Effects of Technical Parameters of Twice Cutting on Quality of Microwave Expanded Cut Stem

In order to investigate the influences of technical parameters of twice cutting on the quality of microwave expanded cut stem, uniform experimental design was adopted to study the effects of different combinations of sliced thickness and cutting width on the filling value, processing endurance and sensory quality of microwave expanded cut stem. Based on that, a regression equation for cutting parameter combination and cut stem quality was developed and verified via external validations. The results showed that: 1) The percentage of long strands and filling value extremely significantly positively correlated,while the percentage of broken strands extremely significantly negatively correlated to sliced thickness and cutting width. 2)At the same sliced thickness, the sensory quality decreased with the increase of cutting width; at the same cutting width, the sensory quality scores increased first then decreased with the increase of sliced thickness. 3) The best integrated quality of microwave expanded cut stem achieved when sliced thickness ranged from 0.75 to 0.85 mm and cutting width from 0.30 to 0.35.