GB/T 22269-2008 English PDF

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GB/T 22269-2008: Turmeric -- Determination of coloring power -- Spectrophotometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 22269-2008	94	Add to Cart	3 days	Turmeric -- Determination of coloring power -- Spectrophotometric method	Valid

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Basic data

Standard ID: GB/T 22269-2008 (GB/T22269-2008)
Description (Translated English): Turmeric -- Determination of coloring power -- Spectrophotometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: B36
Classification of International Standard: 67.220.10
Word Count Estimation: 5,553
Date of Issue: 2008-08-07
Date of Implementation: 2009-03-01
Quoted Standard: GB/T 12729.2; GB/T 12729.3
Adopted Standard: ISO 5566-1982, IDT
Regulation (derived from): National Standard Approval Announcement 2008 No.12 (Total No.125)
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 coloring power of turmeric determined by spectrophotometry. This standard applies to the determination of turmeric tinting strength.

GB/T 22269-2008: Turmeric -- Determination of coloring power -- Spectrophotometric method

---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.
Turmeric. Determination of coloring power. Spectrophotometric method ICS 67.220.10 B36 National Standards of People's Republic of China GB/T 22269-2008/ISO 5566. 1982 Turmeric coloring power determination (ISO 5566. 1982, IDT) Posted 2008-08-07 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 5566. 1982 "Determination of turmeric coloring power spectrophotometry" (in English). This standard is equivalent translation ISO 5566. 1982. For ease of use, this standard made the following editorial changes. a) "this International Standard" be replaced by this standard; b) with a decimal point "." instead of a comma as the decimal point "." The standard proposed by China Federation of Supply and Marketing Cooperatives. The standard by the China Federation of Supply and Marketing Cooperatives Nanjing Institute of comprehensive utilization of wild plants. This standard was drafted. China Federation of Supply and Marketing Cooperatives Nanjing Institute of comprehensive utilization of wild plants. The main drafters of this standard. Chen Shirong, Zhang Weiming. GB/T 22269-2008/ISO 5566. 1982 Turmeric coloring power determination Spectrophotometry

1 Scope

This standard specifies the determination of turmeric coloring power spectrophotometry. This standard applies to the determination of turmeric coloring power.

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 12729.2 Spices and condiments sampling method (GB/T 12729.2-2008, ISO 948. 1980, NEQ) GB/T 12729.3 spices and seasoning powder sample was prepared for analysis (GB/T 12729.3-2008, ISO 2825. 1981, MOD)

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Content in turmeric turmeric class to represent the mass fraction of curcumin. Principle 4 With hot ethanol extract of turmeric pigment diluted extract, spectrophotometric measurement at the maximum absorption wavelength (425nm) at.

5 Reagents

Ethanol. 96% (volume fraction).

6 Instruments

Universal laboratory instruments, other instruments are as follows. 6.1 Extraction round bottom flask. 100mL, which can be accessed reflux condenser. 6.2 Pipette. 5mL. 6.3 Single Groove flask. 100mL, 250mL. 6.4 spectrophotometer. absorbance can be measured at 425nm. 6.5 quartz cuvette. 1cm. 6.6 Analytical balance.

7 Sampling Methods

Execution according to the provisions GB/T 12729.2 of. GB/T 22269-2008/ISO 5566. 1982 ......

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