| SYNONHYMS |
Gum
Arabic, Gum hashab Acacia senegal, Kordofan, GUM NO.414 |
| DEFINITION |
Gum Arabic is dried exudation obtained from the stems and
branches of Acacia senegal. (L) Willenow (Famleguminosae). It consists mainly of
salts of acidie arabinogalactan protein complex, which on hydrolysis yields galactose
arabinose, rhamanose, glucuronic acid and 4-methoxy glucuronic acid. |
| FUNCTIONAL USES |
The article of commerce
is further specified as to Viscosity, Emulsifier, Stabilizer, Thickening and Encapsulating
agent. |
CHARACTERISTICS
INDENTIFICATION TESTS
A-Solubility |
One gram dissolves in two mls of water forming a solution which flows readily and is acid to
litmus insoluble in ethanol. Passes test. |
| B-Hydrolysis
Products |
Not
more than 15% (105oC, 5hrs.) for granular and not more than 10% (105oC,
4hrs.) spray dried material. |
CHEMICAL CHARACTERISTICS
|
TOTAL ASH
|
ACID INSOLUBLE ASH
|
ACID INSOLUBLE MATTER
|
| SPECIFIC ROTATION |
|
|
Not more than 4%
|
Not more than 0.5%
|
Not more than 1%
|
| [a]20 D(-22°) -- (-34°)
(calculate on adried basis.) |
|
| PROTEIN
CONTENT ARSENIC
LEAD |
1.78-2.57%
(N*6.6) Not more than 3 mg./kg. (Method II)
Not more than 10 mg./kg. (prepare a sample solution
as directed for organic compound limit test 10 mg. Of lead on (pb) in the control. |
| HEAVY
METALS |
Not
more than 10 mg./kg. (Test 1.5 g. of the sample as directed in Method II under the test.) |
| STARCH or DEXTRIN TANNIN-BEARING GUMS: |
Passes test. Passes test. |
| MICROBIOLOGICAL
CRITERIA |
Salmonella
sp.p negative in igr.
E Coli negative in igr. |
