GB/T 5009.7-2008 Translated English of Chinese Standard. (GBT 5009.7-2008, GB/T5009.7-2008, GBT5009.7-2008): Determination of reducing sugar in foodsThis Standard specifies the determination method of reducing sugar content in food. This standard applies to the determination of reducing sugar content in food. When 5.0g of sample is taken, the detection limit of direct titration is 0.25g/100g, and the detection limit of permanganate titration is 0.5g/100g. |
Common terms and phrases
10mL of water 150mL conical flask 250mL volumetric flask 5.0mL of alkaline 50g of sodium 5mL of zinc according to formula accurate to 0.001g add 10mL Add water alkaline copper tartrate blended sample boiling within 2min burette to drop copper tartrate solution cuprous oxide Dextrose dilute to 100mL dried for 2h drop/2s equal to 1.0mg evaporating dish ferric sulfate solution following procedure according Fructose GB/T glucose Gooch crucible hydrochloric acid 3mol/L hydroxide solution 40g/L kind of reducing Lactose Manipulate the following measurement accurate methylene blue milliliter permanganate standard solution Potassium ferrocyanide reducing sugar content reducing sugar standard refined asbestos result calculated sample calculating slowly inject 5mL sodium hydroxide solution Sodium potassium tartrate solution Absorb 5.0mL solution and 5.0mL sugar standard solution sulfuric acid Take 1g accurate Take about 100g tartrate A solution test sample titration total consumed volume vertical melting crucible water to 1000mL water to dissolve zinc acetate solution