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GB/T 5512-2008: Inspect of grain and oilseeds -- Determination of crude fat content in grain
Status: Obsolete GB/T 5512: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 5512-2008 | English | 279 |
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Inspect of grain and oilseeds -- Determination of crude fat content in grain
| Obsolete |
GB/T 5512-2008
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| GB/T 5512-1985 | English | 199 |
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Inspection of grain and oilseeds--Methods for determination of crude fat
| Obsolete |
GB/T 5512-1985
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PDF similar to GB/T 5512-2008
Basic data | Standard ID | GB/T 5512-2008 (GB/T5512-2008) | | Description (Translated English) | Inspect of grain and oilseeds -- Determination of crude fat content in grain | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X10 | | Classification of International Standard | 67.040 | | Word Count Estimation | 7,744 | | Date of Issue | 2008-11-04 | | Date of Implementation | 2009-01-20 | | Older Standard (superseded by this standard) | GB/T 5512-1985 | | Quoted Standard | GB 5491 | | Regulation (derived from) | National Standard Approval Announcement 2008 No.18 (Total No.131) | | 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 principles of food in fat content determination, for sampling. And Soxhlet extraction method, straight drip extraction method, reagent extraction method three meter measurement method, operating procedures and the results of calculations. This method is applicable to the determination of the fat content of food. | GB/T 5512-2008: Inspect of grain and oilseeds -- Determination of crude fat content in grain---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.
Inspect of grain and oilseeds. Determination of crude fat content in grain
ICS 67.040
X10
National Standards of People's Republic of China
Replacing GB/T 5512-1985
Inspection of grain and grain Determination of fat content
Posted 2008-11-04
2009-01-20 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is GB/T 5512-1985 "grain and oilseeds fat test assay" amendments.
This standard GB/T 5512-1985 The main technical differences are as follows.
--- Modify the scope of the standard;
--- Adjust the order in which parts of the text and editorial changes;
--- Deleting the original standard in relation to the fuel;
--- Increase warned principle, for sampling, fat extraction instrument method.
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard was drafted. State Administration of Grain Science Institute.
The main drafters. Zhang Jiaxin, Hao Xicheng, Wu Chunhua.
This standard supersedes previously issued as standard.
--- GB/T 5512-1985.
Inspection of grain and grain Determination of fat content
1 Scope
This standard specifies the principles of food in fat content determination, for sampling, and the soxhlet extraction method, three kinds of straight drip extraction method, extraction apparatus method
Reagent assay methods, procedures, and results of calculations.
This method is applicable to the determination of the fat content of food.
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 5491 grain and oilseeds testing for sampling, and sample method
Principle 3
Pulverized, dispersed and dried samples reflux extraction with an organic solvent, the sample is solvent extraction of the fat out of the recovered solvent
The resulting residue is fat.
4 for sampling
For sampling, and sample execution according to GB 5491.
5 Soxhlet extraction
5.1 Reagents
Anhydrous ether. AR.
NOTE. You can not replace the ether with petroleum ether, because it can not dissolve all plant lipids.
Warning. The solvent should be stored in line with safety regulations solvent or solvent cabinet room in a metal container. Extremely flammable ether and hexane. Enter
Lab for analysis operation can not have open flames. The operator should avoid inhalation of solvent vapors. It should be equipped with explosion-proof lighting, wiring and fan
And a solvent is used for the operation of the ventilation hood. Ether there with prolonged storage produce shock-sensitive, explosive peroxides chemotaxis
Potential. When you open a new storage container is individually checked ether peroxides. A few months unused ether again should be the use of peroxide
Was checked. Do not use ether containing peroxide. Ether containing peroxide should be treated as hazardous substances. It is also possible
Carried out with ether stabilization process. The electrical equipment on the ground, kept in a suitable working position. Follow the manufacturer on all extraction
Equipment installation, operation and safety recommendations. Confirm the cup into a dry extract all Front End solvent completely evaporated, in order to avoid fire or explosion.
5.2 apparatus and appliances
5.2.1 Analytical Balance. dividing the value of 0.1mg.
5.2.2 electric oven.
5.2.3 electric heated water bath.
5.2.4 grinder, mortar.
5.2.5 with color gel dryer.
5.2.6 filter cartridge.
NOTE. If no backup filter paper tube, it is preferable length 28cm, 17cm wide paper, the test tube with a diameter of 2cm, along the long side of paper rolled into a cylindrical shape, drawn tubes to paper
At half height of the cylinder, flattened evacuated part, folded over to make it close to the outer tube, to live with skim line is, the lower knuckle fold up, pressed into a circular base,
Extraction tube Serve diameter 2cm, height of about 7.5cm of paper tube.
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