Abstract
Abstract Fenugreek (Trigonella foenum-graecum) seed known for its many medicinal properties is studied for its grinding characteristics in an impact-type hammer mill. The particle size distribution (PSD) data of powder was found to regress very well with well-known mathematical Rosin–Rammler–Bennet model. Several statistical parameters of the PSD such as mass relative span, size guide number, skewness, uniformity index, uniformity coefficient were also estimated. Weight mean diameter for the entire range of grinding was between 395.8 and 620.8 µm. Specific energy consumption (32.4–115.2 kJ/kg) increased linearly with increase in size reduction ratio (4.53–7.10). Fenugreek powder fraction with less than 200 µm resulted in highest oil yield. Oil yield was found increasing with increase in size reduction ratio.
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