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首页> 外文学位 >IMPACT MILLING AND AIR CLASSIFICATION OF GRAIN LEGUMES.
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IMPACT MILLING AND AIR CLASSIFICATION OF GRAIN LEGUMES.

机译：影响谷物的铣削和空气分类。

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摘要

Samples of eight grain legumes were dehulled and subsequently fractionated by pin milling and air classification into coarse (starch-rich) and fine (protein-rich) fractions. The coarse/fine yield ratios were similar for samples of a particular legume but differed considerably among legumes. All non-starch components examined were concentrated in the fine fractions. Fraction composition was dependent upon the composition of the original flour.; Significant differences among legumes in the recovery of starch in the coarse fraction (defined as starch separation efficiency or SSE) were not detected. However, significant differences in the recovery of protein in the fine fraction (defined as protein separation efficiency or PSE) were observed. It was concluded that differences among legumes in PSE resulted from differences in their milling characteristics.; Factors known or suspected to affect the milling characteristics of wheats were examined as possible determinants of the pin milling quality of legumes. Significant correlations were detected between PSE and: (1) the crude fibre content of the seed, (2) the water-insoluble cell wall content of the seed, (3) the susceptibility of the cell wall to breakdown, and (4) seed hardness.; The effects of air-classifier cut-size and seed moisture content on the yield and composition of air-classified fractions from several legumes were determined. In general, an increase in cut-size resulted in: (1) an increase in the yield of the fine fraction, (2) an increase in the starch contents and a decrease in the protein contents of the coarse and fine fractions, (3) decreased SSE, and (4) improved PSE. As seed moisture was reduced, the yield of the coarse fraction, the protein contents of the coarse and fine fractions, and SSE declined, whereas the yield of the fine fraction, the starch contents of the coarse and fine fractions, PSE, and the neutral detergent fibre content of the fine fraction showed increases.
机译：将八个谷物豆类的样品脱皮，然后通过针磨和空气分级分离为粗（富含淀粉）和细（富含蛋白质）馏分。特定豆类样品的粗/细得率相似，但豆类之间差异很大。所有检查的非淀粉成分均浓缩成细颗粒。馏分组成取决于原始面粉的组成。未检测到豆类中粗级分淀粉回收率之间的显着差异（定义为淀粉分离效率或SSE）。但是，观察到细级分蛋白质回收率的显着差异（定义为蛋白质分离效率或PSE）。结论是，PSE中豆类之间的差异是由于其碾磨特性的差异引起的。研究了已知或怀疑会影响小麦碾磨特性的因素，这些因素可能是决定豆类针磨品质的因素。在PSE与以下之间发现了显着相关性：（1）种子的粗纤维含量，（2）种子的水不溶性细胞壁含量，（3）细胞壁易碎的敏感性，以及（4）种子硬度。;确定了空气分级器切块尺寸和种子含水量对几种豆类的空气分级馏分的产量和组成的影响。通常，切块尺寸的增加导致：（1）细级分产量的增加，（2）粗级和细级分淀粉含量的增加和蛋白质含量的降低，（3 ）降低了SSE，以及（4）改善了PSE。随着种子水分的减少，粗级分的产率，粗级和细级分的蛋白质含量以及SSE下降，而细级分的产量，粗级和细级分的淀粉含量，PSE和中性粒洗涤剂纤维中细组分的含量显示出增加。

著录项

  • 作者

    TYLER, ROBERT THOMAS.;

  • 作者单位

    The University of Saskatchewan (Canada).;

  • 授予单位 The University of Saskatchewan (Canada).;
  • 学科 Agriculture Food Science and Technology.
  • 学位 Ph.D.
  • 年度 1982
  • 页码
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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 农产品收获、加工及贮藏;
  • 关键词

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