Department of Thermal Technology, University of Life Sciences, Doświadczalna 44, 20-280 Lublin, Poland.
Division of Cereal Technology, Faculty of Food Sciences, Warsaw University of Life Sciences, Nowoursynowska 159C, 02-786 Warsaw, Poland.
J Food Sci Technol. 2014 Oct;51(10):2648-55. doi: 10.1007/s13197-012-0807-8. Epub 2012 Aug 26.
The physical properties of wheat kernel were determined and related to pulverizing performance by correlation analysis. Nineteen samples of wheat cultivars about similar level of protein content (11.2-12.8 % w.b.) and obtained from organic farming system were used for analysis. The kernel (moisture content 10 % w.b.) was pulverized by using the laboratory hammer mill equipped with round holes 1.0 mm screen. The specific grinding energy ranged from 120 kJkg(-1) to 159 kJkg(-1). On the basis of data obtained many of significant correlations (p < 0.05) were found between wheat kernel physical properties and pulverizing process of wheat kernel, especially wheat kernel hardness index (obtained on the basis of Single Kernel Characterization System) and vitreousness significantly and positively correlated with the grinding energy indices and the mass fraction of coarse particles (> 0.5 mm). Among the kernel mechanical properties determined on the basis of uniaxial compression test only the rapture force was correlated with the impact grinding results. The results showed also positive and significant relationships between kernel ash content and grinding energy requirements. On the basis of wheat physical properties the multiple linear regression was proposed for predicting the average particle size of pulverized kernel.
通过相关分析，确定了小麦籽粒的物理特性，并将其与粉碎性能相关联。使用来自有机农业系统的约 19 个蛋白质含量（11.2-12.8%湿基）相似的小麦品种进行了分析。将含水量为 10%湿基的籽粒用配备 1.0 毫米圆孔筛的实验室锤式粉碎机进行粉碎。比粉碎能范围为 120-159 kJkg(-1)。基于获得的数据，发现了许多显著的相关性（p<0.05），特别是小麦籽粒硬度指数（基于单粒特性系统获得）和玻璃质度与粉碎能指数和粗颗粒（>0.5 毫米）的质量分数呈显著正相关。在基于单轴压缩试验确定的籽粒机械性能中，仅断裂力与冲击粉碎结果相关。结果还表明，灰分含量与粉碎能需求之间存在正相关关系。基于小麦的物理特性，提出了用于预测粉碎后颗粒平均粒径的多元线性回归。
