GB 25541-2010 English PDF

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GB 25541-2010: Polydextrose national food safety standards of food additives
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GB 25541-2010	189	Add to Cart	3 days	Polydextrose national food safety standards of food additives	Valid

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Basic data

Standard ID: GB 25541-2010 (GB25541-2010)
Description (Translated English): Polydextrose national food safety standards of food additives
Sector / Industry: National Standard
Classification of Chinese Standard: X42
Classification of International Standard: 67.220.20
Word Count Estimation: 8,840
Date of Issue: 2010-12-21
Date of Implementation: 2011-02-21
Regulation (derived from): Ministry of Health Bulletin No. 19 of 2010
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This Chinese standard applies to glucose, sorbitol, citric acid or phosphoric acid by mixing, heating at high temperature and purified polydextrose polymerization and neutralization products, food additives after bleaching polydextrose.

GB 25541-2010: Polydextrose national food safety standards of food additives

---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.
Polydextrose national food safety standards of food additives National Food Safety Standard Food additive polydextrose Issued on. 2010-12-21 2011-02-21 implementation National Standards of People's Republic of China People's Republic of China Ministry of Health issued

Foreword

Appendix A of this standard is a normative appendix. National Food Safety Standard Food additive polydextrose

1 Scope

This standard applies to a mixture of glucose, sorbitol, citric acid or phosphoric acid by a certain percentage, at a high temperature heat polymerization and refined Polydextrose and products and food after bleaching additive polydextrose.

2 Normative references

The standard file referenced in the application of this standard is essential. For cited documents with dates, only the date of Version applies to this standard. For undated references, the latest edition (including any amendments) applies to this standard.

3 Technical requirements

3.1 Sensory requirements. comply with Table 1. Table 1 Sensory requirements Project requires test methods White to light yellow color take appropriate sample is placed in a clean, dry white porcelain dish, in natural light Under observe its color and texture, and smell its flavor. Odor no odor Granular or powder state organization 3.2 Physical indicators. to comply with Table 2. Table 2. Physical and chemical indicators

