Wheat grinding process with low moisture content: A new approach for wholemeal flour production

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Abstract

The objective of this study was to determine the grinding characteristics of wheat with a low moisture content. Two kinds of wheat—soft spelt wheat and hard Khorasan wheat—were dried at 45◦C to reduce the moisture content from 12% to 5% (wet basis). Air drying at 45◦C and storage in a climatic chamber (45◦C, 10% relative humidity) were the methods used for grain dehydration. The grinding process was carried out using a knife mill. After grinding, the particle size distribution, average particle size and grinding energy indices were determined. In addition, the dough mixing properties of wholemeal flour dough were studied using a farinograph. It was observed that decreasing the moisture content in wheat grains from 12% to 5% made the grinding process more effective. As a result, the average particle size of the ground material was decreased. This effect was found in both soft and hard wheat. Importantly, lowering the grain moisture led to about a twofold decrease in the required grinding energy. Moreover, the flour obtained from the dried grains showed higher water absorption and higher dough stability during mixing. However, the method of grain dehydration had little or no effect on the results of the grinding process or dough properties.

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APA

Hassoon, W. H., Dziki, D., Miś, A., & Biernacka, B. (2021). Wheat grinding process with low moisture content: A new approach for wholemeal flour production. Processes, 9(1), 1–11. https://doi.org/10.3390/pr9010032

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