MALTITOL
Prepared at the 46th JECFA (1996), published in FNP 52 Add 4 (1996)
superseding specifications prepared at the 33rd JECFA (1988), published
in FNP 38 (1988) and in FNP 52 (1992). Metals and arsenic specifications
were revised by JECFA in 2001*. An ADI 'not specified' was established at
the 41st JECFA (1993)
SYNONYMS D-Maltitol, hydrogenated maltose, INS No. 965
DEFINITION
Chemical names alpha-D-Glucopyranosyl-1,4-D-glucitol
C.A.S. number 585-88-6
Chemical formula C12H24O11
Structural formula
Formula weight 344.31
Assay Not less than 98.0%
DESCRIPTION White crystalline powder
FUNCTIONAL USES Sweetener, humectant, stabilizer, bulking agent
CHARACTERISTICS
IDENTIFICATION
Solubility (Vol. 4)
Very soluble in water, slightly soluble in ethanol
Melting range (Vol. 4)
148 - 151o
Thin layer chromatography
(Vol. 4)
Passes test
Proceed as directed under Thin Layer Chromatography of Polyols
Use the following:
Standard solution
Dissolve 50 mg of reference standard maltitol (available from US
Pharmacopeial Convention, Inc. 12601 Twinbrook Parkway, Rockville, MD
20852, USA) in 20 ml water
Test solution
Dissolve 50 mg of the sample in 20 ml of water
PURITY
Water (Vol. 4)
Not more than 1.0% (Karl Fischer Method)
Specific rotation (Vol. 4)
[alpha] 20, D: Between +105.5 and +108.5o(5% w/v solution)
Sulfated ash (Vol. 4)
Not more than 0.1%
Test 2 g of sample (Method I)
Chlorides (Vol. 4)
Not more than 50 mg/kg
Test 10 g of sample by the Limit Test using 1.5 ml of 0.01N hydrochloric
acid in the control
Sulfates (Vol. 4)
Not more than 100 mg/kg
Test 10 g of sample by the Limit Test using 2.0 ml of 0.01N sulfuric acid in
the control
Nickel (Vol. 4) Not more than 2 mg/kg
Proceed as directed under Nickel in Polyols
Reducing sugars (Vol. 4)
Not more than 0.1%
Proceed as directed under Reducing Substances (as glucose), Method II.
The weight of cuprous oxide shall not exceed 20 mg
Lead (Vol. 4)
Not more than 1 mg/kg
Determine using an atomic absorption technique appropriate to the
specified level. The selection of sample size and method of sample
preparation may be based on the principles of the method described in
Volume 4, “Instrumental Methods.”
METHOD OF
ASSAY
Determine the maltitol content of the sample using liquid chromatography
(see Volume 4)
Apparatus
Liquid chromatograph (HPLC)
Detection: Differential refractometer maintained at constant temperature
Integrator recorder
Column: AMINEX HPX 87 C (or equivalent resin in calcium form), length
30 cm, internal diameter 9 mm
Eluent: Double distilled degassed water (filtered through Millipore
membrane filter 0.45 µm)
Chromatographic conditions
Column temperature: 85 ± 0.5o ; Eluent flow rate: 0.5 ml/min
Standard preparation
Dissolve an accurately weighed quantity of standard reference maltitol in
water to obtain a solution having known concentration of about 10.0 mg of
maltitol per ml.
Sample preparation
Transfer about 1 g of the sample accurately weighed to a 50 ml volumetric
flask, dilute with water to volume and mix.
Procedure
Separately inject equal volumes (about 20 µl) of the sample preparation
and the standard preparation into the chromatograph. Record the
chromatograms and measure the responses of the maltitol peak. Calculate
the quantity, in mg, of maltitol in the portion of sample taken by the
following formula:
where
C = the concentration, in mg per ml, of maltitol in the standard preparation
RU = the peak response of the sample preparation
RS = the peak response of the standard preparation
*The specification for Maltitol was not revised in 2001. This revision will be
adopted by the 67th JECFA (2006).
MALTITOL
SYNONYMS
DEFINITION
Chemical names
C.A.S. number
Chemical formula
Structural formula
Formula weight
Assay
DESCRIPTION
FUNCTIONAL USES
CHARACTERISTICS
IDENTIFICATION
Standard solution
Test solution
PURITY
Nickel (Vol. 4)
METHOD OF
ASSAY
Apparatus
Standard preparation
Sample preparation
Procedure