Properties of gum exudates from selected Albizia species from Tanzania

Mhinzi, Gaspar S.

doi:10.1016/s0308-8146(01)00348-x

Cited by 22 publications

(11 citation statements)

References 12 publications

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“…As mentioned earlier, the higher the amount of the soluble fraction in a gum, the higher is the quality of the gum. The insoluble fractions of albizia amara, albizia harveyi, and albizia zygia are reportedly around 20% w/w (Ashton, Jefferies, Morley, Pass, Phillips, & Power, 1975;Mhinzi, 2002). This may be compared with the insoluble fraction of Tanzanian Acacia gum which is around 10.9% w/w.…”

Section: Resultsmentioning

confidence: 88%

“…The insoluble fraction (insoluble gel þ insoluble solids) may be slightly soluble in hot water. The amount of the water insoluble fraction is taken as the quality index of gums so that a high quality gum has a very low insoluble fraction (Mhinzi, 2002). The objective of this study was to fractionate and characterize the structural properties of almond gum exudates from the sweet almond trees grown in Shahrekord Province, Iran.…”

Section: Introductionmentioning

confidence: 99%

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Fractionation and some physicochemical properties of almond gum (Amygdalus communis L.) exudates

2016

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Section: Resultsmentioning

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Fractionation and some physicochemical properties of almond gum (Amygdalus communis L.) exudates

2016

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“…The moisture content of AS and AG gums was at par with that reported for xanthan gum and gum arabic but lower than that reported for other Albizia species [25,26]. The 7.87% and 8.60% ash content of AS and AG, respectively, which is higher than that of most commercial gums (Table 2), is indicative of the high mineral content of the gums [25][26][27].…”

Section: Chemical Compositionmentioning

confidence: 64%

“…The insoluble gel values observed for AS and AG were higher than that reported for other Albizia species [25,26]. Gums are a complex mixture of polysaccharide with soluble and insoluble fractions; however, the quality of a gum is dependent on the soluble fraction [25].…”

Section: Chemical Compositionmentioning

confidence: 79%

“…The AS and AG gums are richer in calcium and sodium when compared with most of the popular commercial gums such as gum arabic, guar gum, and xanthan gum [25,26,34]. Gums contain various metal ions as neutralized atoms; the nature and amount of these constituents depend on the composition of soil upon which the trees grew [35].…”

Section: Mineral Composition Of the Albizia Gumsmentioning

confidence: 99%

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Characterization of Native and Graft Copolymerized Albizia Gums and Their Application as a Flocculant

Afolabi

Adekanmi

2017

Journal of Polymers

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The functional properties and flocculation efficiency of purified Albizia saman (AS) and Albizia glaberrima (AG) gum exudates modified by graft copolymerization with acrylamide were investigated. The grafting efficiency of AS and AG was 54 and 58%, respectively. The cold water-insoluble gel of native AS and AG was 38.23 and 35.55%, which increased to 39.75 and 40.55% after graft copolymerization. Graft copolymerization of AS and AG gums reduced their oil binding and emulsion capacity from 4.89 and 3.44% to 3.69 and 2.40%, respectively. The dissolution kinetics of the native gums between 40 and 90 ∘ C and 0 and 150 min revealed a steady increase in solubility of the native gums from 6.05 to 9.53 g/L (AS) and 5.90 to 8.78 g/L (AG). The flocculation efficiency of the native AS and AG gums at 50 ppm concentration was 74.30 and 74.73%, which increased to 98.46% and 98.29% in the graft copolymerized gums, respectively.

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