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GB 7658-2005 PDF in English

GB 7658-2005 (GB7658-2005) PDF English
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GB 7658-2005: PDF in English

GB 7658-2005
ICS 67.220.20
X 42
Replacing GB 7658-1987
Food additive - Sorbitol solution
食品添加剂 山梨糖醇液
ISSUED ON. JUNE 30, 2005
Issued by. General Administration of Quality Supervision, Inspection and
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Requirements ... 6 
4 Test method ... 7 
5 Inspection rules ... 17 
6 Marks, package, transport and storage ... 19 
Appendix A ... 20 
Some indicators in Table 1 of this Standard are mandatory, and the rest are
This Standard modifies and adopts “Sorbitol solution” (issued in 1991) of Codex
Alimentarius Commission (CAC) (hereinafter referred to as CAC Standard)
(English version).
This Standard is redrafted based on CAC Standard.
Considering China’s national conditions, this Standard makes some
modifications when adopting CAC Standard. The main differences between this
Standard and CAC Standard are as follows.
- Added pH value, total sugar amount, and relative density (3.2 of this
Standard), so as to meet user’s needs;
- Modified indicators of solid content, reducing sugar content, arsenic
content, heavy metal content, chloride content, and sulfate content (3.2 of
this Standard), so as to improve product quality;
- Added weighting method for determination of solid content, taking Karl
Fischer method as arbitration law (4.4 of this Standard) for easy use;
- Determinations of arsenic and heavy metal content shall use China
national standards of product testing methods (4.10 and 4.11 of this
- Determination of reducing sugar content uses permanganate titration to
replace cuprous oxide gravimetric method (4.8 of this Standard), so as to
improve the accuracy of test results.
This Standard replaces GB 7568-1987 Food additive - Sorbitol solution.
Compared with GB 7568-1987, the main changes of this Standard are as
- Added solid content, lead content, chloride content and sulfate content
and corresponding test methods (see 3.2, 4.4, 4.11, 4.13 and 4.14 of this
- Modified reducing content indicator from “≤ 0.63%” to “≤ 0.21%”, total
sugar content indicator from “≤ 2.0%” to “≤ 8.0%”, nickel content indicator
from “≤ 0.0003%” to “2 mg/kg” (1.3 of 1987 edition, 3.2 of this edition);
- Determination of sorbitol content uses high performance liquid
chromatography to replace iodimetry; determinations of reducing sugar
content and total sugar content use potassium permanganate titration to
replace cuprous oxide gravimetric method (2.1, 2.7 and 2.8 of 1987 edition,
4.5, 4.8 and 4.9 of this edition);
- Modified “all items are factory inspection items” to “all items are type
inspection items of which solid content, sorbitol content, reducing sugar
content, total sugar content, nickel content, pH value are factory
inspection items” (see 5.1 of this edition).
Appendix A of this Standard is normative.
This Standard was proposed by China Petroleum and Chemical Industry
This Standard shall be under the jurisdiction of Subcommittee of Organic
Chemicals of the National Technical Committee on Chemical Standards
(SAC/TC 63 / SC 2), and National Institute for Nutrition and Health of Chinese
Center for Disease Control and Prevention.
The drafting organizations of this Standard. Roquette Lianyungang Co., Ltd.,
and Lida (Liuzhou) Chemistry Co., Ltd.
Main drafters of this Standard. Zhuang Defeng, Lao Ming, Li Yan, and Wu
This Standard was issued in April, 1987 for the first time.
Food additive - Sorbitol solution
1 Scope
This Standard specifies requirements, test method, inspection rules as well as
marks, package, transport and storage of food additive - sorbitol solution.
This Standard is applicable to food additive - sorbitol solution which takes
glucose as raw material and is refined by hydrogenation in the presence of
catalyst. This product shall be used as humectant and sweetener during food
Molecular formula. C6H14O6
Structural formula.
Relative molecular mass. 182.17 (according to international relative atomic
mass in 2007)
2 Normative references
The following standards contain the provisions which, through reference in this
Standard, constitute the provisions of this Standard. For dated references, the
subsequent amendments (excluding corrections) or revisions do not apply to
this Standard. However, the parties who enter into agreement based on this
Standard are encouraged to investigate whether the latest versions of these
documents are applicable. For undated reference documents, the latest
versions apply to this Standard.
