GB 5413.11-2010 English PDF

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GB 5413.11-2010: National food safety standard Determination of vitamin B1 in foods for infants and young children, milk and milk products
Status: Obsolete

GB 5413.11: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 5413.11-2010	239	Add to Cart	3 days	National food safety standard Determination of vitamin B1 in foods for infants and young children, milk and milk products	Obsolete
GB/T 5413.11-1997	199	Add to Cart	2 days	Milk powder and formula foods for infant and young children--Determination of vitamin B1 content	Obsolete

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Basic data

Standard ID: GB 5413.11-2010 (GB5413.11-2010)
Description (Translated English): National food safety standard Determination of vitamin B1 in foods for infants and young children, milk and milk products
Sector / Industry: National Standard
Classification of Chinese Standard: C53;X82
Classification of International Standard: 67.100.10
Word Count Estimation: 6,654
Date of Issue: 2010-03-26
Date of Implementation: 2010-06-01
Older Standard (superseded by this standard): GB/T 5413.11-1997
Regulation (derived from): Circular of the Ministry of Health (2010)7
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This Chinese standard specifies the infant foods and milk products Determination of vitamin B1. This standard applies to infant foods and milk products Determination of vitamin B1.

GB 5413.11-2010: National food safety standard Determination of vitamin B1 in foods for infants and young children, milk and milk products

---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.
National food safety standard Determination of vitamin B1 in foods for infants and young children, milk and milk products National Standards of People's Republic of China GB 25542-2010 People's Republic of China Ministry of Health issued Issued on. 2010-12-21 2011-02-21 implementation National Food Safety Standard Food additives glycine (an amino acid) GB 25542-2010

Foreword

Appendix A of this standard is a normative appendix. GB 25542-2010 National Food Safety Standard Food additives glycine (an amino acid)

1 Scope

This standard applies to dissolved by an acid amide obtained in the process of industrial amino acid purified water, active carbon and other processes recrystallization Crystal prepared food additive glycine (an amino acid).

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 formula, relative molecular mass and structural formula Formula 3.1 C2H5NO2 3.2 formula NH2-CH2-C-OH 3.3 relative molecular mass 75.07 (according to 2007 international relative atomic mass) 4. Technical Requirements 4.1 Sensory requirements. comply with Table 1. Table 1 Sensory requirements Project requires test methods Color White take appropriate laboratory sample, placed in a clean, dry white porcelain dish, In natural light, visually observed. Organizational status crystalline granule or crystalline powder 4.2 Physical indicators. to comply with Table 2. GB 25542-2010 Table 2. Physical and chemical indicators Item Index Test Method Amino acid (dry basis), w /% 98.5 ~ 101.5 Appendix A A.4 Chloride (Cl dollars), w /% ≤ 0.010 A.5 in Appendix A Arsenic (As)/(mg/kg) ≤ 1 Appendix A A.6 Heavy metals (Pb)/(mg/kg) ≤ 10 Appendix A A.7 Loss on drying, w /% ≤ 0.20 Appendix A A.8 Residue on ignition, w /% ≤ 0.10 A.9 in Appendix A Clarity test by test A.10 in Appendix A pH (50g/L solution) 5.5 to 7.0 Appendix A A.11 GB 25542-2010

