactured via the advanced HME process followed by coating are a promising formulation that makes tampering difficult due to a high compression strength combined with robustness in alcoholic media.

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Thermal behavior of gum arabic in comparison with cashew gum

Cited by 102 publications

References 3 publications

Characterisation and performance assessment of guava (Psidium guajava L.) microencapsulates obtained by spray-drying

Characterisation and performance assessment of guava (Psidium guajava L.) microencapsulates obtained by spray-drying

Protective effect of cashew gum nanoparticles on natural larvicide from Moringa oleifera seeds

Development of an Abuse- and Alcohol-Resistant Formulation Based on Hot-Melt Extrusion and Film Coating

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