GB 5009.7-2016 Translated English of Chinese Standard. GB5009.7-2016: National Food Safety Standard - Determination of reducing sugar in foodshttps://www.chinesestandard.net, 4 nov 2017 - 30 pagine This Standard specifies the determination of reducing sugar content in foods. Method I and method II of this Standard apply to the determination of reducing sugar content in foods. Method III of this Standard applies to the determination of reducing sugar content in wheat flour. Method IV of this Standard applies to the determination of reducing sugar content in sugar beet root. |
Sommario
| 4 | |
Scope | 5 |
Instruments and equipment | 7 |
Expression of analysis results | 9 |
Precision | 10 |
Principle | 11 |
Instruments and equipment | 12 |
Expression of analysis results | 13 |
Others | 15 |
Instruments and equipment | 16 |
Expression of analysis results | 17 |
Precision | 18 |
Instruments and equipment | 20 |
Analysis procedure | 21 |
Expression of analysis results | 22 |
Annex A | 23 |
Precision | 14 |
Parole e frasi comuni
250-mL volumetric flask A B Cuprousoxide Glucose accurate to 0.001 ADD 10 mL ADD 5 mL ADD water alkaline copper tartrate arithmetic mean blank test calculated as equation content of reducing Copper sulfate copper tartrate solution Cuprousoxide Glucose Fructose Determination of reducing dilute to 100 DILUTE with water dissolve and dilute Erlenmeyer flask evaporative dish FILTER with dry filtrate for further Fructose A B Cuprousoxide g of potassium g of sodium glacial acetic acid Glucose Fructose A B Gooch crucible hydrochloric acid solution iodine Lactose containing water mass of cuprous milligrams Key milliliters mL mL of alkaline mL of hydrochloric mL of water PIPETTE potassium ferricyanide solution Potassium iodide potassium permanganate standard Potassium tartrate reagents reducing sugar standard slowly ADD sodium carbonate sodium hydroxide solution sodium thiosulfate standard Sodium tungstate standard titration solution sugar standard solution sulfuric acid Table A.1 continued thiosulfate standard titration water to dissolve zinc acetate solution