Modelling wheat breakage during roller milling using the Double Normalised Kumaraswamy Breakage Function: Effects of kernel shape and hardness
Modelling wheat breakage during roller milling using the Double Normalised Kumaraswamy Breakage Function: Effects of kernel shape and hardness
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DOI：
10.1016/j.jcs.2012.02.002
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发表时间：
2012-05-01
影响因子：
3.8
通讯作者：
Shewry, Peter
中科院分区：
文献类型：
--
作者：
Campbell, Grant M.;Sharp, Calum;Shewry, Peter
采用双归一化Kumaraswamy破碎函数（DNKBF）研究了小麦特性对初裂辊磨破碎的影响。一组45个小麦从9个品种代表的范围内的商业品种在英国种植，并在几个氮肥水平下生长超过三个收获年，在五个辊间隙下锋利到锋利和钝到钝的处置。将所得的粒度分布与DNKBF拟合，以了解DNKBF参数的物理意义，并将它们与形状和硬度相关联。DNKBF参数与硬度密切相关，使用单粒表征系统或粒度指数测量，允许仅从小麦硬度预测0-4000 μ m范围内的粒度分布。残差分析表明，其余的变化与内核质量，更细长的内核打破给稍大的颗粒比更多的球形内核的等效硬度。鉴定了两种类型的破碎，其中一种主要产生许多小胚乳颗粒沿着大麸皮颗粒，而另一种倾向于产生中等大小的颗粒。前者在Dull-to-Dull碾磨和软小麦中占主导地位，而后者在Sharp-to-Sharp碾磨和硬小麦中变得更加突出。(C)2012爱思唯尔有限公司保留所有权利。
The effects of wheat properties on breakage during First Break roller milling, as described by the Double Normalised Kumaraswamy Breakage Function (DNKBF), were investigated. A set of 45 wheats from nine varieties representing the range of commercial varieties grown in the UK, and grown over three harvest years at several nitrogen fertiliser levels, were milled at five roll gaps under Sharp-to-Sharp and Dull-to-Dull dispositions. The resulting particle size distributions were fitted with a DNKBF in order to understand the physical significance of the DNKBF parameters and to relate them to shape and hardness. The DNKBF parameters related strongly to hardness as measured using either the Single Kernel Characterisation System or Particle Size Index, allowing the particle size distribution over the range 0-4000 mu m to be predicted solely from wheat hardness. A residual analysis showed that the remaining variation was correlated with kernel mass, and that more elongated kernels break to give slightly larger particles than more spherical kernels of equivalent hardness. Two types of breakage are identified, one of which principally produces many small endosperm particles along with large bran particles, while the other tends to produce mid-sized particles. The former dominates under Dull-to-Dull milling and for soft wheats, while the latter becomes more prominent under Sharp-to-Sharp milling and for harder wheats. (C) 2012 Elsevier Ltd. All rights reserved.