牛大力微波干燥特性及其动力学模型分析

方良材; 吴钊龙; 刘梦姣; 黄卫萍; 黄浩

doi:10.3969/j.issn.2095-1191.2021.09.026

牛大力微波干燥特性及其动力学模型分析

1 广西农业职业技术大学, 南宁 530007;
2 广西科学院, 南宁 530007;
3 广西药用植物园, 南宁 530023

基金项目:

广西创新驱动发展专项（桂科AA18118015-2）

详细信息

作者简介:
方良材(1982-),https://orcid.org/0000-0003-1774-7939,副教授,主要从事食品工程与食品机械研究工作,E-mail:34532673@qq.com

中图分类号: S567.79
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出版历程
- 收稿日期: 2021-04-05
- 网络出版日期: 2021-12-30

Microwave drying characteristics and kinetic model of Millettia speciosa Champ.

1 Guangxi Agricultural Vocational University, Nanning 530007, China;
2 Guangxi Academy of Sciences, Nanning 530007, China;
3 Guangxi Botanical Garden of Medicinal Plants, Nanning 530023, China

Funds:

Guangxi Innovation Driven Development Projec(tGuike AA18118015-2)

摘要

摘要: 【目的】探究牛大力的微波干燥特性并分析其动力学模型，为完善牛大力微波干燥加工工艺提供参考依据。【方法】测定不同微波功率及不同切片厚度下的牛大力干燥曲线和干燥速率曲线，选用薄层干燥模型中常见的5种动力学模型（Newton、Lagarithmic、Henderson and Pabis、Wang and Singh和Page模型）对牛大力切片干燥模型进行线性拟合。【结果】牛大力的微波干燥曲线呈现加速和降速2个阶段，在同一微波功率下，牛大力切片厚度越小，干燥速率越快；在同一切片厚度下，牛大力微波功率越大，干燥速率就越快。在相同切片厚度、不同微波功率条件下和在相同微波功率、不同切片厚度条件下，牛大力切片干燥过程的水分比（MR）与干燥时间t呈非线性关系，说明模型Wang andSingh不适合用于描述牛大力切片的微波干燥特性；-lnMR与干燥时间t呈非线性关系，说明Newton、Lagarithmic和Henderson and Pabis模型也不适合用于描述牛大力切片的微波干燥特性；而ln（-lnMR）与干燥时间lnt呈线性关系，说明Page模型可用于描述和预测牛大力切片微波干燥特性。以SPSS 20.0对试验数据进行拟合，并求得牛大力微波干燥动力学模型的拟合方程ln（-lnMR）=-4.226-0.19H+0.001P+（1+0.027H+0P）lnt达极显著水平（P<0.01），说明Page模型具有较高的拟合度，即Page模型适用于建立牛大力切片微波干燥动力学模型。经准确性检验，Page模型预测值与试验值拟合度较高，Pearson相关系数为0.999。【结论】Page模型能较好地反映和有效预测牛大力切片微波干燥过程的水分变化情况，适用于建立牛大力切片微波干燥动力学模型，且通过拟合方程能准确预测微波干燥过程某时刻牛大力切片的水分比。
- 牛大力（美丽崖豆藤） /
- 微波干燥 /
- 动力学模型 /
- 干燥模型
Abstract: 【Objective】 To explore the characteristics of Millettia speciosa Champ. microwave drying and its kinetic model, and provide a reference for perfecting M. speciosa Champ. microwave drying processing technology.【Method】 Determined the drying curve and drying rate curve under different powers and different slice thicknesses of M. speciosa Champ., the five most common used(Newton,Lagarithmic,Henderson and Pabis,Wang and Singh and Page models)in thin-layer drying models were used to linearly fit the drying model of M. speciosa Champ.【Result】 M. speciosa Champ. microwave drying curve showed two stages of acceleration and deceleration. Under the same power, the smaller the thickness of M. speciosa Champ. slices, the faster the drying rate;under the same slice thickness, the higher the M. speciosa Champ. microwave drying power, the higher the drying rate fast. Under the same slice thickness and different microwave power conditions, and under the same power and different slice thickness conditions, the moisture ratio(MR)of the M. speciosa Champ. drying process had a non-linear relationship with the drying time t, indicating that the model Wang and Singh was not suitable for describing the microwave drying characteristics of M. speciosa Champ. -lnMR had a non-linear relationship with the drying time t, indicating that the Newton, Lagarithmic and Henderson and Pabis models were not suitable for describing the microwave drying characteristics of M. speciosa Champ.;and ln(-lnMR)and the drying time lnt showed a linear relationship, indicating that the model Page could be used to describe and predict the microwave drying characteristics of M. speciosa Champ. The experimental data was fitted with SPSS 20.0, and the fitting equation ln (-lnMR)=-4.226-0.19H+0.001P+(1+0.027H+0P)lnt of the kinetic model of cattle vigorously microwave drying was found to reach extremely significant level(P<0.01), indicating that the Page model had a high degree of fit, the Page model suitable for establishing a kinetic model of microwave drying of M. speciosa Champ. After the accuracy test, the predicted value of the Page model and the experimental value had a high degree of fit, and the Pearson correlation coefficient 0.999.【Conclusion】 The Page model can better reflect and effectively predict the moisture change in the microwave drying process of M. speciosa Champ. It is suitable for establishing the microwave drying kinetic model of M. speciosa Champ. The fitting equation can accurately predict the moisture ratio of the M. speciosa Champ. at a certain moment in the microwave drying process.
- Millettia speciosa Champ. (beautiful pea vine) /
- microwave drying /
- kinetic model /
- drying model

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