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This standard replaces GB 29219-2012 National food safety standard - Food additive - Sorbitol and GB 7658-2005 Food additive - Sorbitol solution.
The following main changes have been made with respect to GB 29219-2012 and GB 7658-2005:
——The standard is renamed as “National food safety standard - Food additive - Sorbitol and sorbitol solution”;
——The "Scope" is modified;
——The sensory requirements are modified;
——The solid matter index of sorbitol solution and the total sugar index of sorbitol are modified;
——The indexes of arsenic, heavy metals, pH and relative density in physical and chemical indexes are deleted;
——The Benedict titration is added for determination of reducing sugar;
——The contents of the testing methods are partially modified.
National food safety standard -
Food additive - Sorbitol and sorbitol solution
1 Scope
This standard is applicable to the food additive sorbitol solution produced by subjecting the glucose, which is produced by hydrolyzing and refining starch milk or starch obtained from corn and other plants, to hydrogenation under the action of catalyst, refining and concentration processes as well as to the food additive sorbitol produced by concentrating, drying and sieving such sorbitol solution.
2 Molecular formula, structural formula and relative molecular mass
2.1 Molecular formula
C6H14O6
2.2 Structural formula
2.3 Relative molecular mass
182.17 (according to the international relative atomic mass in 2007).
3 Technical requirements
3.1 Sensory requirements
Sensory requirements shall meet those specified in Table 1.
Table 1 Sensory requirements
Item Index Inspection method
Sorbitol Sorbitol solution
Color and luster White Colorless and transparent Take proper amount of specimen and observe its color, luster and status in the natural light.
Status Powder, flake or granule with hygroscopicity Viscous liquid
3.2 Physical and chemical indexes
Physical and chemical indexes shall meet those specified in Table 2.
Table 2 Physical and chemical indexes
Item Index Inspection method
Sorbitol Sorbitol solution
Sorbitol content, ω/% ≥ 91.0 (counted by dry basis) 50.0 Annex A, A.3
Moisture content, ω/% ≤ 1.5 31.0 Sorbitol: GB 5009.3, the Second or Fourth Method (arbitration method)
Sorbitol solution: GB/T 6284a or the Fourth Method in GB 5009.3 (arbitration method)
Reducing sugar (counted by glucose), ω/% ≤ 0.3 0.21 Annex A, A.4
Total sugar (counted by glucose), ω/% ≤ 4.4 8.0 Annex A, A.5
Ignition residue, ω/% ≤ 0.1 0.1 Annex A, A.6
Sulfate (counted by SO4)/(mg/kg) ≤ 100 50 Annex A, A.7
Chloride (counted by Cl)/(mg/kg) ≤ 50 10 Annex A, A.8
Nickel (Ni)/(mg/kg) ≤ 2.0 2.0 GB 5009.138
Lead (Pb)/(mg/kg) ≤ 1.0 1.0 GB 5009.12
a Weigh about 1 of specimen, accurate to 0.0002, and dry it at 130℃ ±2℃ for 4h.
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Annex A
Inspection method
A.1 General requirements
For the purpose of this standard, unless otherwise specified, all the reagents and water used refer to analytical reagents and Grade 3 water specified in GB/T 6682. Unless otherwise specified, the standard volumetric solution, the standard solution for determination of impurities, preparations and products used in the tests shall be prepared in accordance with GB/T 601, GB/T 602 and GB/T 603. Unless otherwise specified, the solution used in the tests refers to the aqueous solution.
A.2 Identification test
In the test of sorbitol content determination, the retention time of the main peak in the chromatogram of specimen solution shall be consistent with that in the chromatogram of standard solution.
A.3 Determination of sorbitol content
A.3.1 Method summary
Using high performance liquid chromatographic method, under selected working conditions, with water as mobile phase, the components in the specimen solution are separated by chromatographic column, and detected by differential refractive index detector, and the chromatographic signals are recorded and processed by data processing system.
A.3.2 Reagents and materials
A.3.2.1 Water, Grade I water meeting those specified in GB/T 6682.
A.3.2.2 Standard specimen of sorbitol: mass fraction≥98.0%.
A.3.3 Apparatus
High-performance liquid chromatograph: equipped with differential refractive index detector.
Foreword i
1 Scope
2 Molecular formula, structural formula and relative molecular mass
3 Technical requirements
Annex A Inspection method
Annex B Conversion of cuprous oxide - reducing sugar (counted by glucose) by potassium permanganate method
