玉米皮是重要的饲料原料之一，但由于其含有大量的非淀粉多糖，造成饲料消化吸收率降低，严重限制了其在饲料行业的应用。对玉米皮进行机械预处理，可以提高其饲料利用率，并促进后续生物利用，具有重要的经济效益。以玉米皮为主要原料，比较球磨和刀片粉碎对玉米皮物理特性、化学特性以及酶解效率的影响。结果表明，玉米皮经球磨处理和刀片粉碎后，水溶性总糖含量分别提高了1.6倍和2.0倍，还原糖含量分别提高了1.8倍和2.6倍，阿魏酰聚糖含量分别提高了1.1倍和1.6倍。机械处理的玉米皮酶解后较原样酶解，其水溶性总糖含量分别提高了2.2倍和3.0倍，还原糖含量分别提高了2.5倍和3.7倍，阿魏酰聚糖含量分别提高了1.3倍和2.0倍。经刀片粉碎后的玉米皮酶解效率高于球磨处理的玉米皮。

Maize bran is one of the important feedstuff, because of it contains lots of non-starch polysaccharides, resulting in the decrease of feed digestion and absorption rate and it seriously restrict its application in feed industry. The mechanical pretreatment of maize bran can improve its feed utilization rate and promote the subsequent biological utilization, which has important economic benefits. Effects of physical properties, chemical properties, and enzymatic efficiency by ball milling and blade crushing from maize bran was investigated in this paper. The results showed that the maize bran were crushed by ball milling and blade crushing, the total soluble sugar contents of maize bran were respectively increased 1.6 times and 2.0 times, reducing sugar contents were respectively increased by 1.8 times and 2.6 times, and the contents of feruloyl oligosaccharides was increased by 1.1 times and 1.6 times, respectively. With xylanase and cellulase hydrolysis of maize bran after ball milling and blade crushing, the total soluble sugar contents were increased by 2.2 fold and 3.0 fold, reducing sugar contents were increased by 2.5 fold and 3.7 fold, and feruloyl polysaccharide contents were increased by 1.3 fold and 2.0 fold, respectively, compared to those of maize bran after enzymatic hydrolysis without mechanical treatment. The efficiency of enzymatic hydrolysis of maize bran after blade crushing was higher than that of maize bran after ball milling.