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GB 1886.65-2015 English PDF

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GB 1886.65-2015: National Food Safety Standard -- Food Additives -- Single, double glycerol fatty acid ester
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GB 1886.65-2015English169 Add to Cart 3 days [Need to translate] National Food Safety Standard -- Food Additives -- Single, double glycerol fatty acid ester Valid GB 1886.65-2015

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Basic data

Standard ID GB 1886.65-2015 (GB1886.65-2015)
Description (Translated English) National Food Safety Standard -- Food Additives -- Single, double glycerol fatty acid ester
Sector / Industry National Standard
Classification of Chinese Standard X40
Word Count Estimation 8,854
Date of Issue 2015-09-22
Date of Implementation 2016-03-22
Regulation (derived from) PRC National Health and Family Planning Commission 2015 No.8
Issuing agency(ies) National Health and Family Planning Commission of the People's Republic of China

GB 1886.65-2015: National Food Safety Standard -- Food Additives -- Single, double glycerol fatty acid ester


---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 standards for food additives single, double glycerol fatty acid ester) National Standards of People's Republic of China National Food Safety Standard Single food additives, diglycerol fatty acid ester Issued on. 2015-09-22 2016-03-22 implementation People's Republic of China National Health and Family Planning Commission released National Food Safety Standard Single food additives, diglycerol fatty acid ester

1 Scope

This standard applies to a saturated or unsaturated fatty acid or oil and the reaction of glycerol, with or without separation and purification, such as processing too To food additives single, double glycerol fatty acid ester (oleic acid, linoleic acid, linolenic acid, palmitic acid, behenic acid, stearic acid, lauric acid).

2 formula

α- single - CH2OOCR CHOH CH2OH β- single - CH2OH CHOOCR CH2OH α, β- bis - CH2OOCR CHOOCR CH2OH α, α- bis - CH2OOCR CHOH CH2OOCR Wherein. -OCR represents a fatty acid group.

3 Technical requirements

3.1 Sensory requirements Sensory requirements shall comply with the requirements of Table 1. Table 1 Sensory requirements Project requires test methods Color white, yellow or yellow to light brown State viscous liquid, paste, solid or powdery solid Take appropriate sample is placed in a clean, dry white porcelain dish, in natural light Under observe its color and status 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 Total single glycerol fatty acid esters conform claimed in Appendix A A.3 Water, w /% ≤ 2.0 GB 5009.3 in the Karl Fischer method Free glycerol, w /% ≤ 7.0 Appendix A A.3 Acid value (in dollars KOH)/(mg/g) ≤ 6.0 Appendix A A.4 TABLE 2 (cont.) Item Index Test Method Soap (oil, sodium meter), w /% ≤ 6.0 A.5 in Appendix A Lead (Pb)/(mg/kg) ≤ 2.0 GB 5009.75

