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GB/T 22428.1-2008: Starch hydrolysis products -- Determination of reducing power and dextrose equivalent
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| GB/T 22428.1-2008 | English | 214 |
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Starch hydrolysis products -- Determination of reducing power and dextrose equivalent
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GB/T 22428.1-2008
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Basic data | Standard ID | GB/T 22428.1-2008 (GB/T22428.1-2008) | | Description (Translated English) | Starch hydrolysis products -- Determination of reducing power and dextrose equivalent | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X11 | | Classification of International Standard | 67.180.20 | | Word Count Estimation | 11,166 | | Date of Issue | 2008-10-19 | | Date of Implementation | 2009-03-01 | | Older Standard (superseded by this standard) | GB/T 12099-1989 | | Quoted Standard | GB/T 22427.8; GB/T 22428.3; GB/T 22428.4; ISO 1743 | | Adopted Standard | ISO 5377-1981, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008 No.17 (Total No.130) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the Ryan-reducing power starch hydrolysis products and glucose equivalent method for the determination Eynon titration. This standard applies to starch hydrolysis products. | GB/T 22428.1-2008: Starch hydrolysis products -- Determination of reducing power and dextrose equivalent
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Starch hydrolysis products. Determination of reducing power and dextrose equivalent
ICS 67.180.20
X11
National Standards of People's Republic of China
GB/T 22428.1-2008/ISO 5377. 1981
Replacing GB/T 12099-1989
Starch hydrolysis products reducing power and dextrose equivalent measured
(ISO 5377. 1981, Starchhydrolysisproducts-Determinationofreducingpower
anddextroseequivalent-LaneandEynonconstanttitremethod, IDT)
Posted 2008-10-19
2009-03-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is identical with ISO 5377. 1981 "starch hydrolysis products Determination of reducing power and dextrose equivalent Lane - Eynon titration"
(In English), because of the older version, to meet current needs, slightly adjusted structure, contents remain the same, only made editorial changes.
This standard replaces GB/T 12099-1989 "starch hydrolysis products and reducing power equivalent determination of glucose."
This standard and GB/T 12099-1989 compared to major changes are as follows.
--- Standard name changed to "starch hydrolysis products Determination of reducing power and dextrose equivalent";
--- Improve the standard format, according to the International System of Units standardized units;
--- Added "10 test report";
--- Added Appendix A;
--- Increased by reference.
Appendix A of this standard is an informative annex.
This standard is proposed and managed by China General Chamber of Commerce.
This standard was drafted. Chinese Chamber of Commerce Business Standard centers, food, Jiangnan University, China Starch Industry Association modified starch
Professional Committee, Suzhou peak of Fine Chemical Co., Ltd., Roquette (China) Co., Ltd. Fine Chemicals.
The main drafters of this standard. Guzheng Biao, Hong Yan, Cheng Li, Chen Hongxing, Zhong Yang Chao, Pang Yansheng, Li Yan, Jin Xiaolei.
GB/T 22428.1-2008/ISO 5377. 1981
Starch hydrolysis products reducing power and dextrose equivalent measured
1 Scope
This standard specifies Ryan - Determination of reducing power Eynon (LaneandEynon) titration starch hydrolysis products and glucose equivalents
method.
This standard applies to starch hydrolysis products.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 22427.8 starch and its derivatives sulfated ash determination (GB/T 22427.8-2008, ISO 5809. 1982, IDT)
GB/T 22428.3 Determination of glucose Loss on drying (GB/T 22428.3-2008, ISO 1741. 1980, IDT)
GB/T 22428.4 Determination of dry matter of glucose syrup (GB/T 22428.4-2008, ISO 1742. 1980, IDT)
ISO 1743 Determination of dry matter of glucose syrup index method
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Reducing sugar content. With 100g of anhydrous D- glucose in the sample is expressed in grams.
3.2
Reducing ability starch hydrolysis products. 100g sample to dry anhydrous D- glucose numbers expressed in grams.
Principle 4
Methylene blue as indicator, with a known volume of Fehling reagent titration dextrose solution.
5 Reagents
Use analytical grade reagents and distilled water or equivalent purity.
5.1 Fehling reagent
5.1.1 accumulator A. The copper sulfate pentahydrate (CuSO4 · 5H2O) 69.3g dissolved in water and dilute to 1000.0mL.
5.1.2 liquid B. potassium sodium tartrate tetrahydrate (KNaC4H4O6 · 4H2O) 346.0g and sodium hydroxide (NaOH) 100.0g, add water
Capacity to 1000.0mL. If precipitate filtered before use.
5.1.3 Mixed Fehling's solution. 100mL stock solution A (5.1.1) and 100mL stock solution B (5.1.2) into the dry reagent bottle, and mixed
Uniform.
Note. This solution now with the current.
Anhydrous glucose 5.2 D-
Anhydrous D- glucose should meet the following requirements.
a) concentration of 400g/L, so as to avoid turbidity and sedimentation and maintain a clear colorless solution, by Nessler tube (6.5)
GB/T 22428.1-2008/ISO 5377. 1981
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