1. Clean up

清理玉米中含有各种尘芥、有机和无机杂质。为了保证生产和产品质量，对玉米中存在的杂质必须进行清理。清理玉米的方法，主要采用筛选、风选等。清理设备有振动筛、比重去石机、永磁滚筒和洗麦机等。

Cleaning corn contains all kinds of dust mustard, organic and inorganic impurities. In order to ensure safe production and product quality, impurities in corn must be cleaned up. The main methods of cleaning corn are screening and air separation. The cleaning equipment includes vibrating screen, specific gravity stone remover, permanent magnet drum and wheat washing machine.

2、浸泡

2. Soaking

玉米浸泡方法普遍采用金属罐几只或几十只用管道连接组合起来，用水泵使浸泡水在各罐之间循环流动，逆流浸泡。

Corn soaking method generally uses several or dozens of metal tanks connected by pipes, and the soaking water circulates between the tanks by water pump, and then immerses in countercurrent.

3、玉米粗碎

3. Corn crunching

粗碎的目的主要是将浸泡后的玉米破成10块以上的小块，以便分离胚芽。

The main purpose of coarse crushing is to break the soaked corn into more than 10 pieces so as to separate the germ.

玉米粗碎大都采用盘式破碎机。粗碎可分两次进行。次把玉米破碎到4~6块，进行胚芽分离；第二次再破碎到10块以上，使胚芽全部脱落，进行第二次胚芽分离。

The disc crusher is mostly used in corn coarse crushing. Coarse crushing can be carried out twice. For the first time, the corn was broken into 4 ~ 6 pieces for germ separation; for the second time, it was broken to more than 10 pieces to make all the germs fall off, and the second time was to separate the germ.

4、胚芽分离

4. Germ separation

目前国内胚芽分离主要是使用胚芽分离槽。优点是操作比较稳定，缺点是占地面积大，耗用钢材多，分离效率低，一般不超过85%。

At present, germ separation trough is mainly used in China. The advantages are relatively stable operation, but the disadvantages are large floor area, large steel consumption and low separation efficiency, generally less than 85%.

5、玉米磨碎

5. Corn grinding

经过分离胚芽后的玉米碎块和部分淀粉的混合物，为了提取淀粉，必须进行磨碎，破坏玉米细胞细胞，游离淀粉颗粒，使纤维和麸皮分开。

In order to extract starch, it is necessary to grind the mixture of corn fragments and part of starch after separation of germ, so as to destroy corn cell cells and free starch granules, so as to separate fiber from bran.

6、淀粉筛分

6. Starch screening

玉米碎块经过磨碎后，得到玉米糊，可以采用筛分的方法将淀粉和粗细渣分开。常用的筛分设备有六角筛、平摇筛、曲筛和离心筛等。

After the corn fragments are ground, the corn paste can be obtained. The starch and the coarse and fine residues can be separated by sieving method. The commonly used screening equipment includes hexagonal screen, flat shaking screen, curved screen and centrifugal screen.

玉米淀粉有以下用途：

Corn starch has the following uses:

1、玉米淀粉与水或牛奶混合后有独特的外观和质感，常用来掺在白糖粉作为抗粘结剂。

1. Corn starch mixed with water or milk has a unique appearance and texture, which is often used as an anti binder in sugar powder.

2、玉米淀粉常用作布丁等食品的凝固剂。利用双层蒸锅，以牛奶、砂糖、玉米粉和增香剂等配料就可轻易制作出简单的玉米粉布丁。

2. Corn starch is often used as coagulant in food such as butin. A simple corn flour pudding can be easily made with milk, sugar, corn flour and flavoring agent in a double steamer.

3、玉米淀粉也在菜和法国菜里用作增稠剂。菜里的“勾芡”，一般就是用玉米淀粉加上水制成的。

3. Corn starch is also used as a thickener in Chinese and French dishes. The "thicken" in Chinese cuisine is usually made of corn starch and water.

玉米淀粉制得玉米面的营养价值：

The nutritional value of corn flour made from corn starch is as follows

1、玉米面中含有亚油酸和维生素E，能使人体内胆固醇水平降低，从而减少动脉硬化的发生。

1. Corn flour contains linoleic acid and vitamin E, can reduce the level of cholesterol in the human body, thereby reducing the occurrence of atherosclerosis.

2、玉米面中含钙、铁质较多，可防止高血压、冠心病。

2. Corn flour contains more calcium and iron, which can prevent hypertension and coronary heart disease.

3、粗磨的玉米面中含有大量的赖氨酸，可抑制肿瘤生长。

3. Coarse ground corn flour contains a lot of lysine, which can inhibit tumor growth.

4、玉米面含有微量元素硒，硒能加速人体内的氧化物分解，抑制恶性肿瘤

4. Corn flour contains trace element selenium, which can accelerate the decomposition of oxides in human body and inhibit malignant tumor

5、玉米面中丰富的膳食纤维，能缩短食物通过消化道的时间，减少有毒物质的吸收和致癌物质对结肠的刺激，因而可减少结肠癌的发生。

5. The rich dietary fiber in corn flour can shorten the time of food passing through the digestive tract, reduce the absorption of toxic substances and the stimulation of carcinogens to the colon, thus reducing the occurrence of colon cancer.