压热处理使玉米淀粉颗粒发生什么变化

玉米淀粉是以颗粒形态储存在植物的各种结构中,淀粉颗粒初在植物细胞中仅以微小点出现并迅速充满细胞层。那么您知道压热处理使玉米淀粉颗粒发生什么变化吗？下面就针对问题我们来做一个简单的了解吧！

Corn starch is stored in various structures of plants in the form of granules. Starch granules initially appear as tiny spots in plant cells and quickly fill the cell layer. So do you know what changes will happen to corn starch granules after heat treatment? Now let's make a simple understanding of the problem!

淀粉颗粒是由细胞核周围形成的淀粉层组成,这些淀粉层随着植物的特征而形成特殊的形状和大小,淀粉的形状随着淀粉品种的不同而呈现差别,颗粒大小也有差别。淀粉颗粒含水分高、含蛋白质少、密度小的比较大,其形状也比较整齐,而淀粉颗粒含水分低、含蛋白质多、密度大的比较小。

Starch granules are composed of starch layers formed around the nucleus. These starch layers form a special shape and size with the characteristics of plants. The shape of starch varies with different starch varieties, and the size of starch granules also varies. The starch granules with high water content, low protein content and low density are relatively large, and their shapes are relatively neat, while the starch granules with low water content, high protein content and high density are relatively small.

而这里以玉米淀粉为原料，研究了压热处理前后淀粉颗粒形貌、结晶结构及热焓特性的变化情况。结果表明，淀粉在过量水分含量条件下压热处理后，其所具有的基本颗粒形貌方面的性质已经完全消失。同时，压热处理前后，玉米淀粉结晶结构发生了--定程度的变化，表现为特征峰的消失和新结晶特征峰的形成。压热处理后淀粉的相变焓小于原淀粉。

In this paper, corn starch was used as raw material to study the changes of starch particle morphology, crystal structure and enthalpy characteristics before and after autoclave treatment. The results showed that the properties of starch in terms of basic particle morphology had completely disappeared after autoclave treatment under excessive moisture content. At the same time, the crystalline structure of corn starch has changed to a certain extent before and after autoclave treatment, which is manifested by the disappearance of characteristic peaks and the formation of new crystalline characteristic peaks. The enthalpy of phase change of starch after autoclave treatment is less than that of raw starch.

由于植物种类不同，淀粉颗粒的形态和大小也各不相同。从扫描电子显微镜的照片可以初步加以区分。实际上玉米淀粉颗粒大部分呈压碎状的多角形，它的角不十分尖锐，而是稍带圆的。其颗粒较小，粒径范围为4--26μm玉米淀粉经过压热处理后，颗粒形貌发生了很大的变化，具体表现在颗粒度以及颗粒表面状态皆与原淀粉有明显差别。

Due to different plant species, the shape and size of starch granules are also different. It can be preliminarily distinguished from the pictures of scanning electron microscope. In fact, most of the corn starch granules are in the shape of crushed polygons, and their corners are not very sharp, but slightly round. The particle size is small, ranging from 4 to 26 μ After pressing heat treatment, the morphology of m corn starch granules changed greatly, which showed that the particle size and surface state of m corn starch granules were significantly different from those of the original starch granules.

压热处理使淀粉颗粒完全破碎，重新融合，整个视野中已无完整淀粉颗粒存在，说明压热处理对玉米淀粉的颗粒形貌具有很大影响。经过压热处理后的淀粉，已经无法从扫描电子显微镜中观察的颗粒形貌来判断不同种类的淀粉。

The starch granules were completely broken and re fused by the heat pressing treatment, and there were no complete starch granules in the whole field of vision, indicating that the heat pressing treatment had a great influence on the morphology of corn starch granules. It is no longer possible to judge different kinds of starch from the particle morphology observed in the scanning electron microscope after pressure heat treatment.

压热处理使玉米淀粉颗粒发生什么变化？以上就是问题的相关解答了，您对此有什么想法或者疑惑可以随时提出，或者来我们网站https://www.qiluxinke.com关注分享咨询！

What changes will happen to corn starch granules after autoclave treatment? The above is the relevant answer to the question. You can put forward any ideas or doubts about it at any time, or come to our website https://www.qiluxinke.com Follow the sharing consultation!