FCCV标准-Xanthan Gum黄原胶.pdf

504/ Wintergreen Oil/ Monographs
Lactose Not more than 85.0%.
TESTS
Lead Not more than 0.5 mg/kg
Loss on Drying Dry product: Not more than 4.0%.
Assay Determine as directed in Ester Determination under
pH Between 6.2 and 7.2.
Esters, Appendix VI, using about 2 g of sample, accurately
Protein Between 10.0% and 24.0%.
weighed, and 76.08 as the equivalence factor(e) in the calcula-
tion. Modify the procedure by using 50.0 mL of0.5 Nalcoholic
potassium hydroxide and by refluxing on the steam bath for
TESTS
2h
Acid Value Determine as directed under Acid value, Ap-
Ash (Total), Fat, Lactose, Lead, Loss on Drying, and Pro- pendix VI, using bromocresol purple TS as the indicator in-
tein Determine as directed in the monograph for Whey.
Determine as directed under DH Delerminalion, Appen Angular Rotation Determine as directed under Optical
stead of phenolphthalein T
dix, using a 10% aqueous solution if the product is in the (Specific) Rotation, Appendix IIB, using a 100-mm tube.
dry form.
Refractive Index Determine as directed under Refractive
Packaging and Storage Store in tight containers protected Index, Appendix IIB, using an Abbe or other refractometer
of equal or greater accur
from humidity.
Solubility in Alcohol Determine as directed under Solubility
in Alcohol, Appendix VI. One milliliter of sample dissolve
s
in 7 mL of 70% alcohol. The solution may have not more
than a slight cloudine
Specific Gravity Determine by any reliable method(see
Wintergreen Oil
General Provisions).
Gaultheria Oil
Packaging and Storage Store in a cool place protected
from light in full, tight containers
as:[68917-75-9
DESCRIPTION
Wintergreen Oil occurs as a colorless to yellow liquid with Xanthan Gum
the characteristic odor and taste of wintergreen. It is obtained
by maceration and subsequent distillation with steam from INS: 415
the leaves of Gualtheria procumbens L. (Fam. Ericaceae)or
ca:[11138-66-2]
from the bark of Betula lenta L. (Fam. Betulaceae). It boils,
with decomposition, between 219 and 224. It is soluble in
alcohol and in glacial acetic acid, and it is very slightly soluble DESCRIPTION
in water.
Xanthan Gum occurs as a cream colored powder. It is high-
Function Flavoring agent.
molecular-weight polysaccharide gum produced by a pure-
culture fermentation of a carbohydrate with Xanthomonas
campestris, purified by recovery with isopropyl alcohol, dried,
REQUIREMENTS
and milled. It contains D-glucose and D-mannose as the domi-
nant hexose units, along with D-glucuronic acid and pyruvic
Identification
acid, and it is prepared as the sodium, potassium, or calcium
A. Shake 1 drop of sample with about 5 mL of water, and salt. It is readily soluble in hot or cold water, but it is insoluble
add I drop of ferric chloride TS. deep violet color appears in alcohol. Its solutions are neutral.
B. The infrared absorption spectrum of the sample exhibits
relative maxima at the same wavelengths as those of a typical Function Stabilizer; thickener; emulsifier; suspending
spectrum as shown in the section on Infrared Spectra, using agent; bodying agent; foam enhancer.
the same test conditions as specified th