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GB 29226-2012: Food additive calcium aspartate
Status: Valid
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Food additive calcium aspartate
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Basic data
Standard ID: GB 29226-2012 (GB29226-2012)
Description (Translated English): Food additive calcium aspartate
Sector / Industry: National Standard
Classification of Chinese Standard: X40
Classification of International Standard: 67.220.20
Word Count Estimation: 7,724
Regulation (derived from): Ministry of Health Bulletin No. 23 of 2012
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This Chinese standard applies to L- aspartic acid with calcium hydroxide or calcium oxide or calcium carbonate as raw material, chelation reaction obtained a food additive calcium aspartate.
GB 29226-2012: Food additive calcium aspartate
---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 additive calcium aspartate
National Standards of People's Republic of China
National standards for food safety
Food Additives Calcium aspartate
2012-12-25 release
2013-01-25 Implementation
Issued by the Ministry of Health of the People's Republic of China
National standards for food safety
Food Additives Calcium aspartate
1 Scope
This standard applies to L-aspartic acid and calcium hydroxide or calcium oxide or calcium carbonate as raw material, the chelating reaction prepared by the food Tim
Addition of calcium aspartate.
2 chemical name, molecular formula, structural formula and relative molecular mass
2.1 Chemical name
Calcium aspartate
2.2 Molecular formula
C8H12O8N2Ca
2.3 Structural formula
2.4 Relative molecular mass
304.2 (according to the.2007 international relative atomic mass)
3 technical requirements
3.1 sensory requirements
Shall comply with the provisions of Table 1.
Table 1 sensory requirements
The project requires a test method
Color white
State powder
Take the appropriate sample in a clean, dry white porcelain dish, in the natural light, observe its color and
status
3.2 Physical and chemical indicators
Shall comply with the provisions of Table 2.
Table 2 Physical and chemical indicators
Item Index Test Method
Calcium (in terms of Ca), w /% 12.0 to 13.8 Appendix A, A.3
L-aspartic acid content, w /% ≥ 79.0 Appendix A A.4
Specific rotation αm (20 ° C, D)/[(°) · dm2 · kg-1] 19.0 to 23.0 GB/T 613
Moisture, w /% ≤ 6.0 GB 5009.3 Direct drying method
pH 6.0 to 7.5 GB/T 9724
Lead (Pb)/(mg/kg) ≤ 2 GB 5009.12
Total arsenic (in As)/(mg/kg) ≤ 1 GB/T 5009.11
Appendix A
Testing method
A.1 General provisions
Unless otherwise stated, only the reagents identified as analytical reagents and the tertiary water specified in GB/T 6682-2008 are used in the analysis. test
Method used in the standard titration solution, impurity determination standard solution, preparation and products, without any other requirements, according to GB/T 601,
GB/T 602 and GB/T 603; the solution used in the absence of specified solvent, refers to the aqueous solution.
A.2 Identification test
A.2.1 Reagents and materials
A.2.1.1 Indanetone solution. 20 g/L.
A.2.1.2 Platinum wire.
A.2.2 Identification method
A.2.2.1 Indanone test
Weigh about 1g sample, accurate to 0.1g, dissolved in 1000mL water, take this solution 5mL, add 1mL indanetrione solution, heating
To boiling, about 3min after the purple.
A.2.2.2 Calcium salt reaction
Take platinum wire dipped in a little sample, burning on a colorless flame, the flame was brick red.
A.3 Determination of calcium content
A.3.1 Methodological Summary
This method uses a small amount of magnesium as a co-indicator, that is, magnesium ions and chromium black T to produce a stable complex to indicate color changes, with ethylenediamine
(EDTA) standard titration solution titration, according to ethylenediamine tetraacetic acid disodium (EDTA) standard titration solution consumption of the amount of calculation
Calcium content.
A.3.2 Reagents and materials
A.3.2.1 Triethanolamine.
A.3.2.2 Magnesium Sulfate Solution. 120 g/L.
A.3.2.3 Ammonia-Ammonium Chloride Buffer. pH = 10.0.
A.3.2.4 Ethylenediamine tetraacetic acid disodium (EDTA) standard titration solution. c (EDTA) = 0.05 mol/L.
A.3.2.5 Chromium Black T Indicator. 5 g/L.
A.3.3 Analysis steps
2 drops of magnesium sulfate solution, add ammonia - ammonium chloride buffer 15mL, plus chromium black T indicator solution 2 drops, with EDTA standard solution titration to
Pure blue; another sample 0.35g, accurate to 0.0002g, add water 30mL to dissolve, add triethanolamine 5 drops, and with the above titration
Of magnesium sulfate solution, and then EDTA standard solution titration, to the color from purple to pure blue is the end. While doing blank
experiment.
