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GB 1903.14-2016: Food additive -- Calcium citrate
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Food additive -- Calcium citrate
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GB 1903.14-2016
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Basic data | Standard ID | GB 1903.14-2016 (GB1903.14-2016) | | Description (Translated English) | Food additive -- Calcium citrate | | Sector / Industry | National Standard | | Classification of Chinese Standard | X42 | | Word Count Estimation | 7,773 | | Date of Issue | 2016-12-23 | | Date of Implementation | 2017-06-23 | | Older Standard (superseded by this standard) | GB 17203-1998 | | Regulation (derived from) | National Health and Family Planning Commission Notice No.17 of 2016 | | Issuing agency(ies) | National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration | GB 1903.14-2016: Food additive -- Calcium citrate---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 citrate
National Standards of People's Republic of China
National Food Safety Standard
Fortified Food calcium citrate
Published 2016-12-23
2017-06-23 implementation
National Health and Family Planning Commission People's Republic of China
China Food and Drug Administration issued
Foreword
This standard replaces GB 17203-1998 "Food Additives calcium citrate."
Compared with this Standard GB 17203-1998, the main changes are as follows.
--- standard name was changed to "national food safety standards of food nutrition fortifier calcium citrate";
--- modify the sensory requirements;
--- modified calcium citrate content (dry basis), sulfate reduction, the indicator lead (Pb); and
--- remove heavy metals (as Pb), acid insolubles, the solution was clear indicators of the requirements and test methods;
--- modify the identification of test methods;
--- Loss on drying test method references corresponding national standards;
--- part of the standard test method references adjusted to the latest released version.
National Food Safety Standard
Fortified Food calcium citrate
1 Scope
This standard applies to food fortifier calcium citrate with citric acid to calcium carbonate (or calcium oxide, calcium hydroxide) formed by the reaction.
2 chemical name, formula, formula and molecular mass
2.1 Chemical Name
2-hydroxy-1,2,3-tricarboxylic acid, calcium tetrahydrate
2.2 Structure
Formula 2.3
Ca3 (C6H5O7) 2 · 4H2O
2.4 Molecular Weight
570.50 (according to 2011 international relative atomic mass)
3 Technical requirements
3.1 Sensory requirements
Sensory requirements shall comply with the requirements in Table 1.
Table 1 Sensory requirements
Project requires test methods
Color White
State crystal or crystalline powder
Proper amount of sample is placed in a clean, dry porcelain dish, which was observed under natural light color
Chak and state
3.2 Physical and Chemical Indicators
Physical and chemical indicators should be consistent with the provisions of Table 2.
Table 2. Physical and chemical indicators
Item Index Test Method
Calcium citrate content (dry basis), w /% 97.5 ~ 100.5 Appendix A A.3
Drying loss, w /% 10.0 ~ 14.0 GB 5009.3 a direct drying method
Fluoride/(mg/kg) ≤ 30 Appendix A A.4
Lead (Pb)/(mg/kg) ≤ 2.0 GB 5009.75 or GB 5009.12
Arsenic (As)/(mg/kg) ≤ 3.0 GB 5009.76
a drying temperature of 150 ℃, drying time was 4h.
Appendix A
Testing method
A.1 General Provisions
At time of the reagents in water and does not indicate other requirements, refer to three analytical reagent water and GB/T 6682 provisions. Test
When the standard solution, the standard solution, the determination of impurities, formulations and articles not indicate other requirements, are by GB/T 601, GB/T 602 and
GB/T 603 Preparation predetermined. The test does not indicate when the solution which is formulated with a solvent, refer to the aqueous solution.
A.2 Identification Test
A.2.1 solubility test
Samples slightly soluble in water, insoluble in ethanol.
A.2.2 precipitation reaction
A.3.1.5 disodium edetate standard titration solution. c (EDTA-2Na) = 0.05mol/L.
A.3.2 Analysis step
Accurately weighed 0.35g ~ 0.40g previously dried at 150 deg.] C to constant weight of the sample, to the nearest 0.0001g, was added 10mL of water and
2mL hydrochloric acid solution, dissolved diluted with water to 100mL, plus 15mL 5mL triethanolamine and sodium hydroxide solution, shake.
With sodium hydroxide solution to adjust pH > 13, about 0.1g calcium indicator was added, with disodium edetate standard solution was titrated to a purple solution
Pure red to blue as the end point.
