调味料中流动曲线检测方案(粘度计)

市售调味料的流动曲线测定 应用资料黄原胶通常作为分散剂和增稠剂添加到大多数商业敷料中。由于黄原胶与水混合时呈粘稠状，因此在食品中用作调味料、各种酱汁、蒸煮袋食品和冷冻食品等的增稠剂和增稠稳定剂，用途广泛。应用资料使用EMS粘度计，通过密封、灭菌和非接触方式测量含有黄原胶溶液粘度变化的示例。京都電子工業株式会社KYOTO ELECTRONICSAPVS-0114enMANUFACTURING CO.，LTD. APVS-0114en6. Procedure Application Note Flow curve of commercial dressing IndustryFood & beverageInstrumentViscometerMeasurement method：Electro Magnetically Spinning MethodStandards 1. Scope Xanthan gum is generally added as a dispersant and a thickener to most of commercialdressings. Since xanthan gum is viscous when mixed with water， it is used in foods as a thickener andthickening stabilizer for dressing， various sauces， retort pouch foods and frozen foods etc. for awide range of applications. An example of measuring Change in viscosity of the solution， containing xanthan gum， using anEMS viscometer that can be measured by sealing， sterilization and non-contact will be shownbelow. 2. Precautions None. 3. Post-measurement procedure The sample container and the sample are discarded appropriately. 4. Apparatus EMS Viscometer ●Control Laptop PC 5. Reagents Sample ：Green perilla dressing(Commercially available)，Italian dressing(Commercially available) 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) Enter the following conditions in measurement condition of the sequence mode of controlsoftware. Measurement mode ：Sequence mode Measurement temperature ：25℃ Motor rotation speed ：I； Rise(200→400→600→800→1，000rpm) II； Descent (800→600→400→200rpm) Measurement time ：I (1 second)~III(10 seconds) Repeat count ：3 times Measurement interval ：1 second VWaiting time for temperature stability ：0 minute 2) Place an aluminum spherical probe of o 2 mm and a sample of 300 uL in a container， coverwith a cap and packing， set the sample container in the EMS Viscometer， and click themeasurement button. 3) Measure another samples on the same condition when the measurement of the first sample iscompleted. 7.Example The flow curve of the commercial dressing was shown in Figure 1， and the measurement resultwas shown in Table 1. Both of the samples were able to measure with a variation coefficient of 5% or less under anymotor rotational speed condition. In the Italian dressing， the coefficient of variation (CV%) of viscosity measurement at eachmotor revolution speed slightly increased. It was speculated that the shredded vegetables (solid matter) included in the Italian dressingmight have been influenced by colliding with the spherical probe. For reference， by using sequence measurement， it was possible to measure (to create a flowcurve) in about 3 and half minutes in these samples. Figure 1【.。Flow curves of commercially dressings Table1.Measurement results of commercially dressings Green perilla dressing(Commercially available) Italian dressing(Commercially available) Viscosity(mPa's) Shear rate (s-1) Viscosity(mPa's) Shear rate(s-1) No. Motorrotation speedrpm Ave(n=3) SD(n=3) CV(n=3) Ave(n=3) SD(n=3) CV(n=3) Ave(n=3) SD(n=3) CV(n=3) Ave(n=3) SD(n=3) CV(n=3) 1 200 34.33 0.551 1.6% 6.86 0.087 1.3% 78.20 2.762 3.5% 3.45 0.110 3.2% 2 400 19.70 0.458 2.3% 20.73 0.314 1.5% 41.37 0.351 0.8% 11.94 0.096 0.8% 3 600 14.70 0.265 1.8% 37.44 0.505 1.3% 33.20 0.529 1.6% 21.36 0.272 1.3% 4 800 11.67 0.058 0.5% 56.92 0.091 0.2% 26.63 0.907 3.4% 33.67 0.791 2.3% 5 1000 10.13 0.058 0.6% 76.13 0.091 0.1% 21.23 0.950 4.5% 49.32 1.414 2.9% 6 800 11.63 0.058 0.5% 56.97 0.091 0.2% 25.43 0.462 1.8% 34.82 0.453 1.3% 7 600 13.83 0.058 0.4% 38.75 0.091 0.2% 31.60 0.781 2.5% 22.20 0.363 1.6% 8 400 18.83 0.321 1.7% 21.31 0.240 1.1% 39.90 1.556 3.9% 12.32 0.378 3.1% 9 200 32.17 0.231 0.7% 7.22 0.045 0.6% 83.43 3.691 4.4% 3.26 0.126 3.9% 8. Summary The flow curve of the commercially available dressing using the sequence mode， could becreated in about 3 and half minutes. In the measurement by the sequence mode， it was confirmed that flow curve could be createdwithout breaking the higher-order structure of sample molecule， because the shear rate increasedand the descending viscosity were almost the same. 9. References None. 京都电子工业株式会社-可睦电子(上海)商贸有限公司电话：021-54488867 电邮： kemu-kem@163.com 都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD