EurekaMag.com logo
+ Site Statistics
References:
52,725,316
Abstracts:
28,411,598
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Characterization and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPER GUM (TM)): Part 1 - Controlled maturation of Acacia senegal var. senegal to increase viscoelasticity, produce a hydrogel form and convert a poor into a good emulsifier






Food Hydrocolloids 21(3): 319-328

Characterization and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPER GUM (TM)): Part 1 - Controlled maturation of Acacia senegal var. senegal to increase viscoelasticity, produce a hydrogel form and convert a poor into a good emulsifier

The Acacia gum (Acacia senegal var. senega, which is a food additive approved by Codex Alimentarius, is defined within the Acacia subgenus (family Legurninosae). The structural characteristics associated with a "poor" and "good" emulsifying A. senegal var. senegal exudate gum are identified and it is shown that it is possible to maturate the "poor" emulsifier in a process comparable to that which occurs to the exudate gum as the age of the tree increases from 1 to 15 years and when the gum is stored naturally after collection. Thus, the molecular parameters of the "good" gum can be matched, and the emulsification effectiveness can attain the level of the "good" emulsifier.The process can be further continued to produce a series of gums of precisely structured molecular dimensions with improved properties and if the maturation is continued can yield a hydrogel form of Acacia. The new forms of A. senegal which are described here, and which have not previously been available are designated Acacia (sell) SUPER GUM (TM) which are constant in properties and with precisely structured molecular dimensions, unlike the naturally occurring gum. The viscosity can be increased up to 20 times compared to the starting material. The controlling factor is the agglomeration of the proteinaceous components within the molecularly disperse system that is A. seneyal gum to increase the amount of arabinogalactan protein (AGP) emulsifying component up to more than double the amount present originally. This results in a dramatic increase in the interfacial surface properties and coverage of the oil droplet in oil in water emulsion. No other chemical change is initiated by the maturation process.


Accession: 012843946



Related references

Aoki, H.; Katayama, T.; Ogasawara, T.; Sasaki, Y.; Al-Assaf, S.; Philllps, G., O., 2007: Characterization and properties of Acacia senegal (L.) willd. var. Senegal with enhanced properties (Acacia (sen) SUPER GUM (TM)): Part 5. Factors affecting the emulsification of Acacia senegal and Acacia (sen) SUPER GUM (TM). Acacia senegal is the major gum arabic species used in commercial emulsification for the production of beverages and flavor concentrates. This paper examines the effect Of gum concentration, molecular weight parameters and homogenization conditio...

Aoki, H.K.tayama, T.O.asawara, T.S.saki, Y.A.-Assaf, S.P.illips, G., 2007: Characterization and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPER GUM). Part 5. Factors affecting the emulsification of Acacia senegal and Acacia (sen) SUPER GUM. Acacia senegal is the major gum arabic species used in commercial emulsification for the production of beverages and flavor concentrates. This paper examines the effect of gum concentration, molecular weight parameters and homogenization condition...

Aoki, H.; Al-Assaf, S.; Katayama, T.; Phillips, G., O., 2007: Characterization and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPER GUM (TM)): Part 2 - Mechanism of the maturation process. The molecular changes which accompany the maturation process to produce Acacia (sen) SUPER GUM (TM) are further described and demonstrate that Acacia senegal can be produced with precisely structured molecular dimensions. The controlling feature...

Cui, S., W.; Phillips, G., O.; Blackwell, B.; Nikiforuk, J., 2007: Characterisation and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPERGUM (TM)): Part 4. Spectroscopic characterisation of Acacia senegal var. senegal and Acacia (sen) SUPERGUM (TM) arabic. The series of control Acacia senegal gums and the samples which had been matured to produce the Acacia (sen) SUPERGUM (TM) samples (FR-2877, FR-2878, FR-2879) described in Part 1-3 of this Series were examined by NMR, FT-IR spectroscopy. No chemi...

Cui, S.; Phillips, G.; Blackwell, B.N.kiforuk, J., 2007: Characterisation and properties of Acacia senegal (L.) Willd. var. senegal with enhanced properties (Acacia (sen) SUPERGUM). Part 4. Spectroscopic characterisation of Acacia senegal var. senegal and Acacia (sen) SUPERGUM arabic. The series of control Acacia senegal gums and the samples which had been matured to produce the Acacia (sen) SUPERGUM™ samples (FR-2877, FR-2878, FR-2879) described in Part 1–3 of this Series were examined by NMR, FT-IR spectroscopy. N...

Pickles, N.; Aoki, H.A.-Assaf, S.S.kata, M.O.asawara, T.I.eland, H.; Coleman, G.; Phillips, G.; Williams, J., 2007: Characterisation and properties of Acacia senegal (L.) Willd. var, senegal with enhanced properties (Acacia (sen) SUPER GUM). Part 3. Immunological characterisation of Acacia (sen) SUPER GUM. Four Acacia senegal samples, one control (Mw 6.2×105 g/mol) and three enhanced samples with different molecular weights ranging from 1.2×106–2.5×106 g/mol were fractionated using hydrophobic interaction chromatogr...

Pickles, N., A.; Aoki, H.; Al-Assaf, S.; Sakata, M.; Ogasawara, T.; Ireland, H.E.yse; Coleman, R., C.; Phillips, G., O.; Williams, J., H.H., 2007: Characterisation and properties of Acacia senegal (L.) Willd. var, senegal with enhanced properties (Acacia (sen) SUPER GUM (TM)): Part 3 Immunological characterisation of Acacia (sen) SUPER GUM (TM). Four Acacia senegal samples, one control (M-w 6.2 x 10(5) g/mol) and three enhanced samples with different molecular weights ranging from 1.2 x 10(6) -2.5 x 10(6) g/mol were fractionated using hydrophobic interaction chromatography (HIC) into two...

Johnson, Wilbur, 2005: Final report of the safety assessment of Acacia Catechu Gum, Acacia Concinna Fruit Extract, Acacia Dealbata Leaf Extract, Acacia Dealbata Leaf Wax, Acacia Decurrens Extract, Acacia Farnesiana Extract, Acacia Farnesiana Flower Wax, Acacia Farnesiana Gum, Acacia Senegal Extract, Acacia Senegal Gum, and Acacia Senegal Gum Extract. These ingredients are derived from various species of the acacia plant. Only material derived from Acacia senegal are in current use according to industry data. The concentration at which these ingredients are reported to be used ranges from 9% in...

Anonymous, 2006: Final report of the safety assessment of Acacia catechu gum, Acacia concinna fruit extract, Acacia dealbata leaf extract, Acacia dealbata leaf wax, Acacia decurrens extract, Acacia farnesiana extract, Acacia farnesiana flower wax, Acacia farnesiana gum, Acacia senegal extract, Acacia senegal gum, and Acacia senegal gum extract. These ingredients are derived from various species of the acacia plant. Only material derived from Acacia senegal are in current use according to industry data. The concentration at which these ingredients are reported to be used ranges from 9% in...

Fall,D.; Diouf,D.; Ourarhi,M.; Faye,A.; Abdelmounen,H.; Neyra,M.; Sylla,S.N.; El-Idrissi,M.M., 2008: Phenotypic and genotypic characteristics of Acacia senegal Willd root-nodulating bacteria isolated from soils in the dryland part of Senegal. Aims: We characterized phenotypically and genotypically root-nodulating bacteria associated with <i>Acacia senegal</i> (L.) Willd. isolated from the soils surrounding <i>A. senegal</i> trees in the dry land area of Senegal....