GB/T 601 Chemical Reagent - Preparations of Standard Volumetric
GB/T 602 Chemical Reagent - Preparations of Standard Solutions for
Impurity (GB/T 602-2002, ISO 6353-1.1982, NEQ)
GB/T 603 Chemical Reagent - Preparations of Reagent Solution for Use in
Test (GB/T 603-2002, ISO 6353-1.1982, NEQ)
Relative density ( ) 1.285~1.315
Reducing sugar (in glucose) mass fraction / % ≤ 0.21
Total sugar (in glucose) mass fraction / % ≤ 8.0
Arsenic (As) mass fraction / % ≤ 0.0002
Lead (Pb) mass fraction / % ≤ 0.0001
Heavy metal (in Pb) mass fraction / % ≤ 0.0005
Chloride (in Cl) mass fraction / % ≤ 0.001
Sulfate (in SO4) mass fraction / % ≤ 0.005
Nickel (Ni) mass fraction / % ≤ 0.0002
Residue on ignition mass fraction / % ≤ 0.10
NOTE. Arsenic (As) mass fraction, lead (Pb) mass fraction and heavy metal (in Pb) mass
fraction are mandatory.
4 Test method
4.1 Warning
Some test procedures prescribed in test method may lead to dangerous
situations. The operator shall take appropriate safety and health
4.2 General provisions
Unless other requirements specified, reagents and water used in this Standard
all refer to analytical-pure reagents and Grade 3 water stipulated in GB/T 6682-
Unless other requirements specified, standard solution, impurity standard
solution, preparations and products used for test shall be prepared based on
the provisions of GB/T 601, GB/T 602 and GB/T 603.
4.3 Identification test
4.3.1 Reagent Sulfuric acid; Ferrous sulfate solution. 80 g/L; Sodium hydroxide solution. 200 g/L;
sample solution through chromatographic column. Use refractive index detector
to detect. Adopt external standard method to quantify. Calculate sorbitol content
in sample.
4.5.2 Reagent Water, GB/T 6682, Grade 2. filtered by 0.45 µm membrane filter, ultra
pure and degasified; Sorbitol standard sample. sorbitol mass fraction ≥98%; Mannitol
4.5.3 Apparatus High performance liquid chromatography (HPLC) High-pressure pump. no pulse, it can maintain flow rate between 0.1
mL/min ~ 10.0 mL/min; Dosing ring. 20 µL; Chromatographic column. see Table 2; Refractive index detector. 500×10-6 △RIU or refractive index
detector with corresponding sensitivity Data processing system. analysis software with Millennium 32, or
chromatography workstation with corresponding functions, or chromatography
data processor. Suction filtration system
Suction filtration system uses cellulose ester membrane filter of which aperture
is 0.45 µm (used for preprocessing of mobile phase water). Filtration system
Filtration system uses cellulose ester membrane filter of which aperture is 0.45
µm (used for preprocessing of sample). Micro syringe
Special for HPLC, 100 µL.
4.5.4 Chromatography conditions
Recommended chromatography conditions are shown in Table 2. Typical HPLC
4.8 Determination of reducing sugar content
4.8.1 Method summary
Heat at a certain temperature, time and concentration. Reducing sugar in
sample shall be oxidized by an excess of Fehling solution, react and produce
cuprous oxide precipitate. Sulfate is reduced to ferrous sulfate by cuprous oxide.
Use potassium permanganate standard solution to generate ferrous sulfate.
Based on the consumption of potassium permanganate standard solution,
check Potassium permanganate cuprous oxide - glucose conversion table, and
glucose mass shall be obtained. By calculation, reducing sugar (in glucose)
content shall be calculated.
4.8.2 Reagent Fehling solution; Ferric sulfate solution. 50 g/L. Weigh 50 g of ferric sulfate. Add 200
mL of water to dissolve. Gradually add 100 mL of sulfuric acid. After mixing and
cooling, add water to dilute to 1000 mL; Potassium permanganate standard solution. c(1/5 KMnO4)=0.1 mol/L.
4.8.3 Apparatus
Sand core crucible. filter plate aperture 5 µm ~ 15 µm (G4).
4.8.4 Analysis procedures Weigh 25 g ~ 50 g of laboratory sample (sample weighing amount is
determined by amount of reducing sugar), accurate to 0.0002 g. Place it in a
250 mL Erlenmeyer flask filled with about 5 mL of water. Well mix it. Add 40 mL of Fehling solution and some glass balls. Completely mix
it. H...
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.