CAJ | 학술논문

将土豆经60COγ射线辐照预处理后进行热风干燥，与未辐照的对比结果表明：辐照预处理后切片土豆的失水过程仅为降速过程，干燥速率增加；辐照剂量增加，干燥速率提高。以辐照剂量、热风温度及土豆切片厚度为试验因素对干燥速率、VC含量、干制品外观质量和复水比等指标进行了二次正交旋转回归的较优的干燥工艺研究，由此获得二次回归的方法和较优的干燥工艺。
장토두경60COγ사선복조예처리후진행열풍간조，여미복조적대비결과표명：복조예처리후절편토두적실수과정부위강속과정，간조속솔증가；복조제량증가，간조속솔제고。이복조제량、열풍온도급토두절편후도위시험인소대간조속솔、VC함량、간제품외관질량화복수비등지표진행료이차정교선전회귀적교우적간조공예연구，유차획득이차회귀적방법화교우적간조공예。
Thermal drying by hot-air is widely used in practice because of its convenience. However, it has some defects such as low efficiency and inferior quality of dried products, which becomes an obstacle of its further application. A new technology, drying bio-products by hot-air after pretreated by irradiation is introduced in this paper. The experiments were performed to study the influence of different dosage of irradiation on the rate of dehydration of potato slices. A conclusion was drawn that the higher the dosage was, the greater the rate of dehydration. On the basis of quadratic orthogonal rotary combination experiments, the regression equations were established for the influence of dosage of irradiation, temperature of hot air, thickness of potato slice on the qualities of appearance, rate of dehydration, VC content of dried potato and the ability of absorbing moisture. Optimal combinations of the three factors on the four objects were respectively obtained. By means of multiple objective nonlinear programming method, the better combination of the three factors on the multiple objects were also obtained.