芒果微波干燥特性及数学模型研究
Mango Microwave Drying Characteristics and Kinetic Model Analysis
甘婷 1易萍 2黄敏 1盛金凤 1郑兰娟 3林丹 4张兰 2李丽1
作者信息
- 1. 广西壮族自治区农业科学院农产品加工研究所,广西南宁 530007;广西果蔬贮藏与加工新技术重点实验室,广西南宁 530007
- 2. 广西壮族自治区农业科学院农产品加工研究所,广西南宁 530007
- 3. 浙江农业商贸职业学院,浙江绍兴 312000
- 4. 广东省食品工业研究所有限公司,广东广州 510000
- 折叠
摘要
为研究芒果微波干燥特性,并确定其最适干燥动力学模型.以芒果为原料,探讨不同微波功率(1250 W和2500 W)和切片厚度(8、10、12 mm)对芒果干基含水率和干燥速率的影响;其次,采用6种常见的数学模型对微波干燥进行非线性拟合,得到芒果微波干燥动力学模型.结果表明,芒果微波干燥过程主要表现为升速阶段和降速阶段.微波功率越大,干燥速率越快,干燥耗时越短;切片厚度越大,干燥速率越慢,干基含水率到达平衡所需时间越长.芒果微波干燥过程中的水分有效扩散系数随微波功率增加而增大.通过模型拟合发现,Wang and Singh模型是芒果微波干燥的最佳模型,具有最大决定系数R2(0.9957)、最低卡方x2(0.0005)和最小残差平方和RSS(0.0079),可有效描述芒果微波干燥过程.
Abstract
In order to study the microwave drying characteristics of mango and to determine its optimal drying kinetic model.The effects of different microwave power(1250 W and 2500 W)and slice thickness(8,10 mm and 12 mm)on the moisture content and drying rate of mango were explored with mango as a raw material;secondly,six common mathematical models were used for non-linear fitting of microwave drying to obtain the mango microwave drying kinetic model.The results showed that the microwave drying process of mango was mainly manifested in the ascending and descending stages.The higher the microwave power,the faster the drying rate and the shorter the drying time;the greater the slice thickness,the slower the drying rate,and the longer the time required for the moisture content of the dry base to reach equilibrium.The effective diffusion coefficient of moisture in the microwave drying process of mango increased with the increase of microwave power.Through model fitting,it was found that the Wang and Singh model was the best model for mango microwave drying with the maximum coefficient of determination R2(0.9957),the minimum chi-square x2(0.0005),and the minimum residual sum of squares RSS(0.0079),which can effectively describe the mango microwave drying process.
关键词
芒果/微波干燥/干燥特性/动力学模型Key words
mango/microwave drying/drying characteristics/kinetic model引用本文复制引用
基金项目
国家重点研发计划专项(2021YFD1600105)
国家香蕉产业技术体系建设项目(CARS-31)
广西自然科学基金(2021GXNSFAA075035)
广西农科院科技发展基金(桂农科2022JM73)
科技先锋队"强农富农""六个一"专项行动项目(桂农科盟202315)
浙江农业商贸职业学院校级科研项目(KY202225)
出版年
2024
NETL
NSTL
万方数据