GB 5009.227-2016 Translated English of Chinese Standard. GB5009.227-2016: National food safety standard - Determination of Peroxide Value in Foodshttps://www.chinesestandard.net, 21. jul. 2018 - 13 strani This Standard specifies two methods of determining peroxide value in foods: titration and potentiometric titration. In this Standard, Method I is applicable to edible animal and vegetable fats and oils, and edible oil products, as well as food processed through deep-frying, puffing, baking, modulating and frying from plant-based food as the raw material, such as wheat flour, cereal and nut, etc.; food processed through quick freezing, dry-cure and pickling from animal-based food as the raw material. Method II is applicable to animal and vegetable fats, and margarine, and the range of measurement is 0 g/100 g ~ 0.38 g/100 g. This Standard is not applicable to the determination of embedded oil and fat products, for example, non-dairy creamer. |
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Scope | 4 |
Instruments and Equipment | 6 |
Expression of Analysis Results | 8 |
Precision | 9 |
Instruments and Equipment | 10 |
Expression of Analysis Results | 11 |
Precision | 13 |
Pogosti izrazi in povedi
0.01 mol/L sodium acetic acid mixed acid mixed solution adopted to signify arithmetic mean value blank test boiled and cooled Burette concentration of sodium constant-temperature drying oven Determination of Peroxide equivalent mass fraction expressed in mL expressed in mol/L fraction of iodine glacial acetic acid independent determinations obtained iodide saturated solution iodine in peroxide isooctane kg of sample Magnetic stirrer mL of water mmol number mol/L sodium thiosulfate newly boiled number of reactive obtained under repeatability oil and fat petroleum ether Place it evenly Potassium dichromate Potassium iodide saturated potassium iodide solution potentiometric titration Reagents repeatability conditions result shall retain retain two significant right before usage rotary evaporator saturated potassium iodide signify peroxide value slightly shake sodium carbonate sodium sulfate Sodium thiosulfate Na2S2O3.5H2O sodium thiosulfate standard standard solution consumed starch indicator take the sample thiosulfate standard solution titration cup trichloroethane-glacial acetic acid Vegetable Fats volume of sodium weigh-take 26 g