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1、粉質玉米(Flour corn)：顆粒較軟，呈馬齒形，淀粉含量較膠質玉米高，粉質胚乳細胞大，淀粉粒多為圓形，直鏈淀粉比重高，蛋白質含量較低，與淀粉粒結合不緊密，結構疏松，呈不透明狀；
一般東北烘干玉米大部分是粉質玉米，較易粉碎，切開或咬開斷面呈白粉狀，對畜類利用率效果明顯，乳豬料宜選擇粉質玉米，易糊化，適口性較好。
2、膠質玉米(Flint corn)：顆粒較硬光澤好，半馬齒狀，容重在每升690g/L以上，淀粉含量相對較低點，且支鏈淀粉比重高，其角質胚乳細胞小，淀粉粒小而呈多角形，淀粉粒間充滿蛋白質，因而組織致密，呈半透明狀；粗蛋白質含量比粉質玉米高，但多為角蛋白，畜類較難利用；
膠質玉米粒大飽滿，較難粉碎，破碎后呈碎粒狀，且粒度較均勻，口感差，但核黃素含量較高，適合做禽料，特別是蛋雞料。
河北，河南，山東等地產的大部分是膠質玉米，產量相對比粉質玉米要高。
The English version
1, opaque corn Flour (corn) : the soft particles, horse tooth shape, high gum corn starch content, opaque endosperm cells, starch grains are rounded, high proportion of amylose and protein content is low, combined with starch grains is not tight, loose structure, opaque shaped;
Generally northeast drying corn is mostly opaque corn, crushing, more easily cut or bite open cross section is white powder, the brutish utilization effect obviously, Suckling pig feed should select maize powder, easy pasting and palatability is better.
2, colloid corn (Flint corn) : particles hard good luster, half horse tooth shape, density above every litres of 690 g/L, the starch content is relatively low, and the proportion of branched chain starch is high, the cutin endosperm cells small, starch grains are small and a polygon, starch grains between full of protein, and compact structure, translucent shape; Crude protein content is higher than corn powder, but more for keratin, brutish are harder to use;
Colloid corn big full, more difficult to crush, broken is broken after granular, and granularity evener, taste bad, but the riboflavin content is higher, suitable for birds, especially the layers of material.
Most of hebei, henan, shandong and other real estate is a colloid, corn production is relatively higher than corn powder.
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