GB/T 22244-2008Determination of procyanidins in health foods (English PDF)
保健食品中前花青素的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
July 31, 2008
Implementation date
November 1, 2008
Scope
GB/T 22244-2008 is the English-translated version of 保健食品中前花青素的测定.
GB/T 22244-2008 is the Chinese standard "Determination of procyanidins in health foods". Its scope clause reads: This standard specifies the method for determination of health food in front of anthocyanins.
This standard applies to grape seed, grape skin, sea buckthorn, rosehip, blueberry, French pine bark extract as the main raw material for the manufacture of security Determination of proanthocyanidins healthy foods.
The standard detection limits. the method detection limit (LOD) was 1.5 × 10-4g/100g, limit of quantification (LOQ) of 5.0 × 10-4g/100g. The linear range of 10µg/mL ~ 150µg/mL.
Principle 2 Proanthocyanidins soluble in water, is the flavan-3-phenyl catechol and epicatechin connected together.
Based on a sample monomeric or polymeric procyanidins Was heated under acidic conditions and catalytic iron salts, C-C bond cleavage to produce a deep red anthocyanin cyanide ion that is a given principle, the use of high Performance liquid chromatography on a C18 reverse phase column separation, at a wavelength of 525nm at the detection of the retention time qualitative, external standard, the measurement sample before Anthocyanin content. Its clauses include reagents and materials; instruments and equipment.
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Document preview — GB/T 22244-2008
National Standard of the People's Republic of China
- ICS
- 67.040
- Classification
- C 53
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 3 Reagents and materials
- 3.1 methanol (CH3OH)
- 3.2 methanol (CH3OH)
- 3.3 n-butanol [CH3 (CH2) 2CH2OH]
- 3.4 hydrochloric acid (HCl)
- 3.5 dichloromethane (CH2Cl2)
- 3.6 isopropyl alcohol [(CH3) 2CHOH]
- 3.7 formic acid (HCOOH)
- 3.8 ammonium ferric sulfate [NH4Fe (SO4) 2 · 12H2O]
- 3.9 Water (H2O)
- 3.11 proanthocyanidins standard
- 4 instruments and equipment
- 4.1 High performance liquid chromatograph
- 4.3 Centrifuge
- 5.1 Sample Processing
1 Scope
This standard specifies the method for determination of health food in front of anthocyanins.
This standard applies to grape seed, grape skin, sea buckthorn, rosehip, blueberry, French pine bark extract as the main raw material for the manufacture of security
Determination of proanthocyanidins healthy foods.
The standard detection limits. the method detection limit (LOD) was 1.5 × 10-4g/100g, limit of quantification (LOQ) of 5.0 ×
10-4g/100g. The linear range of 10µg/mL ~ 150µg/mL.
Principle 2
Proanthocyanidins soluble in water, is the flavan-3-phenyl catechol and epicatechin connected together. Based on a sample monomeric or polymeric procyanidins
Was heated under acidic conditions and catalytic iron salts, C-C bond cleavage to produce a deep red anthocyanin cyanide ion that is a given principle, the use of high
Performance liquid chromatography on a C18 reverse phase column separation, at a wavelength of 525nm at the detection of the retention time qualitative, external standard, the measurement sample before
Anthocyanin content.
3 Reagents and materials
3.1 methanol (CH3OH)
AR.
3.2 methanol (CH3OH)
chromatography.
3.3 n-butanol [CH3 (CH2) 2CH2OH]
AR.
3.4 hydrochloric acid (HCl)
AR.
3.5 dichloromethane (CH2Cl2)
AR.
3.6 isopropyl alcohol [(CH3) 2CHOH]
AR.
3.7 formic acid (HCOOH)
AR.
3.8 ammonium ferric sulfate [NH4Fe (SO4) 2 · 12H2O]
AR.
3.9 Water (H2O)
a laboratory water conductivity (25 °C) of 0.01mS/m.
Volume to 100mL.
3.11 proanthocyanidins standard
Purity >=98%.
3.12
procyanidin standard solution (1.00mg/mL). Weigh 0.01g procyanidin standard (accurate to 0.0001g), with A
Alcohol (3.2) was dissolved and set the volume to 10mL brown volumetric flask, and this solution using now.
4 instruments and equipment
4.1 High performance liquid chromatograph
equipped with a UV detector.
4.2
ultrasonic cleaner.
4.3 Centrifuge
4000r/min.
Step 5 Analysis
5.1 Sample Processing
5.1.1 tablet
Take 20 specimens ground into powder.
5.1.2 Capsule
Take 20 capsule contents, and mix.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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