Appendix A

Testing method A.1 General Provisions Unless otherwise specified in this standard, the purity of the reagents used should be analytical grade or higher than AR, the standard titration solution, and the determination of impurities Standard solution, preparations and products, should be GB/T 601, the provisions of the preparation of GB/T 602 and GB/T 603, the test water should be consistent with GB/T 6682 The three water requirements. Solution was used in the tests did not indicate what is formulated with solvent, it refers to an aqueous solution. A.2 Identification Test The sample does not dissolve in water, soluble in ethanol, chloroform or benzene. A.3 Determination of the total fatty acid esters of monoglycerides and free glycerol A.3.1 Method summary Because a single, high boiling fatty acid esters of diglycerol, not directly into the column, otherwise it will clog the column. In this method, the Single, double glycerol fatty acid ester and a silane reagent (BSTFA, TMCS) chemical derivatization reaction to form a volatile silane derivative, Reducing the boiling point, it can be analyzed by gas chromatography. A.3.2 Reagents and materials A.3.2.1 pyridine. A.3.2.2 tetradecane. A.3.2.3 N, O- bis trimethylsilyl trifluoroacetamide (BSTFA). A.3.2.4 trimethylchlorosilane (TMCS). A.3.2.5 glycerin standard. A.3.2.6 glyceryl monooleate, glyceryl linoleate, glyceryl linolenate, monoglyceride palmitate, monoglyceride behenate, monoglyceride Stearate, monoglyceride monolaurate standards. purity of not less than 99%. Note. Different products should be used in single-glycerol fatty acid esters corresponding to the standard test. A.3.3 Instruments and Equipment A.3.3.1 gas chromatograph. A.3.3.2 Column. 5% phenyl filler, 1% vinyl - methyl polysiloxane column length 30m, internal diameter 0.25mm, film thickness 0.25μm. Or an equivalent column. A.3.3.3 flame ionization detector (FID). A.3.4 reference chromatographic conditions A.3.4.1 Column temperature. initial temperature of 120 ℃, at a rate of 15 ℃/min heating to 340 ℃, and maintain 30min. A.3.4.2 inlet temperature. 320 ℃. A.3.4.3 detector temperature. 350 ℃. A.3.4.4 carrier gas. nitrogen. A.3.4.5 carrier gas flow rate. 1mL/min. A.3.4.6 Hydrogen. 60mL/min. A.3.4.7 Air. 500mL/min. A.3.4.8 Split ratio. 1.10 to 1.50. A.3.4.9 injection volume. 1μL ~ 5μL. A.3.5 Analysis step A.3.5.1 Sample Preparation Accurately weigh tetradecane (internal standard) and the corresponding standards for each 100mg, placed in 10mL volumetric flask, after pyridine to volume as a standard Solution. Standard analyte containing glycerol and fatty acid esters of glycerol corresponding single. The exact amount taken 0.10mL standard solution to 2.5mL screw Cap vials, after adding 0.1mLTMCS and 0.2mLBSTFA violently shaken, placed in 70 ℃ oven reaction 20min, to give the sample. A.3.5.2 Preparation of sample solution Accurately weighed 100mg tetradecane (internal standard) and 600mg sample was placed in 10mL volumetric flask, pyridine volume. The exact amount taken 0.10mL solution to 2.5mL screw-capped vials, after adding 0.1mLTMCS violent shake and 0.2mLBSTFA, placed in 70 ℃ The reaction oven 20min, to obtain the sample solution to be tested. A.3.5.3 Determination In A.3.4 conditions, and standards into the sample to be tested was measured. A.3.6 Calculation Results A.3.6.1 Calculation of response factor R Response factor R, according to equation (A.1) Calculated. R = As × md Ad × ms (A.1) Where. As --- standard peak area; Md --- the quality of the internal standard in grams (g); Ad --- internal standard peak area; ms --- standard mass in grams (g). A.3.6.2 Calculation of the mass fraction of component to be measured Mass fraction of component to be tested wi, according to equation (A.2) Calculated. wi = md × Ai m × Ad × R × 100% (A.2) Where. Md --- the quality of the internal standard in grams (g); Ai --- peak area of component to be measured; M --- the quality of the sample, in grams (g); Ad --- internal standard peak area; R --- response factor. By formula (A.1) and formula (A.2) can calculate the total fatty acid esters of monoglycerides and free glycerol content. The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference Not more than 5% of the arithmetic mean. A.4 acid value (in dollars KOH) Determination A.4.1 Reagents and materials A.4.1.1 95% ethanol. A.4.1.2 Potassium hydroxide - ethanol standard titration solution. c (KOH) = 0.1mol/L. A.4.1.3 phenolphthalein indicator solution. 10g/L. A.4.2 Analysis step Weigh the sample 5g, accurate to 0.001g, placed in a 500mL conical flask, 75mL ~ 100mL neutral hot ethanol (in Canada 95% ethanol was added 2mL heat after phenolphthalein indicator solution, potassium hydroxide - ethanol standard titration solution and to a reddish color, and maintain 30s Not fade), the sample is completely dissolved. For some of the less soluble samples, use a neutral ether - ethanol mixture (11) or oil Fine - ethanol (11) mixed solution dissolved. Added 0.5mL phenolphthalein indicator solution immediately with potassium hydroxide - ethanol standard solution titration titration, Titration until the solution was slightly red and not fade is maintained 30s titration end. A.4.3 Calculation Results Acid value (KOH in dollars) mass fraction w2, in milligrams per gram (mg/g) count, according to equation (A.3) Calculated. w2 = V × c × M (A.3) Where. V --- sample consumed potassium hydroxide - Standard volumetric titration ethanol solution in milliliters (mL); c --- Potassium hydroxide - ethanol concentration standard titration solution, expressed in moles per liter (mol/L); M --- molar mass of potassium hydroxide in milligrams per mmol (mg/mmol), [M (KOH) = 56.1]; M --- the quality of the sample, in grams (g). The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference Not more than 10% of the arithmetic mean. A.5 soap (oil, sodium meter) measurement A.5.1 Reagents and materials A.5.1.1 acetone. A.5.1.2 sodium hydroxide standard titration solution. c (NaOH) = 0.1mol/L. A.5.1.3 hydrochloric acid standard titration solution. c (HCl) = 0.1mol/L. A.5.1.4 bromophenol blue indicator solution. 0.4g/L. A.5.2 Analysis step Weigh the sample 10g, accurate to 0.001g, previously added with hydrochloric acid or sodium hydroxide standard titration solution is adjusted to the standard titration solution A mixed solution of (60mL acetone and 0.15mL by the bromophenol blue indicator liquid mixed phase), the sample was warmed in a water bath until completely dissolved. use Hydrochloric acid standard titration solution is titrated, titrated to a solution blue faded, standing 20min, if the solution has a solid sample during precipitation, it would take longer Ci water bath warmed to completely dissolve the sample. If the solution is blue again, we need to continue to use the standard volumetric hydrochloric acid solution was titrated to neutral. A.5.3 Calculation Results Soap (oil, sodium meter) mass fraction w3, according to equation (A.4) Calculated. w3 = V × c × M m × 1000 × 100% (A.4) Where. Volume V --- sample titration consumption hydrochloric acid standard titration solution, in milliliters (mL); c --- hydrochloric acid standard titration solution concentration, in units of moles per liter (mol/L); Oil molar mass M --- sodium in grams per mole (g/mol), [M (C18H33O2Na) = 304]; M --- the quality of the sample, in grams (g); 1000 --- volume conversion factor. The results parallel arithmetic mean of the measurement results shall prevail. Twice under the same condition of independent determination results obtained absolute difference Value must not exceed 0.1%. 5102- 56􀏕 6881

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