Appendix A

(Normative) Testing method A.1 Warning Some test procedures prescribed test method can lead to dangerous situations. The operator shall take appropriate safety and health practices. A.2 General Provisions Unless otherwise indicated in the analysis using only confirm three analytical grade reagents and water GB/T 6682-2008 stipulated. Test Methods standard titration solution, when measured impurity standard solution, preparations and products, with no other requirements noted, According to GB/T 601, the provisions of GB/T 602 and GB/T 603 of the preparation. A.3 Identification Test A.3.1 Reagents and materials A.3.1.1 indane trione solution. 1g/L. A.3.1.2 hydrochloric acid solution. 13. A.3.1.3 sodium nitrite solution. 100g/L. A.3.1.4 chromotropic acid solution. Weigh 0.5g chromotropic acid, add 50mL sulfuric acid solution (21) Shake mixed, centrifuged, the supernatant using. this Solution preparation required before use. A.3.2 Analysis step A.3.2.1 indane trione test Weigh about 0.1g laboratory samples, accurate to 0.01g, was dissolved in 100mL of water of this solution 5mL, adding 1mL indane trione solution, add Heat to boiling after about 3min was purple. A.3.2.2 nitroso test Weigh about 1g laboratory samples, accurate to 0.01 g, was dissolved in 10mL of water of this solution 5mL, add 5 drops of hydrochloric acid solution and 1mL Freshly prepared solution of sodium nitrite, a colorless gas. The solution 5 drops into the test tube, after boiling on a water bath evaporated, cooling, Add 5 drops to 6 drops of chromotropic acid solution to the residue heated in a water bath after 10min ~ 30min was dark purple. A.4 Determination of amino acid A.4.1 Method summary Sample formic acid as a co-solvent, glacial acetic acid as solvent, crystal violet as indicator, titration with perchloric acid standard solution titration, according to Consumption volume perchloric acid standard titration solution content is calculated amino acid. A.4.2 Reagents and materials A.4.2.1 glacial acetic acid. A.4.2.2 anhydrous formic acid. A.4.2.3 perchloric acid standard titration solution. c (HClO4) = 0.1 mol/L. A.4.2.4 crystal violet indicator solution. 2g/L. A.4.3 Analysis step A.4.3.1 Weigh about 0.15g A.8.1 dried substance A, accurate to 0.0001g, placed in 250mL dry conical flask, add about 1mL GB 25542-2010 Anhydrous formic acid dissolved, add 30mL glacial acetic acid, add 2 drops of crystal violet indicator solution, titration with perchloric acid standard solution titration until the solution changed from purple Bright blue-green endpoint. A.4.3.2 measured at the same time, according to the same procedure and the determination of the sample without using the same amount of reagent blank test solution. A.4.4 Calculation Results Amino acid (dry basis) of the mass fraction w1, expressed in%, according to formula (A.1) Calculated. )( twenty one 1 ×× - = cMVVw% (A.1) Where. V1-- sample consumption of perchloric acid standard titration solution (A.4.2.3) the value of the volume, in milliliters (mL); V2-- blank consumption value perchloric acid standard titration solution volume in milliliters (mL); Accurate c-- perchloric acid standard titration solution concentration value in units of moles per liter (mol/L); m-- sample mass value in grams (g); Numerical M-- amino acid molar mass in grams per mole (g/mol) (M = 75.07). The arithmetic average of the results of two parallel determination for reporting results. Two parallel determination results is not more than 0.3% absolute difference. A.5 Determination of chloride A.5.1 Reagents and materials A.5.1.1 nitric acid solution. 19. A.5.1.2 silver nitrate solution. 17g/L. A.5.1.3 chloride (Cl) standard solution. 0.1mg/mL. A.5.2 Analysis step Weigh about 1.0g laboratory samples, accurate to 0.01g, placed in 50mL colorimetric tube, add water to dissolve 30mL, add 6mL nitric acid solution, add 50mL of water to the sample solution. Another one colorimetric tube, add 1mL ± 0.02mL chloride (Cl) standard solution, add 30mL water, add 6mL Nitric acid solution, add water to 50mL with standard turbidity solution. The sample solution and standard turbidity solution 1mL each added silver nitrate solution, fully Mixing, avoid direct sunlight, place 5min, on a black background side or axial observation, turbidity of the sample solution is not greater than standard Nephelometric turbidity quasi-liquid. A.6 Determination of Arsenic According to GB/T 5009.76 Gutzeit method. When said determination to take about 1.0g laboratory samples, accurate to 0.01g. Limited feature standard solution System. pipette Pipette 1mL ± 0.02mL arsenic standard solution (arsenic 1.0μg), and treated in the same sample at the same time. A.7 Determination of Heavy Metals A.7.1 Reagents and materials A.7.1.1 sodium hydroxide solution. 