搜索结果: 1-11 共查到“Freeze-drying”相关记录11条 . 查询时间(0.109 秒)
Porous frozen material approach to freeze-drying of instant coffee
Freeze-drying desorption drying time initial saturation sublimation
2023/6/19
Porous frozen material with a certain initial porosity was prepared to explore its influence on freeze-drying experimentally. Soluble coffee was selected as the solute in aqueous solution and liquid n...
冷冻干燥中升华界面的临界温度实验（Critical Temperature of Sublimation Interface in Freeze-drying）
冷冻干燥 塌陷温度 冻干显微镜
2010/12/28
利用冻干显微镜（FDM）研究了二元水溶液冷冻干燥过程中升华界面的临界温度，采用差示扫描量热法（DSC）测量了溶液的共晶熔融温度和最大冻结浓缩溶液的玻璃化转变温度。实验结果表明，对于降温时发生共晶的溶液，临界温度为共晶熔融温度，否则将发生融化；对于降温时发生玻璃化转变的溶液，临界温度为塌陷温度，否则将发生塌陷。对于质量分数为5%蔗糖、10%葡萄糖、10%麦芽糖、10%聚乙烯吡咯烷酮（PVP）二元水溶...
微波真空冷冻干燥装置设计与试验（Design and Experiment on Microwave Vacuum Freeze Drying Equipment)
微波 真空冷冻干燥 设计 试验
2010/12/28
阐述了微波真空冷冻干燥装置的总体结构、工作原理以及微波冻干仓的设计要点，详细分析了微波谐振腔、微波真空屏蔽结构和玻璃真空罩的设计，确定了主要工作部件的具体结构和相关参数。冬枣冻干试验研究表明，整机结构合理，性能稳定，安全可靠；与普通真空冷冻干燥相比，在产品质量相同的条件下，干燥时间节省了40.9%，能耗降低55.86%。
Autoxidation and Solvent-Extraction Processes of Linoleic Acid Encapsulated with a Polysaccharide by Freeze-Drying
microcapsule autoxidation solvent-extraction
2009/7/8
Linoleic acid was encapsulated with gum arabic, pullulan or maltodextrin at various weight ratios of the acid to wall materials by freeze-drying, and its autoxidation and solvent-extraction processes ...
基于干燥动力学特性的冷冻干燥过程判别（Judgment of Freeze-drying Process Based on Drying Dynamical Characteristics）
冷冻干燥 干燥动力学特性 升华 解吸 判别
2010/5/5
判断冷冻干燥过程的升华干燥结束点和解吸干燥结束点，对冷冻干燥过程的优化控制有重要意义。以富士苹果为试验材料，在JDG-0.2型真空冻干试验机上进行了冷冻干燥动力学特性试验。采用自制的物料水分在线测量系统，实时测量和绘制苹果块在冷冻干燥过程中的含水率及其变化曲线，根据测量数据分析了物料冷冻干燥动力学特性，提出了升华干燥结束点和解吸干燥结束点的判别方法，便于冷冻干燥过程参数的优化控制。 It is o...
Advances in Transport Phenomena during Freeze-Drying of Food Materials: Fundamentals and Applications
freeze-drying transport phenomena thermal conductivity permeability of water vapor
2009/6/18
Measurement method and values of thermal conductivity and permeability of water vapor were presented for the dried layer of food materials undergoing freeze-drying. Some structural models were develop...
Effect of Relative Humidity during Storage on the Autoxidation of Linoleic Acid Encapsulated with a Polysaccharide by Hot-Air-Drying and Freeze-Drying
autoxidation encapsulation linoleic acid
2009/6/18
Linoleic acid was encapsulated with gum arabic, maltodextrin and pullulan at different weight ratios by hot-air-drying and freeze-drying. The autoxidation processes of the encapsulated linoleic acid w...
The roles of convection, extratropical mixing, and in-situ freeze-drying in the Tropical Tropopause Layer
extratropical mixing in-situ freeze-drying Tropical Tropopause Layer
2008/11/24
Mechanisms for transporting and dehydrating air across the tropical tropopause layer (TTL) are investigated with a conceptual two dimensional (2-D) model. The 2-D TTL model combines the Holton and Get...
Properties of Lactobacillus helveticus CNRZ-32 Attenuated by Spray-Drying, Freeze-Drying, or Freezing
accelerated ripening • attenuated bacterial adjuncts reduced fat cheese Lactobacillus helveticus
2008/3/22
Lactobacillus helveticus CNRZ-32 was attenuated for use in accelerated ripening of Cheddar cheese. The goal was to delay acid production without reducing enzyme activity. Changes in the cellular prope...
The Effects of Freeze Drying and Rehydration on Survival of Microorganisms in Kefir
Kefir Freeze-drying Lyoprotectant
2016/4/20
The purpose of this research was to study the effect of freeze drying on the microorganisms in kefir. Influences of lyoprotectants and rehydrated media (water at 4째C, 25째C; 10% reconstit...
Freeze-Drying of Soybean Protein Solution Containing Added Oil: Effects of Freezing Conditions on Drying Rate
freeze-drying supercooling drying rate vapor permeability
2010/11/22
Solutions of soybean protein with and without added oil were freeze-dried, and the measured drying-rate was analyzed using the uniformly retreating ice front (URIF) model to obtain the coefficient of ...