A.3.4 Calculation of results
Calcium (in terms of Ca) content of the mass fraction w, according to formula (A.1) calculation.
w =
(V-V0) × c × M
1000 × m ×
100% (A.1)
Where.
V --- sample consumption EDTA standard solution titration solution volume value in milliliters (mL);
V0 --- blank test consumption EDTA standard solution titration solution volume value in milliliters (mL);
c - the concentration of EDTA standard solution in moles per liter (mol/L);
M - the molar mass of calcium in grams per mole (g/mol) [M (Ca) = 40.1];
m - the mass of the sample, in grams (g);
1000 --- conversion factor.
The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 0.3%.
A.4 Determination of L-aspartic acid content
A.4.1 Methodological Summary
Calcium aspartate reacts with excess copper sulphate to form soluble calcium aspartate, which reacts with potassium iodide and is labeled with sodium thiosulfate
Quasi-solution titration, according to sodium thiosulfate standard titration solution consumption, calculate the L-aspartic acid content.
A.4.2 Reagents and materials
A.4.2.1 Potassium iodide.
A.4.2.2 Glacial acetic acid.
A.4.2.3 Copper sulfate solution. 0.1 mol/L.
A.4.2.4 Sodium hydroxide solution. 1 mol/L.
A.4.2.5 Sodium hydroxide solution. 0.1 mol/L.
A.4.2.6 sodium thiosulfate standard titration solution. c (Na2S2O3) = 0.02mol/L.
A.4.2.7 Boric acid - potassium chloride buffer solution (pH 9.0). Weigh 3.09 g of boric acid, add 0.1mol/L potassium chloride 500mL, add 210mL
0.1 mol/L sodium hydroxide.
A.4.2.8 Starch indicator. 1 g/L.
A.4.2.9 phenolphthalein indicator solution. 5g/L.
A.4.3 Analysis steps
Weigh the appropriate amount of sample (about aspartic acid ≤ 100mg), accurate to 0.0002g, add water and set capacity of 30mL volume. will
The sample solution was placed in a 150 mL Erlenmeyer flask, 5 mL of copper sulfate solution was added, 2 drops of phenolphthalein indicator solution, and adjusted with 1 mol/L sodium hydroxide solution
Section to the solution was blue and purple, add boric acid - potassium chloride buffer solution 30mL, shake. After standing for 1 h, filter with 30 mL boric acid-potassium chloride
Buffer solution Wash the filter and precipitate, combine the lotion. Add 1.5mL glacial acetic acid and potassium iodide 7.0g, shaking dissolved, with sodium thiosulfate standard
Solution titration, near the end of the point, add starch indicator solution 2mL, continue to titration to blue disappear. While doing blank experiments.
A.4.4 Calculation of results
L-aspartic acid content of the mass fraction w1, according to formula (A.2) calculation.
w1 =
(V-V0) c × M
1000 × m ×
100% (A.2)
Where.
V - sample consumption of sodium thiosulfate standard titration solution volume in milliliters (mL);
V0 --- blank test consumption of sodium thiosulfate standard titration solution volume, in milliliters (mL);
c - sodium thiosulfate standard solution concentration in moles per liter (mol/L);
M-L-aspartic acid molar mass in grams per mole (g/mol) [M (C4H7O4N) = 133.1];
m - the mass of the sample, in grams (g);
1000 --- conversion factor.
The arithmetic mean of the results of two parallel measurements is the result of the report. The absolute difference between the two parallel determinations is not more than 0.3%.
No. 1 amendment
This amendment is approved by the National Health and Family Planning Commission of the People's Republic of China on December 1,.2014, No. 19
The date of approval.
The formula (A.2) of A.4.4 in Appendix A is amended to read as follows.
w1 =
2 × (V - V0) × c × M
1000 × m ×
100% (A.2)
Where.
2 --- conversion factor;
V - sample consumption of sodium thiosulfate standard titration solution volume in milliliters (mL);
V0 --- blank test consumption of sodium thiosulfate standard titration solution volume, in milliliters (mL);
c - sodium thiosulfate standard solution concentration in moles per liter (mol/L);
M-L-aspartic acid molar mass in grams per mole (g/mol) [M (C4H7O4N) = 133.1];
1000 --- conversion factor;
m - the mass of the sample, in grams (g).
......
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