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GB 28312-2012: Food additives -- Roselle red
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Food additives -- Roselle red
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GB 28312-2012
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Basic data | Standard ID | GB 28312-2012 (GB28312-2012) | | Description (Translated English) | Food additives -- Roselle red | | Sector / Industry | National Standard | | Classification of Chinese Standard | C54;X40 | | Classification of International Standard | 67.220.20 | | Word Count Estimation | 6,646 | | Regulation (derived from) | Ministry of Health Bulletin No. 7 of 2012 | | Issuing agency(ies) | Ministry of Health of the People's Republic of China | | Summary | This Chinese standard applies to Malvaceae Hibiscus herb Roselle (Hibiscus sabdariffa Linn) dry calyx as raw material, water extraction, refining of food additives roselle red. | GB 28312-2012: Food additives -- Roselle red---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.
Food additives.Roselle red
National Standards of People's Republic of China
National standards for food safety
Food Additives Roselle Red
2012-04-25 release
2012-06-25 Implementation
Issued by the Ministry of Health of the People's Republic of China
National standards for food safety
Food Additives Roselle Red
1 Scope
This standard is applicable to the treatment of dried hamata of Hibiscussabdariffa Linn.
Mention, refined from the food additives rose eggplant red.
2 molecular formula and relative molecular mass
2.1 Molecular formula
Ficusoside-3-Dipigoside. C27H31O17
Cyanidinux-3-bisglucoside. C27H30O16
2.2 Relative molecular mass
Ficusoside-3-Dipigoside. 627.53 (according to.2007 International Relative Atomic Mass)
Cyanidin-3-bisglucoside. 610.53 (according to.2007 International Relative Atomic Mass)
3 technical requirements
3.1 sensory requirements. should be consistent with the provisions of Table 1.
Table 1 sensory requirements
The project requires a test method
Colorful purple to red
State powder or liquid
Take the appropriate amount of sample placed in a clean, dry white porcelain dish, in the natural light,
Observe its color and state
3.2 Physical and chemical indicators. should be consistent with the provisions of Table 2.
Table 2 Physical and chemical indicators
project
index
Powder liquid
Testing method
Color Price E1 m520nm Compliant in Appendix A A.3
Dry reduction, w /% ≤ 10 - GB 5009.3 direct drying method a
Burning residue, w /% ≤ 9 6 Appendix A A.4
Total arsenic (in As)/(mg/kg) ≤ 3 GB/T 5009.11
Lead (Pb)/(mg/kg) ≤ 2 GB 5009.12
Note. Commercial rosewood products should be in line with this standard rose eggplant red as raw material, can be made of edible dextrin and made, the color indicators meet the claim.
a Drying temperature and time are 105 ℃ and 3h respectively.
Appendix A
Testing method
A.1 General provisions
The reagents and water used in this standard, when not specified in other requirements, refer to the analysis of pure reagents and GB/T 6682-2008 in the provisions of the three
Water level. Standard titration solution used in the test, the standard solution for the determination of impurities, preparations and products, without any other requirements,
GB/T 601, GB/T 602, GB/T 603. The solution used in the test refers to water when it is not specified with the formulation of the solvent
Solution.
A.2 Identification test
A.2.1 Solubility
Can be dissolved in water and ethanol aqueous solution, insoluble in non-polar solvent.
A.2.2 Color response
To pH3.0 citric acid - disodium hydrogen phosphate buffer solution as the solvent, the preparation of the concentration of 1% of the sample solution, the sample solution should be red; take appropriate
Sample solution, with 1mol/L sodium hydroxide solution into alkaline, the solution was dark green.
A.2.3 Determination of absorption peak
A pH of 3.0 citric acid-disodium hydrogen phosphate buffer solution was used as the solvent to prepare the concentration of 1% of the sample solution, the sample solution at 520nm wavelength
Near maximum absorption peak.
A.3 Determination of color price
A.3.1 Reagents and materials
A.3.1.1 0.2mol/L disodium hydrogen phosphate solution. accurately charged with disodium hydrogen phosphate (Na2HPO4 · 2H2O) 35.60g, dissolved in water and
Constant volume to 1000mL.
A.3.1.2 0.1 mol/L citric acid solution. 21.0140 g of citric acid (C6H8O7 · H2O) was accurately weighed and dissolved in water and allowed to
1000mL.
A.3.1.3 pH3.0 citric acid - disodium hydrogen phosphate buffer solution. take 0.2mol/L disodium hydrogen phosphate solution 4.11mL and 0.1mol/L
Citric acid solution 15.89mL mixed.
A.3.2 Instruments and equipment
Spectrophotometer.
A.3.3 Analysis steps
Accurately weighed 0.1g ~ 0.2g sample, accurate to 0.0001g, with pH3.0 citric acid - disodium hydrogen phosphate buffer solution dissolved, transfer
To 100mL volumetric flask, add pH3.0 citric acid - disodium hydrogen phosphate buffer solution volume to the scale, shake. Take this sample solution at 1cm
Cistern, pH3.0 citric acid - disodium hydrogen phosphate buffer solution as a blank control, with a spectrophotometer in the vicinity of 520nm maximum suction
Absorbance measured absorbance (absorbance should be controlled between 0.3 to 0.7, or should adjust the concentration of sample solution, and then re-measured absorbance).
A.3.4 Calculation of results
The color price is calculated as E1 m520nm according to the formula (A.1)
E1 m520nm = Ac ×
(A.1)
Where.
A - the actual determination of the absorbance of the sample solution;
c - the value of the test solution concentration in grams per milliliter (g/mL);
100 --- concentration conversion factor.
The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
The value is not greater than 2.5%.
A.4 Determination of burning residue
A.4.1 Analysis steps
Weigh 2g sample, accurate to 0.001g, placed in the constant weight of the crucible (liquid products first evaporated), first with a small fire slowly heated to the end
All carbonized, and then carefully into the high temperature furnace at 550 ℃ ~ 600 ℃ burning to constant weight.
A.4.2 Result calculation
The ignition residue is expressed in terms of mass fraction w1 and the value in%, calculated according to formula (A.2)
w1 = m1-m2m3-m2 x
100% (A.2)
Where.
m1 - the value of crucible and burning residue, in grams (g);
m2 - the value of the crucible, in grams (g);
m3 --- crucible and sample quality values, in grams (g).
The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions
The value must not exceed 5% (powder) or 10% (liquid) of the arithmetic mean.
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