CAJ | 학술논문

目前低聚糖的干燥技术主要有喷雾干燥以及冷冻干燥，存在操作温度过高、成本较高、不能处理大批量物料等缺点。为了解决这些问题，本文提出了以刮膜式薄膜蒸发器对低聚糖提取液进行单步干燥操作。实验分析了设备的处理性能，并利用响应面法拟合得到了温度、压强、进料速度与单位面积蒸发速率之间关系的数据模型。模型可以很好地符合实际结果。在温度、压强、进料速度分别设定为70.0℃、1.0kPa、0.50L/h的条件下，最终得到的产物含水率为2.1%。这表明，工艺路线以及预测方法是可行的，工艺保证了物料较好的流动性，达到了较高的分离效率，得到了质量较高的最终产品。
목전저취당적간조기술주요유분무간조이급냉동간조，존재조작온도과고、성본교고、불능처리대비량물료등결점。위료해결저사문제，본문제출료이괄막식박막증발기대저취당제취액진행단보간조조작。실험분석료설비적처이성능，병이용향응면법의합득도료온도、압강、진료속도여단위면적증발속솔지간관계적수거모형。모형가이흔호지부합실제결과。재온도、압강、진료속도분별설정위70.0℃、1.0kPa、0.50L/h적조건하，최종득도적산물함수솔위2.1%。저표명，공예로선이급예측방법시가행적，공예보증료물료교호적류동성，체도료교고적분리효솔，득도료질량교고적최종산품。
Currently spray drying process and freeze-drying process are widely used in oligosaccharide drying process. However,there exists several weaknesses in temperature,cost,and material handing capacity. To solve these problems,single-step drying in agitated thin-film evaporator was put forward to find a new way of oligosaccharides drying. The relationship between temperature,pressure,feed rate and evaporation rate per unit area was investigated,and response surface methodology (RSM) was used to fit the data. A model which was in good agreement with the experimental data was obtained. The model determined that under the condition of 70.0℃,1.0kPa and 0.50L/h the equipment could reach the maximum capacity. Finally,2.1% moisture content was obtained. The process route and prediction method were feasible. Meanwhile,it provided a new method to treat this kind of material.