Appendix A

project index Testing method Polydextrose And, after bleaching Polydextrose Polydextrose (dry basis, without ash content), w /% ≥ 90.0 Appendix A A.3 Loss on drying, w /% 4.0 GB 5009.3-2010 Direct drying pH 2.5 ~ 7.0 5.0 ~ 6.0 in Appendix A A.4 Ash, w /% ≤ 0.3 2.0 GB 5009.4 1,6-anhydro -D- glucose (based on the dry, without ash content), w /% ≤ 4.0 A.5 in Appendix A Glucose and sorbitol (dry basis, without ash content), w /% ≤ 6.0 A.5 in Appendix A 5-hydroxymethyl furfural (dry basis, without ash content), w /% ≤ 0.1 0.05 Appendix A A.6 Lead (Pb)/(mg/kg) ≤ 0.5 GB 5009.12 (Normative) Testing method A.1 General Provisions Unless otherwise indicated in the analysis using only recognized as analytical reagents and GB/T 6682-2008 specified in the water. In the analysis Standard titration solution, impurities measured by standard solution, preparations and products, did not indicate when the other requirements, according to GB/T 601, GB/T 602, the provisions of preparation GB/T 603's. This solution was used in the test does not indicate what is formulated with solvent, it refers to an aqueous solution. A.2 Identification Test A.2.1 Reagents and materials a) sulfuric acid. b) acetone. c) phenol solution. 50g/L. d) copper citrate alkaline test solution. weigh 173g sodium citrate (C6H5Na3O7 · 2H2O) and 117g of sodium carbonate (Na2CO3 · H2O), It was dissolved under heating to about 700mL of water, filtered through filter paper, if necessary. In a separate container, weighed 17.3g of copper sulfate (CuSO4 · 5H2O), dissolved in about 100mL of water, and this solution was slowly added to the solution in steady stirring. After cooling, dilute with water to 1000mL, and mix. A.2.2 Analysis step A.2.2.1 Take 1 drop of 100 g/L test solution, add 4 drops of phenol solution, then quickly added 15 drops of sulfuric acid, should produce yellow to deep orange color. A.2.2.2 take 1mL 100 g/L sample solution in 1mL of acetone was added under vigorous stirring, the solution should be clear. In this clear solution was added 2mL acetone, stirred vigorously, the solution immediately milky white turbid. A.2.2.3 Take 1mL 20g/L sample solution was added 4mL copper citrate alkaline test solution, heated to a vigorous boil 2 min ~ 4min, remove the heat Source, allowed to settle, clarified supernatant which should be blue or blue-green. A.3 Determination of polydextrose A.3.1 Reagents and materials a) α-D- glucose standards. mass fraction ≥98.0%. b) phenol. c) sulfuric acid. d) phenol solution. 4g/mL; Accurately weigh 80g of phenol was added 20mL dissolved in water, and mix. A.3.2 Instruments and Equipment Spectrophotometer. A.3.3 Analysis step A.3.3.1 Preparation of standard solution of glucose Weigh the appropriate amount of α-D- glucose standards, dissolved in water formulated to 0.2 mg/mL standard stock solution. Standard formulated into liquid Standard solution concentration series. 5μg/mL, 10μg/mL, 20μg/mL, 30μg/mL, 40μg/mL and 50μg/mL. A.3.3.2 Preparation of test solution Weigh about 0.25 g sample (accurate to 0.000 1g), dissolved in water and dilute to 250mL, and mix with a pipette 10.0mL, Diluted with water and set the volume to 250mL, this is the sample solution. Determination of drawing and sample liquid A.3.3.3 glucose standard curve With pipette 2.0mL series of concentrations of standard solution, sample solution and distilled water (as a blank), were placed without acetone 15 mL screw-cap vials were added 0.12mL phenol solution, cover the stopper and mix gently. Open the cork, quickly added 5.0mL sulfuric acid. Vials tightly, and shake vigorously. Need to bring rubber gloves and other protective gear safety note add sulfuric acid. Vial holder 45min at room temperature and then choose a suitable spectrophotometer solution in each vial in absorbance at 490nm Value, as determined by the addition of distilled phenol - sulfuric acid mixture was blank and reference. The experiment was repeated three times to give a series of concentrations of the standard solution The average value of absorbance and the average absorbance of the sample solution. Mean absorbance of standard solution with a concentration series of value of the vertical axis and the standard concentration of the solution Degree (μg/mL) as the abscissa, the standard curve. A.3.4 Calculation Results Polydextrose content X1 according to formula (A.1) Calculated. LG PPcS YAX 11.1) (10005.11 - × - × = (A.1) Where. X1-- sample of polydextrose content (dry basis, without ash content),%; 1.05-- derived correction factor; A-- absorbance of the sample solution; y-intercept Y-- standard curve; S-- absorbance values of the standard curve slope of the glucose concentration (μg/mL), about 0.02; C-- concentration of the sample solution (based on dry weight loss and ash content of the sample, in terms of dry basis, no concentration of ash content), In micrograms per milliliter (μg/mL); PG, PL-- monomers glucose test were measured and 1,6-anhydro -D- glucose content,%; 1.11--1,6- dehydration -D- glucose conversion factor. A.4 pH measurement It weighs about 10g sample (accurate to 0.00 1g), dissolved in water and dilute to 100mL, shake, measured with pH meter. A.5 1,6- Determination dehydration -D- glucose, glucose and sorbitol in A.5.1 Reagents and materials a) 1,6- -D- glucose dehydration standard. mass fraction ≥98.0%. b) glucose (α-D- glucose) Standards. mass fraction ≥98.0%. c) sorbitol standards. mass fraction ≥98.0%. d) sulfuric acid. A.5.2 Instruments and Equipment High performance liquid chromatograph with differential refractive index detector. A.5.3 reference chromatographic conditions a) Column. sulfonated styrene - divinylbenzene copolymer resin column (styrene monomer, divinylbenzene as crosslinking agent for the feet Inch exclusion ion exchange; Separation mode. an exclusion limit of more than 1000, the number of theoretical plates n≥17 000), column length 300mm, Column diameter 8mm; or other equivalent column. b) Mobile phase. lessons 0.42mL sulfuric acid, diluted with water to 1000mL, with a 0.45μm membrane filter, degassed with ultrasound 15min. c) Column temperature. 60 ℃. d) flow rate. 0.5 mL/min. e) Injection volume. 20 μL. A.5.4 Analysis step A.5.4.1 Preparation of standard solutions Table A.1 method of preparation of standard solutions No. Sample mass (g) a liquid volume (mL) Sample concentration (g/L) 1 0.005 50 0.1 2 0.01 50 0.2 3 0.02 50 0.4 4 0.03 50 0.6 The 1,6-anhydro -D- glucose, glucose and sorbitol standards are formulated according to standard table that each standard were weighed 0.005g, 0.01g, 0.02g, 0.03g, dissolved in water and dilute to 50mL, three standard products are formulated into a series of concentration standards, It is filtered with 0.45μm membrane spare. A.5.4.2 Preparation of sample solution Weigh about 1g polydextrose sample (with accuracy to 0.000 1g), dissolved in water and dilute to 25mL, of the sample solution with 0.45μm Membrane filtration reserve. A.5.4.3 Determination In A.5.3 reference chromatographic conditions, respectively, 1,6-anhydro -D- glucose, glucose and sorbitol concentrations of standard samples into the series OK determination, the experiment was repeated twice, to obtain the average standard peak area. In standard average peak area value of the vertical coordinate, standard series of concentrations (g/L) Abscissa, respectively plotted 1,6-anhydro -D- glucose standard curve of glucose and sorbitol in. Under the above chromatographic conditions, the sample was measured according to the standard retention time qualitative. The experiment was repeated twice to give flat Average value of peak area. The linear relationship between the standard average peak area values and standards between the concentration, respectively, to obtain a sample solution of 1,6-anhydro -D- Portugal Glucose, glucose and sorbitol concentration of (g/L). If the concentration of the sample solution of 1,6-anhydro -D- glucose, glucose and sorbitol in (G/L) is not within the scope of the standard curve, the concentration of the sample solution should be adjusted. A.5.5 Calculation Results 1,6-anhydro -D- glucose content X2 according to formula (A.2) Calculated. 2 × = c cX% (A.2) Where. X2-- sample of 1,6-anhydro -D- glucose content (dry basis, without ash content),%; c1-- the calibration curve obtained 1,6-anhydro -D- glucose concentration in grams per liter (g/L); C2-- concentration of the sample solution (based on dry weight loss and ash content of the sample, in terms of dry basis, no concentration of ash content), In grams per liter (g/L). Glucose content in the sample calculation and sorbitol content in the sample is calculated with 1,6 dehydration -D- glucose levels. Specimen The content of glucose and sorbitol are both content and. The results parallel arithmetic mean of the measurement results shall prevail. Twice in the same condition absolutely independent determination results The difference is not more than 5% of the arithmetic mean. Determination A.6 5- HMF A.6.1 Instruments and Equipment Spectrophotometer. A.6.2 Analysis step A.6.2.1 Preparation of sample solution Weigh approximately 1 g polydextrose sample (with accuracy to 0.000 1g), dissolved in water and dilute to 100 mL, mix and set aside. A.6.2.2 Determination Choose a suitable spectrophotometer, using 1cm quartz cuvette with water blank and reference, the test sample solution at 283 nm wavelength Absorbance values. A.6.3 Calculation Results 5-HMF content X3 according to formula (A.3) Calculated. 749.0 AX × = (A.3) Where. X3-- sample of 5-HMF content (dry basis, without ash content),%; 0.749-- proportional constant composition, including extinction coefficient, molecular weight, and volume units conversion. A-- absorbance of the sample solution. C3-- concentration of the sample solution (based on dry weight loss and ash content of the sample, in terms of dry basis, no concentration of ash content), In milligrams per milliliter (mg/mL). ......

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