GB 25550-2010 English PDF

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GB 25550-2010: L-carnitine tartrate national food safety standards of food additives
Status: Obsolete

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Basic data

Standard ID: GB 25550-2010 (GB25550-2010)
Description (Translated English): L-carnitine tartrate national food safety standards of food additives
Sector / Industry: National Standard
Classification of Chinese Standard: C54;X40
Classification of International Standard: 67.220.20
Word Count Estimation: 9,988
Date of Issue: 2010-12-21
Date of Implementation: 2011-02-21
Quoted Standard: GB/T 601; GB/T 602; GB/T 603; GB/T 9724; GB/T 613; GB/T 5009.76; GB/T 5009.74; GB/T 9741; GB/T 6284
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 food additives L- carnitine tartrate for the synthesis of food additives L- carnitine tartrate.

GB 25550-2010: L-carnitine tartrate 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.
L-carnitine tartrate national food safety standards of food additives National Standards of People's Republic of China National Food Safety Standard Food additives L- carnitine tartrate Issued on. 2010-12-21 2011-02-21 implementation People's Republic of China Ministry of Health issued

Foreword

This standard Appendix A and B are normative. National Food Safety Standard Food additives L- carnitine tartrate

1 Scope

This standard applies to L- carnitine tartrate food additives and food additives L- carnitine tartrate is synthesized.

2 Normative references

This standard referenced in the file for the application of this standard is essential. For dated references, only the edition date of the note This applies to this standard. For undated references, the latest edition (including all amendments) apply to this standard. 3 Chemical name, molecular formula, structural formula and relative molecular mass 3.1 Chemical Name (R) - bis [(3-carboxy-2-hydroxypropyl) trimethyl amino] -L- tartrate Formula 3.2 C18H36N2O12 3.3 formula 3.4 relative molecular mass 472.49 (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 Tissue state crystalline powder Take appropriate laboratory sample, placed in a clean, dry white porcelain dish, in natural light The line visually observed 4.2 Physical indicators. to comply with Table 2. Table 2. Physical and chemical indicators Item Index Test Method L- carnitine (dry basis), w /% 68.2 ± 1.0 Appendix A A.4 Tartaric acid (dry basis), w /% 31.8 ± 1.0 A.5 Appendix A Drying loss, w /% ≤ 0.5 A.6 Appendix A Residue on ignition, w /% ≤ 0.5 Appendix A A.7 3.0-4.5 Appendix A pH (100g/L aqueous solution) A.8 Specific rotation αm (20 ℃, D)/[(°) · dm2 · kg-1] -11.0 ~ -9.5 A.9 Appendix A Arsenic (As)/(mg/kg) ≤ 1 in Appendix A A.10 Heavy Metals (as Pb)/(mg/kg) ≤ 10 Appendix A A.11

