共查询到17条相似文献,搜索用时 46 毫秒
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果蔬干燥技术是果蔬加工中的重要技术之一,主要介绍目前几种新的干燥技术:微波干燥、远红外干燥、真空冷冻干燥、联合干燥,并对这几种干燥方法的应用以及存在问题进行了探讨。 相似文献
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《农村实用工程技术(绿色食品)》2013,(8):38-38
技术简介将果蔬原料进行干燥处理,可以很好地提高其加工储藏性和商品性,对促进果蔬加工产业发展意义重大。目前常用的果蔬脱水方式有热风干燥、真空低温油浴干燥、真空冷冻干燥等。单一干燥方式均有明显的不足,如热风干燥效率低、能耗大、 相似文献
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阐述了联合干燥的定义和技术特点,介绍了各种联合干燥方式在国内外的研究和应用现状,探讨了该技术在果蔬干燥加工中存在的问题和应用前景. 相似文献
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干燥是降低新鲜果蔬腐败率、提高营养物质保留率、延长其保质期并提高产品附加值的有效途径之一。本文阐述了果蔬真空冷冻干燥的原理及特点,总结了果蔬真空冷冻联合干燥的研究进展,并探讨了真空冷冻联合干燥的应用前景及发展,以期为果蔬真空冷冻联合干燥技术的发展提供理论参考。 相似文献
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果蔬干制技术是一种比较常见的果蔬深加工技术。将果蔬采用不同的加工技术进行干制可提高农民收入,改善农民生活质量,甚至对我国农业经济都有很大的影响。本文介绍了现有的果蔬干制加工技术,例如热风干燥技术、真空冷冻干燥技术和变温压差膨化技术等,并对联合干燥技术进行举例概述,最后探讨了今后果蔬干制技术的发展方向。 相似文献
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Daniel I. Onwude Norhashila Hashim Rimfiel B. Janius Nazmi Mat Nawi Khalina Abdan 《Comprehensive Reviews in Food Science and Food Safety》2016,15(3):599-618
The drying of fruits and vegetables is a complex operation that demands much energy and time. In practice, the drying of fruits and vegetables increases product shelf‐life and reduces the bulk and weight of the product, thus simplifying transport. Occasionally, drying may lead to a great decrease in the volume of the product, leading to a decrease in storage space requirements. Studies have shown that dependence purely on experimental drying practices, without mathematical considerations of the drying kinetics, can significantly affect the efficiency of dryers, increase the cost of production, and reduce the quality of the dried product. Thus, the use of mathematical models in estimating the drying kinetics, the behavior, and the energy needed in the drying of agricultural and food products becomes indispensable. This paper presents a comprehensive review of modeling thin‐layer drying of fruits and vegetables with particular focus on thin‐layer theories, models, and applications since the year 2005. The thin‐layer drying behavior of fruits and vegetables is also highlighted. The most frequently used of the newly developed mathematical models for thin‐layer drying of fruits and vegetables in the last 10 years are shown. Subsequently, the equations and various conditions used in the estimation of the effective moisture diffusivity, shrinkage effects, and minimum energy requirement are displayed. The authors hope that this review will be of use for future research in terms of modeling, analysis, design, and the optimization of the drying process of fruits and vegetables. 相似文献
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水箱拉丝机的研究与开发 总被引:1,自引:1,他引:0
分析常用的 3种水箱拉丝机的结构特点 ,特别是对塔轮部分的设计和电机种类及容量的选择进行了深入分析。提出自行研制水箱拉丝机的设计思路 ,尤其是塔轮设计、拉拔速度的确定、电机种类及容量的确定原则 ,并介绍设备特点。新设备有利于节能降耗 ,提高经济效益 相似文献
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探讨果蔬深加工技术及新型果蔬干燥技术发展趋势。比较论述了真空冷冻干燥、微波干燥、真空油炸干燥技术特性,最后重点介绍了变温压差膨化干燥技术特点及国内外发展趋势,期望对果蔬干燥技术的研究与开发提供一定的参考性。 相似文献