芦荟凝胶的真空冻干研究

Research on the Vacuum Freeze-Dryin g Method for the Gel of Aloes

为了对芦荟凝胶进行真空冷冻干燥,首先通过简单的电阻装置测定了芦荟凝胶的共晶点与共融点。然后按照一定的升温程序对芦荟凝胶进行了冻结与升华干燥,并得到了芦荟凝胶的真空冻干曲线。最后通过对真空冻干芦荟凝胶与喷雾干燥芦荟凝胶的指标测定,将两种加工方法下芦荟凝胶所含的矿物质、蛋白质、有机酸、外观等指标进行了对比,结果表明,真空干燥能较好地保持芦荟凝胶的生物活性与特征。

With the simple instrument of resistance,the crystallizing point and the melting point of the gel of alo es were determined before vacuum freeze-drying,then the gel of aloes were freezed and lyophilized accord ing to a fixed procedure of rising temperature,after that a curve of vacuum freeze-drying for gel of aloes was ac hieved.At last the spaying-drying method for gel of aloes was processed,and some items of gel of aloes which used vacuum freeze-drying method and spraying-drying method were determined separately,these items include mineral,albumen,organic acid,appearance,etc..After the co ntrast on these items,a result was achieved:the biological activatio n and characteristics can be keeped w ell with the method of vacuum freeze-dry ing.