Appendix A

(Normative) Testing method A.1 Warning Some test procedure specified test methods 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. The test method used in the standard titration solution, impurities measured by standard solution, preparations and products, not specified in other requirements, according GB/T 601, GB/T 602 and GB /603 Preparation of predetermined T. A.3 Identification Test A.3.1 chemistry A.3.1.1 Reagents and materials A.3.1.1.1 glycerol. Carbon disulfide solution A.3.1.1.2 Sulfur. 20g/L. Take sulfur 2g, add carbon disulfide dissolved into 100mL. A.3.1.1.3 lead acetate paper. Take lead acetate 10g, add freshly boiled over cold water dissolved, dropwise addition of glacial acetic acid and the solution clarified, and then freshly boiled Over cold water to dilute to 100mL, taking lead acetate filter paper was immersed in the test solution, the wet removed, dried at 100 ℃. A.3.1.2 analysis step Weigh about 50mg laboratory samples, placed in a test tube, adding a drop of a solution of carbon disulfide sulfur, mixed, heated for a moment, in a dry tube opening Lead acetate paper cover, the tubes were suspended in a preheated to about 170 ℃ glycerin bath, i.e. black spots on paper after 3min ~ 4min. A.3.2 infrared spectroscopy FT-IR KBr tablet method, samples and controls were taken 1mg ~ 2mg and potassium bromide, KBr. Sample = 100.1 were mixed homogeneously ground, placed in a tablet press tabletting, film into the infrared spectroscopy IR spectra obtained. Its spectrum should be Appendix B of FIG B.1L- carnitine tartrate IR spectra consistent standards. Determination A.4 L- carnitine A.4.1 Method summary Glacial acetic acid as solvent in the sample, crystal violet as an indicator, titration was titrated with standard perchloric acid, perchloric acid consumption according to standard titration Volume of the solution, the content of L- carnitine is calculated. A.4.2 Reagents and materials A.4.2.1 glacial acetic acid. A.4.2.2 perchloric acid standard titration solution. c (HClO4) = 0.1mol/L. A.4.2.3 crystal violet indicator solution. 5g/L. A.4.3 Analysis step A.4.3.1 sample weighed 0.1g, accurate to 0.0001g, dissolved in 20mL of acetic acid ice, add one drop of crystal violet indicator solution with perchloric standard Quasi solution was titrated solution was titrated to pure blue. A.4.3.2 measured at the same time, by the same procedure as the measurement of the sample without using the same amount of reagent blank test solution. A.4.4 calculation results L- carnitine (C7H15NO3, dry basis) the mass fraction w1, values are expressed in% calculated according to formula (A.1). w1 = (V1-V2) c1M m (1-w3) 1000 × 100% (A.1) Where. Vl --- sample consumption perchloric acid standard titration solution (A.4.2.2) value of the volume in milliliters (mL); Blank --- consumption value V2 standard titration solution volume of perchloric acid, in milliliters (mL); Accurate value of the solution concentration C1 --- perchloric acid titration standard, in units of moles per liter (mol/L); Numerical m --- sample mass, in grams (g); w3 --- A.6 measured by loss on drying,%; Numerical molar mass M --- L- carnitine, in units of grams per mole (g/mol) (M = 161.2). 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 tartaric acid A.5.1 Reagents and materials A.5.1.1 sodium hydroxide standard titration solution. c (NaOH) = 0.1mol/L. A.5.1.2 phenolphthalein indicator solution. 10g/L. A.5.2 Analysis step A sample was weighed 0.3g, accurate to 0.0001g, placed in 250mL conical flask, freshly boiled and cooled water to dissolve 50mL, Add 2 drops of phenolphthalein indicator solution, the standard solution was titrated with sodium hydroxide titration solution from colorless to pink. A.5.3 calculation results Tartaric acid (C4H6O6, dry basis) the mass fraction w2, expressed in%, is calculated according to equation (A.2). w2 = V1c2Mm (1-w3) 1000 × 100% (A.2) Where. Vl --- volume of sample values the consumption of sodium hydroxide standard titration solution (A.5.1.1), milliliters (mL); The exact value of C2 --- sodium hydroxide concentration titration, expressed in moles per liter (mol/L); Numerical m --- sample mass, in grams (g); w3 --- A.6 measured by loss on drying,%; --- numerical molar mass M tartaric acid units of grams per mole (g/mol) (M = 75.04). 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. Determination of loss on drying A.6 Carried out in GB/T 6284. When measured, weighed 1g ~ 2g laboratory samples, accurate to 0.0001g. The arithmetic average of the results of two parallel determination for reporting results. Two parallel determination results is not more than the absolute difference between the two measured 20% of the arithmetic mean value. A.7 Determination of residue on ignition Carried out in GB/T 9741. Ignition temperature of (750 ± 50) ℃. The arithmetic average of the results of two parallel determination for reporting results. Two parallel determination results is not more than the absolute difference between the two measured 20% of the arithmetic mean value. A.8 pH is measured Carried out in GB/T 9724. Measurement, weigh about 5g laboratory samples, accurate to 0.0001g, add about 20mL carbon dioxide-free After measuring the water dissolved and diluted to 100mL. The arithmetic average of the results of two parallel determination for reporting results. The absolute difference determination results in parallel is no greater than 0.1. A.9 ratio measured optical rotation A.9.1 laboratory samples weighed amount, accurate to 0.0001g, dissolved in water and diluted quantitatively made containing about 100mg per ml of Solution. Specific rotation αm (20 ℃, D) to the value "(°) · dm2 · kg-1", calculated according to formula (A.3). αm (20 ℃, D) = αlρα (A.3) Where. --- [alpha] measured angle of rotation in degrees ([deg.]); L --- optical tube length, measured in decimeters (dm); Ρα --- concentration of the effective component in the solution in grams per milliliter (g/mL). A.9.2 Other proceed as GB/T 613. Determination of arsenic A.10 Carried out in GB/T 5009.76 arsenic plaque assay. Weigh about 1g laboratory samples, measured to the nearest 0.01g. Preparation limits solution. pipette pipette 1.00mL limited arsenic standard solution (arsenic 0.001mg), while the same sample deal with. A.11 Determination of Heavy Metals Conducted in accordance with GB/T 5009.74 of. Digestion treatment of the sample by a dry, weighed sample 10.0mL measurement digestion solution (corresponding to 1.0g laboratory sample), taking the amount of 1.0mL of lead standard solution (corresponding to 10.0μg lead) lead limits prepared solution.

Appendix B

(Normative) L- carnitine tartrate infrared spectrum of the standard FIG B.1 L- carnitine tartrate infrared spectrum of the standard ......

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