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Investigation of Wheat Milling Yield Based on Grain Hardness Parameters

机译：基于籽粒硬度参数的小麦制粉产量研究

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摘要

The objectives of this study were to investigate the relationship between milling yield and grain hardness. A preliminary study was carried out with 20 samples (both hard and soft wheats) using the Brabender hardness tester (BHT) with two grind settings: one-step grind (0-10) and two-step grind (2-12: coarse; 0-8: fine). The two-step grind was correlated with particle size index, single-kernel characterization system (SKCS) hardness, break yield, and reduction yield (P < 0.05), whereas there was no correlation with the one-step grind method. An additional 64 samples were ground with the two-step grind setting to further validate this method. In terms of the BHT crush profile, no discernible differences were observed between varieties for the coarse grind, whereas for the fine grind, hard wheat gave a higher BHT maximum peak height and shorter grinding time compared with soft wheat. The break and reduction yields were significantly correlated with both BHT and SKCS hardness (P < 0.05). The findings indicated that the BHT method could be used to differentiate for milling yield among the different varieties. Based on the results, two milling yield models were developed, and both gave highly significant correlations between the predicted and Buhler mill break (R-2 = 0.791, P < 0.05) and reduction yield (R-2 = 0.896, P < 0.05).
机译：这项研究的目的是研究研磨产量与晶粒硬度之间的关系。使用Brabender硬度测试仪（BHT）对20个样品（硬小麦和软小麦）进行了初步研究，该样品具有两种研磨设置：一步研磨（0-10）和两步研磨（2-12：粗研磨; 0-8：好）。两步研磨与粒度指数，单核表征系统（SKCS）硬度，破碎产率和还原产率相关（P <0.05），而与单步研磨方法则没有相关性。采用两步研磨设置将另外的64个样品研磨，以进一步验证该方法。就BHT压榨曲线而言，未发现粗磨品种之间存在明显差异，而对于细磨，与软麦相比，硬质小麦的BHT最大峰高更高，磨粉时间更短。断裂和还原产量与BHT和SKCS硬度均显着相关（P <0.05）。研究结果表明，BHT方法可用于区分不同品种之间的制粉产量。基于结果，开发了两个铣削产量模型，并且两者都给出了预测的和布勒铣削中断（R-2 = 0.791，P <0.05）与减薄率（R-2 = 0.896，P <0.05）之间的高度显着相关性。 。

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