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http://dx.doi.org/10.3746/jkfn.2011.40.4.599

Physical Characteristics of Red Pepper Powder by Cultivation Area and Variety  

Oh, Seung-Hee (Dept. of Food Science and Technology, Chungbuk National University)
Kim, Hyun-Young (Dept. of Food Science and Technology, Chungbuk National University)
Hwang, Cho-Rong (Dept. of Food Science and Technology, Chungbuk National University)
Hwang, In-Guk (Dept. of Agro-food Resources, National Academy of Agricultural Science, RDA)
Hwang, Young (Dept. of Agro-food Resources, National Academy of Agricultural Science, RDA)
Yoo, Seon-Mi (Dept. of Agro-food Resources, National Academy of Agricultural Science, RDA)
Kim, Haeng-Ran (Dept. of Agro-food Resources, National Academy of Agricultural Science, RDA)
Kim, Hae-Young (Dept. of Food Science and Nutrition, Yongin University)
Lee, Jun-Soo (Dept. of Food Science and Technology, Chungbuk National University)
Jeong, Heon-Sang (Dept. of Food Science and Technology, Chungbuk National University)
Publication Information
Journal of the Korean Society of Food Science and Nutrition / v.40, no.4, 2011 , pp. 599-605 More about this Journal
Abstract
This study investigated the physical properties of red pepper powders according to cultivation area and variety. Values for density, compressive characteristics, dynamic angle, irrecoverable work, and stress relaxation were analysed. Loose bulk density ranged between 0.40 and 0.50 g/$cm^3$, and tapped bulk density ranged between 0.49 and 0.67 g/$cm^3$. The highest Hausner ratio was 1.369 for PRmanitta cultivated in Eumseong and the lowest value of was 0.194 for Buchon cultivated in Yeongyang. Compressibility ranged between 0.0046 and 0.0092. The highest compression ratio was 1.040 for Myeongjak cultivated in Suwon, and the lowest value was 1.007 for Buchon cultivated in Yeongyang. Dynamic angles ranged between 35.14 and $41.70^{\circ}$. The highest irrecoverable work value was 79.9% for PRmanitta cultivated in Eumseong and the lowest value was 67.9% for Nokgwang cultivated in Suwon. The greatest $k_2$ and relaxation values of stress relaxation characteristics were 1.56 and 42.03%, respectively, for Cheongyang cultivated in Yeongyang.
Keywords
red pepper powder; physical properties; stress relaxation; density; irrecoverable work;
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