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GB 28315-2012: Food additives -- Lithospermum red
Status: Valid
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB 28315-2012 | English | 169 |
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Food additives -- Lithospermum red
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GB 28315-2012
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Basic data
| Standard ID | GB 28315-2012 (GB28315-2012) |
| Description (Translated English) | Food additives -- Lithospermum red |
| Sector / Industry | National Standard |
| Classification of Chinese Standard | C54;X40 |
| Classification of International Standard | 67.220.20 |
| Word Count Estimation | 7,726 |
| Regulation (derived from) | Ministry of Health Bulletin 2012 No. 7 |
| Issuing agency(ies) | Ministry of Health of the People's Republic of China |
| Summary | This Chinese standard applies to comfrey comfrey (Lithospermum euchromom, Lithospermum erythrohizn, Macrotomia euchroma) roots as raw material, extraction, refining of food additives comfrey red. |
GB 28315-2012: Food additives -- Lithospermum 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 Add.Lithospermum red
National Standards of People's Republic of China
National standards for food safety
Food Additives Lithospermum
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 Lithospermum
1 Scope
This standard applies to Lithospermumaceae (Lithospermumerythrohizn; Macrotomia
euchroma) roots as raw materials, extracted, refined from the food additives Lithospermum.
The molecular formula, structural formula and relative molecular mass of the principal component
2.1 Molecular formula
Lithospermine. C16H16O5
2.2 Structural formula
2.3 Relative molecular mass
Lithospermoline. 288.295 (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
Color deep purple
State oily 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
Item Index Test Method
Color Price E1 m (515 ± 3) nm ≥ 100 Appendix A A.3
Residual Solvent/(mg/kg) ≤ 50 Appendix A A.4
Lead (Pb)/(mg/kg) ≤ 3 GB 5009.12
Total arsenic (in As)/(mg/kg) ≤ 1 GB/T 5009.11
Note. Commercial Lithospermum products should be in line with this standard Lithospermum as raw material, can be added to edible vegetable oil or ethanol and made, the color index
claim.
Appendix A
Testing method
A.1 General provisions
The reagents and water used in this standard refer to the pure reagent and the tertiary water specified in GB/T 6682 when no other requirements are specified.
Standard titration solution used in the analysis, the standard solution for the determination of impurities, preparations and products, in the absence of other requirements, according to GB/T 601,
GB/T 602, GB/T 603. The solution used in this test does not specify what kind of solvent preparation, refers to the aqueous solution.
A.2 Identification test
A.2.1 Solubility
Do not dissolve in water, partially soluble in alkaline aqueous solution, soluble in acetone and n-hexane.
A.2.2 Maximum absorption peak
Take A.3 color price determination of Lithospermum test solution, with a spectrophotometer detection, near 515nm maximum absorption peak.
A.2.3 Chromatographic test
A.2.3.1 Exhibition layer solution
Petroleum ether. ethyl acetate = 9. 1 (volume ratio).
A.2.3.2 Analysis steps
The sample of acetone solution on the silica gel plate, the spot after the silica gel plate has been placed in the chromatography solution saturated chromatography layer, silica gel
Plate showed four spots, the color were lavender, lavender, purple, purple, the Rf values were 0.20,0.35,0.53,0.64.
A.3 Determination of color price
A.3.1 Reagents and materials
acetone.
A.3.2 Instruments and equipment
Spectrophotometer.
A.3.3 Analysis steps
Weigh 0.05g ~ 0.1g sample, accurate to 0.0001g, with acetone set in 100mL volumetric flask, shake, and then from the precise suction
Take 5mL, acetone dilution set in a 100mL volumetric flask, shake, with acetone as the reference solution, with a spectrophotometer in the 515nm ± 3nm
The absorbance was measured in a 1 cm cuvette at the maximum absorption peak in the range. Absorbance should be controlled between 0.3 to 0.7, otherwise it should be adjusted
Sample solution concentration, and then re-measured absorbance.
A.3.4 Calculation of results
The color of the test sample concentration of 1%, with 1cm cuvette, at (515 ± 3) nm measured absorbance E1 m (515 ± 3) nm
, Calculated according to formula (A.1).
E1 m (515 ± 3) nm = Ac ×
(A.1)
Where.
A --- the actual determination of the sample solution of the absorbance value;
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 should not exceed 2% of the arithmetic mean.
A.4 Determination of residual solvent
A.4.1 Sample preparation
After the sample was heated to a flow rate in a 50 ° C water bath, 20 g was weighed into a 100 mL beaker and 40 g was added to the water bath.
50 ° C of cold pressed vegetable oil, the two mixed evenly, weighed diluted 25g pigment into the standard gasification bottle, sealed, to be tested
Sample.
A.4.2 Determination
To prepare the test sample to be tested, the other steps in accordance with GB/T 5009.37-2003 4.8 residual solvent specified method
Determination.
A.4.3 Calculation of results
The solvent residue x1 of the sample to be tested is calculated according to the formula (9) in GB/T 5009.37-2003.
The amount of solvent residue in the sample is calculated according to equation (A.2)
x = x1 × 3 (A.2)
Where.
x1 --- the amount of solvent residue of the diluted sample to be measured as measured by GB/T 5009.37;
3 - the dilution factor of the sample.
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