Study on Correlation between the Starch Content of Potato Tuber and its Viscoelastic Characteristics
When potato tubers had received the exogenic action, the water and starch in tubers generated tougor pressure which would act on cell walls in the tuber tissue, so the starch content and water ratio have an obvious effect on the mechanical characteristics of potato tubers. In order to provide a mechanical method for detecting the starch content of potato tubers, the correlation between viscoelastic characteristics and the starch content of tubers was studied. In the research, the tubers of Desiree potato were compressed by cylindrical probe, and showed nonlinear stress-strain curves. The viscoelastic model of potato tuber was established, and its viscoelastic parameters were determined. Meanwhlie, the starch content and water ratio of potato tuber were detected after mechanical tests, and the correlation between viscoelastic parameters and starch content of potato tuber was analysed. According to the results of correlation analysis, the viscosity coefficient which had been obtained from the viscoelastic model was significantly correlated with the starch content and water ratio. Finally, the regression equation of starch content and the viscosity coefficient was determined.
potato tuber viscoelastic characteristics starch content correlation
Wenbin Guo Chunguang Wang Jingjing Gao
College of Mechanical and Electrical Engineering Inner Mongolia Agrcultural University Hohhot, China Baotou Light Industry Vocational Technical College Baotou, China
国际会议
哈尔滨
英文
906-910
2012-06-16（万方平台首次上网日期，不代表论文的发表时间）