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GB/T 22428.4-2008: Glucose syrups -- Determination of dry matter
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 22428.4-2008 | English | 94 |
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Glucose syrups -- Determination of dry matter
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GB/T 22428.4-2008
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Basic data | Standard ID | GB/T 22428.4-2008 (GB/T22428.4-2008) | | Description (Translated English) | Glucose syrups -- Determination of dry matter | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X11 | | Classification of International Standard | 67.180.20 | | Word Count Estimation | 5,542 | | Date of Issue | 2008-10-19 | | Date of Implementation | 2009-03-01 | | Older Standard (superseded by this standard) | GB/T 12102-1989 | | Adopted Standard | ISO 1742-1980, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008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 method for the determination of dry matter content of glucose syrup vacuum drying method. This standard applies to dried glucose syrup, solid starch sugar and high fructose corn syrup. | GB/T 22428.4-2008: Glucose syrups -- Determination of dry matter---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Glucose syrups. Determination of dry matter
ICS 67.180.20
X11
National Standards of People's Republic of China
GB/T 22428.4-2008/ISO 1742. 1980
Replacing GB/T 12102-1989
Determination of dry matter of glucose syrup
(ISO 1742. 1980, Glucosesyrups-Determinationofdrymatter-
Vacuumovenmethod, 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 1742. 1980 "Determination of dry matter content of glucose syrup vacuum drying method" (in English), because of the more recent version
Old, to meet the current needs, slightly adjusted structure, contents remain the same, only made editorial changes.
This standard replaces GB/T 12102-1989 "dry syrup glucose measurement method."
This standard and GB/T 12102-1989 compared to major changes are as follows.
--- Standard name changed to "dry syrup glucose determination";
--- Improve the standard format, according to the International System of Units standardized units;
--- Added "8 test report."
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, Shandong Zhucheng promoting trade Corn Development Company Limited.
The main drafters of this standard. Guzheng Biao, Hong Yan, Cheng Li, Zhangya Yuan, ZHOU Zhi-guo, Jin Xiaolei.
GB/T 22428.4-2008/ISO 1742. 1980
Determination of dry matter of glucose syrup
1 Scope
This standard specifies the method for the determination of dry matter content of glucose syrup vacuum drying.
This standard applies to dried glucose syrup, starch, sugar and fructose syrup solids.
Principle 2
After the sample was diluted with water, mixed with diatomaceous earth to a dry area increases, then placed in a temperature of 70 ℃, the pressure does not exceed 3400Pa true
Air drying oven to give the residue of the sample quality.
3 Reagents
Use analytical grade reagents and distilled water or equivalent purity.
3.1 celite. The celite was washed repeatedly with water in an amount, with hydrochloric acid solution (3.2) was acidified with a Buchner funnel and filtered until the filtrate so
Litmus paper red. Washed with water several times, until a pH value equal to or slightly larger than 4. The diatomite after washing dry naturally in the air
Dry, before using the oven placed in 105 ℃, under normal pressure and dried overnight, stored in airtight containers.
3.2 hydrochloric acid solution. per liter of water containing concentrated hydrochloric acid (ρ20 = 1.19g/mL) 1mL.
4 Instrument
4.1 Analytical balance.
4.2 Beaker. 100mL.
4.3 The dish. metal (does not occur in a chemical reaction under the conditions tested) or glassware, a depth of 75mm, diameter of 90mm, and with
Closures.
4.4 glass stirring rod. length and weighing dish diameter considerably.
4.5 Electric vacuum oven. temperature can be constant at 70 ℃ ± 1 ℃, and with a calibrated thermometer and a pressure gauge.
Inside the oven should be heated uniformly, and the vacuum pump remains closed after a certain vacuum within a few hours, the shelf inside the oven should be conducive to heat
Weighing dish to pass.
4.6 vacuum pump. pressure inside the oven can be reduced to 3400Pa, or less.
4.7 drying system. the drying column filled with dry silica gel and assembled with a concentrated sulfuric acid gas scrubber connected to the composition, and in turn connected to an electric
Air inlet of the vacuum oven.
There are plenty of valid within the desiccant and a thick porous plate. 4.8 dryer.
5 operation
5.1 Sample preparation
Samples should be thoroughly mixed.
5.2 weighing dish prepared
It weighs approximately 30g dried diatomaceous earth (3.1) in the weighing dish (4.3), the weighing pan, cover and stir bar (4.4) placed in an electric vacuum dry
Dry box (4.5), during 70 ℃ ± 1 ℃, under pressure does not exceed 3400Pa drying 5h. Drying the end, slowly through the air
Through the drying system (4.7) into the oven, so that the internal pressure was returned to normal pressure. Before removing the weighing pan from the oven, cover the lid, stirring rod
Placed thereon, together into the dryer (4.8) in the cooling 1h, weighing, accurate to 0.001g.
GB/T 22428.4-2008/ISO 1742. 1980
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