43g/L. A.7.1.2 sodium sulfide solution. 100g/L, before the need to use this solution formulation. A.7.1.3 Lead (Pb) standard solution. 0.01mg/mL. A.7.2 Analysis step GB 25542-2010 Weigh about 1.0g laboratory samples, accurate to 0.01g, placed in 25mL colorimetric tube, add 5mL sodium hydroxide solution, dissolved in water and dilute Diluted to 25mL, add 5 drops of sodium sulfide solution, shake 2min, was the color can not be deeper than the standard. Standard draw 1mL ± 0.02mL Lead (Pb) limit standard solution (lead 0.01mg), and treated in the same sample at the same time. A.8 Determination of loss on drying A.8.1 Analysis step Weigh about 1.0g laboratory samples, accurate to 0.0001g, placed in advance (105 ± 2) ℃ dried to constant mass weighing bottle shop Into the layer below 5mm. At 105 ℃ ± 2 ℃ constant temperature drying oven 3h, placed in a desiccator to cool 30min weighing. Reserved section Dry Dry matter (this is dried A) used for the determination of amino acid content. A.8.2 Calculation Results Loss on drying mass fraction w2, expressed in%, according to equation (A.2) Calculated. 10012 × - = m mmw% (A.2) Where. Numerical ago m-- dried sample mass, expressed in grams (g); Value after m1-- dried sample mass, expressed in grams (g). The arithmetic average of the results of two parallel determination for reporting results. Two parallel determination results of absolute difference is not more than 0.05%. A.9 Determination of residue on ignition A.9.1 Reagents and materials A.9.1.1 sulfuric acid. A.9.1.2 sulfuric acid solution. 18. A.9.2 Analysis step Weigh 2g ~ 3g laboratory samples, accurate to 0.0001g, placed by firing at 800 ℃ ± 25 ℃ to constant mass in a porcelain crucible, was added An appropriate amount of sulfuric acid solution samples were completely wetted. Heated slowly over low heat until the sample is completely carbonized, cooled. Plus about 0.5mL of sulfuric acid residues soaked Slag, low-temperature heating to sulfuric acid vapor Yat do. Burning at 800 ℃ ± 25 ℃ 45min. Cool to room temperature in a desiccator, and weigh. A.9.3 Calculation Results Burning residue mass fraction w3, expressed in%, according to the formula A.3) Calculated. 1001 × = mw% (A.3) Where. m-- sample mass value in grams (g); m1-- residue mass value in grams (g). The arithmetic average of the results of two parallel determination for reporting results. Two parallel determination results of absolute difference is not more than 0.02%. A.10 Clarity test A.10.1 reagents and materials GB 25542-2010 A.10.1.1 nitric acid solution. 12. A.10.1.2 dextrin solution. 20g/L. A.10.1.3 silver nitrate solution. 20g/L. A.10.1.4 turbidity standard solution. chlorine (Cl) 0.01mg/mL. Amount of c (HCl) = 0.1mol/L hydrochloric acid standard titration solution of 14.1 mL ± 0.02mL, a 50mL volumetric flask, dilute to the mark. Amount of the solution to 10 mL ± 0.02mL 1000mL volumetric flask, add water Dilute to the mark. A.10.2 Analysis steps Weigh about 1.0g laboratory samples, accurate to 0.01g, placed colorimetric tube, dissolved in water and diluted to 25mL, as the test solution; take Another colorimetric tube, was added 0.20mL accurate turbidity standard solution, add water to 20mL, add 1mL nitric acid solution, and 0.2mL dextrin solution 1mL silver nitrate solution, add water to 25mL, shake, dark place 15min, as a standard turbidity solution. In the absence of direct sunlight, axial and lateral observation, turbidity test solution is not greater than the standard nephelometric turbidity of the solution. A.11 pH measurement of According to GB/T 9724 carried out. After Weigh about 1.0g laboratory samples, accurate to 0.01g, add water to dissolve 20mL carbon dioxide-free mix Measured. ......

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