Topic
Gum arabic
About: Gum arabic is a research topic. Over the lifetime, 2197 publications have been published within this topic receiving 47782 citations. The topic is also known as: acacia gum.
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03 Nov 2011
TL;DR: Gum arabic is the oldest and best known of all natural gums and is made of hardened sap taken from two species of the acacia tree; Acacia senegal and Acacia seyal.
Abstract: Gum arabic is the oldest and best known of all natural gums and is made of hardened sap taken from two species of the acacia tree; Acacia senegal and Acacia seyal. Natural polymers are never uniform or simple, variability in composition, structure and size is the common feature. For example, there are more than 1400 species of Acacia gums in the world and to distinguish between them by chemical analysis has proved a challenging task. There are variations in the amounts of the various sugars and amino acids between species, and for the same species from different countries. The pioneer in analysing literally hundreds of acacias was the late Dr Douglas Anderson.
2 citations
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TL;DR: In this article , the authors studied the effect of coating material composition, oven time and temperature, and drying kinetic on encapsulation of Madeira vine leaf oil using oven drying on the antioxidant characteristics of the encapsulant.
2 citations
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TL;DR: In this paper, the authors investigated the effect of corn starch-hydrocolloid (gum arabic, xanthan gum, and guar gum) complexes with heat-moisture treatment (HMT) on in vivo digestibility.
Abstract: The purpose of this study was to investigate the effect of starch-hydrocolloid (gum arabic, xanthan gum, and guar gum) complexes with heat-moisture treatment (HMT) on in vivo digestibility. In vivo digestibility experiments revealed that the body weight, liver weight, and fat index of mice in the intervention group were significantly reduced compared with those in the high-fat group. Glucose tolerance improved, and blood lipid levels, liver and adipose tissue morphology returned to normal. The results of mRNA expression levels showed that the intervention of corn starch-hydrocolloid complexes after HMT down-regulated the expression level of genes related to fat synthesis compared with the high-fat group, which could decrease lipid deposition and stabilize blood lipid levels. Results revealed that starch–xanthan gum complex (1 : 40 ratio) with HMT could markedly reduce the digestibility of starch. Overall, this study provides new ideas for the application of low-glycemic-index and functional foods.
2 citations
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TL;DR: In this paper , the viscosity of 3 polymers xanthan, guar, and Arabic gums is measured in the lab and experimented with as EOR options.
Abstract: Polymers increase the macroscopic efficiency of the flooding process and increase crude oil recovery. The viscosity of 3 polymers xanthan, guar, and Arabic gums is measured in the lab and experimented with as EOR options. Xanthan and guar gum polymers are measured in weight percentages of 0.1, 0.2, 0.2, 0.4, 0.5, and 1, while gum Arabic is measured in 0.4, 0.5, 1, 5, 10, and 15 weight percentages. The viscosity experiments showed that gum Arabic had the lowest viscosity at 15% wt. Xanthan gum and guar gum had significantly higher viscosities than gum Arabic at corresponding weight percentages. At the same weight of 0.5%, xanthan, guar, and Arabic gums recorded a 63%, 53%, and 46% oil recovery, respectively. Due to the limitations surrounding core flooding experiments such as human error, equipment failure, and measurement of oil recoveries, it is necessary to validate the results obtained with other methods such as reservoir simulation. A reservoir model is built (using Eclipse) and incorporated with polymer and viscosity functions measured in the lab to validate results from the core flooding experiments. Peak oil recovery of 9.96%, 9.95%, and 9.90% was recorded for xanthan, guar, and Arabic gum, respectively, at a weight percentage of 0.5% weight. Also, increasing the wt% of injected polymers increases oil recovery. Results also indicate that the trend of oil recoveries during core flooding follows that observed during reservoir simulation and oil production increased as percentage weight increased for all the polymer cases considered.
2 citations
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26 Feb 2007
TL;DR: A matrix material for Chinese medicinal plaster, particularly to a Chinese medicinal cataplasma matrix containing Chinese medicinal extracts, is described in this article, which has the advantages of good transdermal effect, good air permeability, good affinity with various drugs, safe and environmental-friendly preparation process, no skin irritation, no anaphylaxis, comfortable application, good reusability, stable matrix properties, and no reaction with principal drug.
Abstract: The invention relates to a matrix material for Chinese medicinal plaster, particularly to a Chinese medicinal cataplasma matrix containing Chinese medicinal extracts. The matrix comprises (by weight parts) gelatin 0.8-3, sodium carboxymethyl cellulose 4-21, polyvinylpyrrolidone 0.5-3, gum arabic 2-10, Indian gum 2-10, triethanolamine 1-6, magnesium hydroxide 0.2-2, sodium polyacrylate 2-10, carbomer 2-4, glycerol 30-50, polyvinyl alcohol 5-16, agar 0.2-2, gum tragacanth 0.5-3, colloidal silicon dioxide 2-10, sodium hydroxide 1-3, and water 20-80. The inventive matrix has the advantages of good transdermal effect, good air permeability, good affinity with various drugs, safe and environmental-friendly preparation process, no skin irritation, no anaphylaxis, comfortable application, good reusability, stable matrix properties, and no reaction with principal drug.
2 citations