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GB/T 21917-2008 English PDF

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GB/T 21917-2008: Method for Determination of Ethyl Maltol in Beverage
Status: Obsolete
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PDF similar to GB/T 21917-2008


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Basic data

Standard ID GB/T 21917-2008 (GB/T21917-2008)
Description (Translated English) Method for Determination of Ethyl Maltol in Beverage
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard X50
Classification of International Standard 67.160
Word Count Estimation 6,666
Date of Issue 2008-05-16
Date of Implementation 2008-11-01
Quoted Standard GB/T 6682
Regulation (derived from) National Standard Approval Announcement 2008 No.9 (Total No.122)
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 provides high-performance liquid chromatographic method ethylmaltol of drinks. This standard applies to carbonic acid, determination of protein drinks ethylmaltol content, juices. This standard detection limit: 5. 0 mg/L.

GB/T 21917-2008: Method for Determination of Ethyl Maltol in Beverage

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Method for Determination of Ethyl Maltol in Beverage ICS 67.160 X50 National Standards of People's Republic of China Determination of ethyl maltol in beverages Posted 2008-05-16 2008-11-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is an informative annex. This standard by the national food safety emergency standardization working group proposed and managed. This standard was drafted. Haidian District, Beijing Products Quality Supervision, Inspection and the (National Food Quality Supervision, Inspection and Safety Center). The main drafters of this standard. Wang Hao, Liu Yanqin, Cao Hong, Yang Hongmei, Yan Long Bao, Mu with Na. Determination of ethyl maltol in beverages

1 Scope

This standard specifies a high performance liquid chromatographic method beverages Ethyl maltol. This standard applies to the determination of carbonated, juice, protein drinks ethyl maltol content. The standard detection limit. 5.0mg/L (signal to noise ratio S/N = 10).

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 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987) Principle 3 The sample was diluted with water, filtered through 0.45μm membrane, liquid chromatography UV detector measurement, external standard.

4 Reagents

4.1 Water. GB/T 6682 provided a water. 4.2 Methanol. chromatographically pure. 4.3 acetonitrile. AR. 4.4 hydrochloric acid solution (5mol/L). weighed about 41.7mL hydrochloric acid, add water volume to 100mL. 4.5 Sodium hydroxide solution (5mol/L). Weigh 200g of sodium hydroxide (NaOH), after fully dissolved add water volume to 1L. 4.6 aqueous sodium dihydrogen phosphate (0.02mol/L). Weigh 3.12g sodium dihydrogen phosphate (NaH2PO4 · 2H2O), add water fully dissolved After the solution volume to 1L. 4.7 ethyl maltol standard stock solution. Weigh ethyl maltol standards (purity > 99.3%) 0.1g (accurate to 0.1000g), dissolve In methanol and set the volume to 100mL volumetric flask, and this solution is equivalent to the concentration of 1.0mg/mL. 4.8 ethyl maltol standard solution. Pipette stock standard solution 0.0,1.0,2.0,4.0,6.0,10.0mL, water volume to 100mL, this corresponds to the concentration of the standard solution series 0.0,10.0,20.0,40.0,60.0,100.0μg/mL.

5 Instruments

5.1 HPLC (with UV detection). 5.2 Column. C18 reverse phase column 5μm, 250mm × 4.6mm (diameter). 5.3 Analysis of balance. a sense of the amount of 0.1mg. 5.4 meter dry nitrogen. Step 6 Analysis 6.1 Sample Preparation 6.1.1 carbonated drinks Imbibe after exhaust sample 5.0mL, diluted with water to 10.0mL, after thorough mixing shake through 0.45μm membrane filter, injection 15μL chromatographic analysis.

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