能量饮料中二氧化碳气容量及空气含量检测方案(饮用酒检测仪)

京都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD.APET-0259en APET-0259er6. Procedure Application Note Measurement of gas volume and air content in carbonatedenergy drink by Gas volume and air content analyzer IndustryFood & beverageInstrumentGas volume and air content analyzerMeasurement methodGas volume measurement methodStandardsGB/T 10792 1.Scope Caution This instrument needs a 6 mol/L sodium hydroxide aqueous solution which may causeblindness when it contacts human eyes. Be sure to wear protective goggles duringhandling it. The measurement of the gas volume， air content of carbonated beverages is an important factorin determining the mouthfeel， taste and flavor， and best-by date. This Application Note introducesan example of measuring commercially available carbonated energy drink of two differenproducts using a gas volume and air content analyzer. The gas volume is calculated bytcontinuously rotating the sample container and measuring the equilibrium pressure of the gas andthe sample temperature. Then， gas in the sample is transferred to the absorbent cylinder and thecarbon dioxide gas is absorbed by an absorbent solution (sodium hydroxide solution) filled in thecylinder to measure the air content. 2. Precautions Measurements should be conducted within a temperature-controlled laboratory room， and thetemperature of the instrument and samples must be equalized to that of the room. Either the instrument’s onboard air system， or an independent air compressor， (both of whichcan adjust to pressures between 0.5 and 0.7 MPaG)， is required for the piercing and rotation ofsample bottles and cans. 3. After measurement "Samples should be disposed of properly after the measurement is complete，as they may becontaminated with the absorbent solution. The measurement instrument should be rinsed properly at the end of the day. · When measuring samples containing solids such as pulp， clean the net filter of the instrumentafter measurement for the day is complete. 4. Apparatus Equipment Gas volume and air content analyzer 5. Reagents Absorbent solution 6 mol/L Sodium hydroxide solution Rinse solution Pure water 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室电话：021-54488867 电邮： kemu-kem@163.com 网址： http：//www.kem-china.com 1) Select gasvolume/gasspressuree+air content measurementt((GV/P+AIR)”onnthemeasurement mode， and enter the following parameters into the measurement conditions. GV/P+AIR GV/P Cal. SOFT DISSOLVE AUTO Start Time O sec RotO Time 0 sec Wait Time 0 sec Snift Press .005 MPa MAX Time 180 sec MIN Time 10 sec Error Press .015 MPa Rot1 Time 70 sec Trial Press .010 MPa max Time 180 sec Min Time 10 sec Trial Count 5 times Skip Press .015 MPa Rot2 Time 20 sec End Press .015 MPa Note that the above measurement parameters are an example and optimizing theseparameters might be necessary depending on the sample’s property. 2) Set the sample bottle/can on the sample stage and press the Start button. Table 1 shows the measurement results of carbonated energy drinks (160mL). Table 1. Measurement results list* Sample n AirVolume[mL] GasVolume [V/V] GasPress[MPal Press[MPal Temp. Carbonatedenergy drinkA can 1 0.83 2.91 0.295 0.329 22.0 2 0.80 2.97 0.301 0.328 21.9 3 0.71 2.93 0.297 0.317 22.0 4 0.63 2.95 0.299 0.321 22.0 5 0.77 2.98 0.302 0.324 21.9 Mean 0.75 2.95 0.299 0.324 22.0 SD 0.08 0.03 0.003 0.005 0.05 RSD(%) 10.6 1.0 1.0 1.5 0.2 Carbonatedenergy drinkBbottle 1 1.01 2.4 0.181 0.238 21.8 2 1.14 2.4 0.181 0.238 21.8 3 1.16 2.39 0.180 0.240 21.8 4 1.10 2.38 0.179 0.238 22.0 5 1.08 2.41 0.183 0.242 22.2 Mean 1.10 2.40 0.181 0.239 21.9 SD 0.06 0.01 0.001 0.002 0.2 RSD(%) 5.3 0.5 0.8 0.7 0.8 * Measurement items Air Volume The volume of gases other than carbon dioxide in the container (mL) Gas Volume Carbon dioxide volume (V/V) of 1mL sample volume Gas Press Converted pressure in sample bottle/can at 20℃ (MPa) Press Measured pressure (MPa) Temp. Measured sample temperature (C) 都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD. 二氧化碳气容量分析仪测定能量饮料的二氧化碳气容量和空气含量 应用资料(英文版)测量碳酸饮料的二氧化碳气容量和空气含量是决定口感、味道和风味以及最佳日期的重要因素。本应用使用全自动二氧化碳气容量分析仪测量两种不同产品的碳酸能量饮料的范例。通过连续旋转样品容器并测量气体平衡压力和样品温度来计算二氧化碳气容量。然后，将样品中的气体转移到吸收瓶中，二氧化碳气体被填充在吸收瓶中的吸收溶液(氢氧化钠溶液)吸收，以测量空气含量。