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乳熟期甜玉米芯纤维管微结构与成分的比较性研究

, PP. 86-92

Keywords: 膳食纤维,维管结构,NaOH,扫描电镜,甜玉米芯

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Abstract:

探究玉米芯作为膳食纤维补充剂来源的依据.以乳熟期甜玉米芯为原料,采用化学和组织形态学手段,尤其是扫描电镜法,观察其2%NaOH处理前后维管微结构和纤维成分变化.碱处理后,维管部分被消化并出现断裂,维管壁结构模糊且透明,部分物质被降解;2%NaOH消化玉米芯后,其总膳食纤维由25.3%增加至31.1%,其中木质素比例显著增加,而半纤维素减少,玉米芯中膳食纤维含量显著增加.因此,玉米芯是膳食纤维补充剂的理想新资源.

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