Rheology study of supercritically extracted tea-oil
The rheological analysis on dynamic shear rate-viscosity relationship of tea-oil extracted from tea-oil tree seeds by supercritical extraction method was carried out at gradient temperatures and constant shear rate, respectively. The results show that at 20, 40, 60 and 80 ℃, once the shear rate increases gradually, the torque enlarges correspondingly, while the viscosity shows little difference. However, at the constant shear rate, the rising temperature results in a steady downtrend on tea-oil viscosity. This results reveal that tea-oil viscosity is not closely correlated with shear rate at constant temperature, yet negatively correlated with temperature at constant shear rate.
tea-oil rheology dynamic shear rate viscosity supercritical extraction
ZHANG Dang-quan(张党权) CHEN Sheng-ming(陈胜铭) PENG Wan-xi(彭万喜) LIU Qi-mei(刘其梅) GU Zhen-jun(谷振军) FAN Shao-gang(樊绍刚) DENG Shun-yang(邓顺阳)
Key Lab of Non-wood Forest Products of State Forestry Administration, Central South University of Fo Institute of Rheological Mechanics & Material Engineering, Central South University of Forestry and
国际会议
长沙
英文
506-508
2008-09-28（万方平台首次上网日期，不代表论文的发表时间）