GB 28302-2012_English: PDF (GB28302-2012)
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Food additives -- Xin, capric glycerides
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GB 28302-2012
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| Standard ID | GB 28302-2012 (GB28302-2012) | | Description (Translated English) | Food additives. Xin, capric glycerides | | Sector / Industry | National Standard | | Classification of Chinese Standard | C54;X40 | | Classification of International Standard | 67.220.20 | | Word Count Estimation | 6,695 | | 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 caprylic acid, capric acid and glycerol reaction to food additives Sim, capric glycerides. |
GB 28302-2012
Food additives .Xin, capric glycerides
National Standards of People's Republic of China
National standards for food safety
Food additives Xin, capric glyceride
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 Xin, capric glyceride
1 Scope
This standard applies to octanoic acid, capric acid and glycerol reaction prepared by the food additives Xin, capric glyceride.
2 Structural formula
H2C-OCOR
HC-OCOR
H2C-OCOR
among them.
R may be R1 or R2
R1. C8H17
R2. C10H21
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 and colorless
Odor tasteless
State liquid state
Take the appropriate sample in a clean, dry white porcelain dish, in the natural light, observe the color
And the state, and smell its taste
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
Peroxide value/(mmol/kg) ≤ 1.0 GB/T 5538
Iodine value/(g/100g) ≤ 1.0 Appendix A A.2
Acid value (in KOH)/(mg/g) ≤ 0.1 Appendix A A.3
Saponification value (in KOH)/(mg/g) 325 to 360 GB/T 5534
Relative density (20 ℃/4 ℃) 0.940 ~ 0.955 GB/T 5009.2
Heavy metals (Pb)/(mg/kg) ≤ 10 GB/T 5009.74
Total arsenic (in As)/(mg/kg) ≤ 2 GB/T 5009.11
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 analysis, the standard solution for the determination of impurities, preparations and products, in the absence of other requirements, according to press
GB/T 601, GB/T 602, GB/T 603. The solution used in the analysis refers to water when it is not specified with any solvent formulation
Solution.
A.2 Determination of iodine value
A.2.1 Reagents and materials
A.2.1.1 Acetic acid.
A.2.1.2 Iodine.
A.2.1.3 Chlorine gas.
A.2.1.4 Cyclohexane-acetic acid mixture. 1 1.
A.2.1.5 Potassium iodide solution. 150 g/L.
A.2.1.6 Starch indicator solution. 10 g/L.
A.2.1.7 sodium thiosulfate standard titration solution. c (Na2S2O3) = 0.1mol/L.
A.2.1.8 Amiodonium chloride solution (Wechsler solution).
Dissolved in 13 g of iodine in 1000 mL of acetic acid (slightly heated when dissolved), and then placed in 1000mL brown bottle, cooled, this is iodine
liquid. Measure 100mL ~.200mL in another brown bottle, set the shade for adjustment purposes. Pass chlorine to the remaining 800mL ~
900 mL of iodine solution, until the solution gradually fades from dark until it is orange-red transparent. The amount of chlorine gas is corrected by the calibration method
Pre-retained iodine solution is adjusted.
Calibration method. take iodine solution and the new preparation of iodine chloride solution (Wechsler solution) 20.0mL, respectively, by adding potassium iodide solution
20mL, and then add 100mL of water, with 0.1mol/L sodium thiosulfate standard titration solution titrated to the solution was pale yellow, add starch
Indicator 1mL, continue to titrate until the blue disappears. The volume of sodium thiosulfate standard titration solution consumed by the newly prepared Wechsler solution
Should be close to 2 times the iodine solution.
A.2.2 Analysis steps
Weigh 2g ~ 3g sample, accurate to 0.001g, placed in iodine bottle, add cyclohexane - acetic acid mixture 20mL. To be dissolved
After adding 25.0mL of Weisheng solution with pipette, shake well and place it in dark place around 25 ℃ for 30min. Then put the iodine from the bottle
Dark out, add potassium iodide solution 20mL, then add water 100mL, with sodium thiosulfate standard titration solution titration, while edge titration to
Solution was pale yellow, add starch instructions 1mL, continue to titrate until the blue disappears. At the same time do blank test.
A.2.3 Calculation of results
The iodine value is expressed in terms of mass fraction w1 and the value in grams per gram (g/100g), calculated according to formula (A.1)
w1 =
(V1-V2) x c1 x 0.1269
m1 ×
100 (A.1)
Where.
V1 --- blank test consumption of sodium thiosulfate standard titration solution volume value in milliliters (mL);
V2 --- the value of sodium thiosulfate standard titration solution consumed in the sample, in milliliters (mL);
c1 --- sodium thiosulfate standard titration solution concentration of the exact value of the unit per mole (mol/L);
0.1269 --- The molar mass of iodine atom in grams per millimolar (g/mmol) [M (I) = 126.9];
m1 --- the mass of the sample, in grams (g);
100 --- quality conversion factor.
The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference in the results of two independent tests obtained under repeatability conditions
The value is not more than 0.05 g/100 g, and more than 0.05 g/100 g is not more than 5%.
A.3 Determination of acid value
A.3.1 Reagents and materials
A.3.1.1 Potassium hydroxide - ethanol standard titration solution. c (KOH) = 0.1 mol/L.
A.3.1.2 95% ethanol. phenolphthalein as an indicator, with potassium hydroxide solution and pale pink.
A.3.1.3 phenolphthalein indicator solution. 10g/L.
A.3.2 Analysis steps
Weigh 15g sample, accurate to 0.0001g, placed in a conical flask, add 95% ethanol about 100mL, heated to dissolve. Join
Phenolphthalein indicator solution of about 6 drops, immediately potassium hydroxide - ethanol standard titration solution titrated to pale pink, to maintain 30s does not fade as the end.
A.3.3 Calculation of results
The acid value is expressed in terms of mass fraction w2 of potassium hydroxide (KOH), expressed in milligrams per gram (mg/g), calculated according to formula (A.2)
w2 = V3 x c2 x 56.1 m2
(A.2)
Where.
V3 --- the value of potassium hydroxide-ethanol standard titration solution consumed in the sample, in milliliters (mL);
c2 --- potassium hydroxide - ethanol standard titration solution concentration of the exact value, the unit is mol per liter (mol/L);
56.1 - the molar mass of potassium hydroxide in milligrams per millimolar (mg/mmol);
m2 --- the mass of the sample, in grams (g).
The experimental results are based on the arithmetic mean of the parallel measurement results. The absolute difference in the results of two independent tests obtained under repeatability conditions
The value is not more than 0.01mg/g.
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