Abstract
We evaluated physical properties such as density, compressive characteristics, irrecoverable work, and stress relaxation of red pepper powder with different particle sizes. The particle sizes showed a normal distribution in size, with a particle size of accounting for 70.95% of the particles in the Hanbando cultivar and 82.21% in the Cheongyang cultivar. Loose bulk density ranged between 0.34 and , while tapped bulk density ranged between 0.43 and . The Hausner ratio was highest (1.531) at a particle size below in the Cheongyang cultivar. The compressibility and compression ratios were 0.001351~0.004383 and 1.0062~1.0265, respectively. Irrecoverable work ranged between 69.16% and 90.24%. The value and stress relaxation characteristics were greatest (1.74 and 44.92%, respectively) at particle sizes of in the Cheongyang cultivar. The dynamic angle of repose was . Overall, particle sizes below had the highest compactibility, cohesiveness, and transformation.
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