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GB/T 22328-2008: Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents
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Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents
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GB/T 22328-2008
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Basic data | Standard ID | GB/T 22328-2008 (GB/T22328-2008) | | Description (Translated English) | Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X14 | | Classification of International Standard | 67.200.10 | | Word Count Estimation | 7,792 | | Date of Issue | 2008-08-22 | | Date of Implementation | 2008-12-01 | | Quoted Standard | ISO 5555 | | Adopted Standard | ISO 7366-1987, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008 No.14 (Total No.127) | | 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 test 1-monoglycerides and free glycerol content of the principle, instrument, for sampling, steps, calculated results, repeatability and inspection reports. This standard applies to plant and animal fats and oils, fatty acids esterified with glycerol mutual product, fat. This standard is not suitable for addition to monoglycerides and free glycerol, also containing two or more adjacent hydroxyl chloroform -soluble polyhydroxy compounds, and containing two or more adjacent hydroxyl soluble polyhydroxy compounds in water. | GB/T 22328-2008: Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents
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Animal and vegetable fats and oils. Determination of 1-monoglycerides and free glycerol contents
ICS 67.200.10
X14
National Standards of People's Republic of China
GB/T 22328-2008/ISO 7366. 1987
Animal and vegetable fats
Determination of 1- monoglycerides and free glycerol content
(ISO 7366. 1987, IDT)
Posted 2008-08-22
2008-12-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard is equivalent to international standards ISO 7366. 1987 "Animal and vegetable fats 1- monoglycerides and free glycerol Determination" (English
Version).
For ease of use, the standard ISO 7366. 1987 includes the following editorial changes.
--- Delete foreword international standards;
--- "This International Standard" be replaced by "this standard";
--- With a decimal point instead of a comma as the decimal point in the original ",". ",";
--- "1" and "2 Applications" into the "1 Scope."
The standard proposed by the National Food Authority.
This standard by the National Standardization Technical Committee OILS.
This standard is drafted by. State Administration of Grain Science Institute.
Drafters of this standard. Luan Xia, Wang Yingyao, Xue Yalin.
GB/T 22328-2008/ISO 7366. 1987
Animal and vegetable fats
Determination of 1- monoglycerides and free glycerol content
1 Scope
This standard specifies the determination 1- principle monoglycerides and free glycerol content, reagents, instruments, for sampling, the steps, the results of the calculation, repeat
And inspection reports.
This standard applies to animal fats and oils, fats, fatty acids and glycerol interesterified products.
This standard is not suitable for addition to the monoglycerides and free glycerol, but also contain two or more adjacent hydroxyl groups can be dissolved in chloroform polyhydroxy
Compound, and a polyhydroxy compound containing two or more adjacent hydroxyl groups can be dissolved in water.
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.
ISO 5555 Animal and vegetable fats for sampling
Principle 3
The sample was dissolved in chloroform, acetic acid and extracted with a solution of free glycerol, acetic acid solution with periodic acid oxidation of excess 1-monoglycerides, then
After the addition of potassium iodide, and sodium thiosulfate standard titration of excess periodic acid.
With an excess of periodate oxidation of free glycerol solution, then add potassium iodide and sodium thiosulfate standard solution titration of excess high
Iodate.
4 Reagents
All reagents were of analytical grade. The water used was distilled water or water of at least the same purity.
4.1 chloroform.
4.2 acetic acid. 5% (volume fraction) solution.
4.3 Periodic acid solution. Weigh 2.7g periodic acid (H5IO6) into 1L volumetric flask 50mL dissolved in water and diluted with glacial acetic acid
Scale, mixed thoroughly, dark storage.
4.4 150g/L potassium iodide solution. no iodine or iodate.
4.5 0.1mol/L sodium thiosulfate standard solution.
4.6 10g/L starch solution. 1g of soluble starch was dissolved in 100mL of water, and heated with stirring, was added 0.1g salicylic preservatives, boiled
Boiling 3min, cooled to room temperature.
5 Instruments
Usual laboratory equipment, including in particular the following instruments.
5.1 conical flask. Specification 500mL, with ground glass stopper.
5.2 magnetic stirrer or oscillator.
6 for sampling
According to ISO 5555.
GB/T 22328-2008/ISO 7366. 1987
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