Mathematic models of thin layer drying in scallop adductor
YU Wei-wei1, LIU Jun-rong1, SHEN Jian2, CONG Hai-hua1
1.College of Food Science and Engineering, Dalian Ocean University, Dalian 116023, China; 2.Key Laboratory of Fishery Equipment and Engineering, Ministry of Agriculture, Fishery Machinery and Instrument Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200092, China
Abstract: The hot air convective drying characteristics of scallop adductor were investigated. The pretreated samples were dried at 45, 55, 65 and 75 ℃, and weighed in a 15 min interval in the first hour, in a 30 min interval in second hour, and in a 60 min interval thereafter at falling speed. Five thin layer drying models including Henderson-Pabis, Wang and Singh， Diamante et al., Page and Newton were established based on the experimental data for the test model by correlation coefficient(R)，decision coefficient(R2)，average deviation(eave), Chi-square test(2)，root-mean-square error(RMSE) and lelative average deviation(P) in order to screen a suitable drying curve. It was found that four models (Henderson-Pabis, Diamante et al., Page and Newton) were proved to be effective. Furthermore, the effects of temperature on model constants of the four models were analyzed, and the three general models (Henderson-Pabis, Page, and Newton ) including drying temperature as variable were effectively used to predict the drying process effectively in the drying temperature range from 45 ℃ to 75 ℃. The models were expressed as MRH=0.9673exp[-(7×10-5T-0.0009)]t, MRP=exp(-0.00323t0.0039T+0.7727) and MRN=exp[-(7×10-5T-0.0008)]t.
2015, Vol. 30 
