首页|扇贝闭壳肌薄层干燥的数学模型

扇贝闭壳肌薄层干燥的数学模型

Mathematic models of thin layer drying in scallop adductor

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以栉孔扇贝Chlamys farreri闭壳肌为研究对象, 对其热风干燥特性进行了研究.将扇贝样品经处理后于45、 55、65、 75 ℃ 温度下进行热风干燥, 监测样品的质量变化, 所采取的监测频率为干燥开始的第1小时监测4次, 第2小时监测2次, 第3小时后每小时监测1次, 所有的干燥过程都处于降速阶段, 并用薄层干燥模型对测量结果进行处理, 选用Henderson-Pabis、Wang and Singh、Diamante et al.、Page、Newton 5种数学模型进行拟合, 通过计算相关系数(R)、 决定系数(R2)、 平均偏差(eave)、 卡方检验(χ2)、 均方根误差(RMSE)、 相对平均偏差(P)的大小, 来检验拟合程度.结果表明: 在45、55、65、75 ℃ 干燥温度下, Henderson-Pabis、 Diamante et al.、Page、Newton 4个模型有效; 进一步分析4个模型中模型常数随温度的变化, 发现其中Henderson-Pabis、 Page、 Newton 3个模型参数中含有干燥温度为变量的通式模型, 可以有效地预测干燥温度在45~75 ℃时的干燥进程, 3个通式模型依次为MRH=0.9673exp[-(7×10-5 T-0.0009)]t、 MRP=exp(-0.00323t0.0039T+0.7727)和MRN=exp[-(7×10-5T-0.0008)]t.
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(χ2),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.

scallop adductorthin layer dryingmathematic model

俞微微、刘俊荣、沈建、丛海花

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大连海洋大学食品科学与工程学院, 辽宁大连116023

中国水产科学研究院渔业机械仪器研究所农业部渔业装备与工程重点开放实验室, 上海200092

扇贝闭壳肌 薄层干燥 数学模型

国家现代农业技术产业体系项目

NYCYTX-47

2015

大连海洋大学学报
大连海洋大学

大连海洋大学学报

CSTPCDCSCD北大核心
影响因子:0.913
ISSN:2095-1388
年,卷(期):2015.30(2)
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