A.3.3 calculation results
Calcium citrate content (dry basis) the mass fraction w1, calculated according to formula (A.1).
w1 =
c × V × M
m × 1000 ×
100% (A.1)
Where.
C --- disodium edetate actual concentration of standard titration solution in units of moles per liter (mol/L);
V --- consumption volume disodium edetate standard titration solution in milliliters (mL);
--- molar mass M calcium citrate, units of grams per mole (g/mol) {M [
3Ca3
(C6H5O7) 2] = 166.17};
--- m sample mass in grams (G);
1000 --- volume conversion factor.
The test result to the arithmetic mean of replicates results. Obtained in two independent determination results under repeatability conditions of absolute difference
Value is not greater than 0.5% of the arithmetic mean.
A.4 Determination of fluoride
A.4.1 Reagents and materials
A.4.1.1 perchloric acid.
A.4.1.2 thorium nitrate solution. Weigh thorium nitrate 250mg, add water to dissolve and dilute to volume 1000mL.
Alizarin sulfonate solution A.4.1.3. 1 → 1000.
A.4.1.4 sodium hydroxide solution. Weigh 0.2g of sodium hydroxide, dissolved in water and diluted to volume 1000mL.
Hydrochloric acid solution A.4.1.5. amount of 0.83mL of hydrochloric acid, diluted with water to a volume 100mL.
A.4.1.6 fluoride standard solution. 105 ℃ dried precision learn 1h 22.1 mg sodium fluoride, set 100mL volumetric flask, add water-soluble
Solution and dilute to volume, shake; precise amount of 10mL, set another 100mL volumetric flask, dilute to volume with water and shake. The solution per
Equivalent to 10μg of the fluorine-containing 1mL.
A.4.2 Instruments and Equipment
A.4.2.1 distillation fluoro measuring apparatus (see Figure A.1).
A.4.2.2 colorimetric tube. 50mL.
Description.
1 --- steam generator (1000mL flask);
Tube 2 --- security (f5mm);
3 --- glass tube (φ5mm);
4 --- rubber stopper;
5 --- tee and screw clamp;
6 --- thermometer (200 ℃);
7 --- three bottles (250mL);
8 --- glass bending;
--- straight condenser. 9 (500mm);
10 --- glass bending;
11 --- volumetric flask;
12 --- heating jacket or an electric furnace;
13, 14 --- rubber stopper.
A.1 distillation measuring means fluoro schematic diagram
A.4.3 Analysis step
2.0 g of a sample was weighed (accurate to 0.1 g of), 250mL three-necked flask was placed (see Figure A.1), plus 10 to 20 glass beads, slowly add
Into 5mL perchloric acid, rinsed with 15mL water bottle wall. Good thermometer and glass tops in three bottles and glass balls and mercury thermometer
Bottle three tubes are inserted in the test solution, according to the measured fluoro schematic three bottles are connected with the steam generator and condenser straight, in the steam generator
500mL of water was added, open screw clamp, heated to boiling, screw clamp closed, the water vapor into the three-neck flask, three bottles of liquid by an electric furnace
Holder at 135 ℃ ~ 140 ℃, until about 70mL distillate distillation was stopped. Distillate was diluted with water to 80 mL, mix, pipetted
40mL colorimetric tube was charged to a 50mL 40mL tube in the same aqueous solution as a control, each tube was added 0.1mL alizarin
Solution of sodium, mixing, dropwise addition of sodium hydroxide solution with stirring was added to a tube containing distillate until the sample tube was a control tube and a pink
Activated, then, in a control sample tube of each tube was added 1mL hydrochloric acid solution and mix. A burette in an amount of at 0.05mL per sample tube
The thorium nitrate solution was added, the sample solution turned pink. While the tube is also precisely control the thorium nitrate solution was added the same volume, mix
Uniform, then the standard sodium fluoride solution burette, the color of the sample tube and the control tube as after, the same volume of diluted, mixed, placed so that
After comparing all the disappeared bubble tube, add 1 drop of fluoride standard solution to 2 drops, significant changes occur in the color of the solution control tubes (i.e., control
Was significantly darker than the color of the inner tube color sample tube) can determine the end point, fluoride standard solution consumed must not exceed 3.0 mL, i.e., a fluoride-containing
Less than or equal to 30mg/kg.
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