GB/T 22328-2008 English PDF

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GB/T 22328-2008: Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22328-2008	134	Add to Cart	3 days	Animal and vegetable fats and oils -- Determination of 1-monoglycerides and free glycerol contents	Valid

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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

---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.
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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