고춧가루의 입도별 물리적 특성

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 $150{\sim}600{\mu}m$ accounting for 70.95% of...

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Published inHan'guk Sikp'um Yŏngyang Kwahakhoe chi Vol. 42; no. 3; pp. 421 - 426
Main Authors 오승희(Seung Hee Oh), 강유리(You Ri Kang), 이상훈(Sang Hoon Lee), 황인국(In Guk Hwang), 유선미(Seon Mi Yoo), 김혜영(Hae Young Kim), 이준수(Junsoo Lee), 정헌상(Heon Sang Jeong)
Format Journal Article
LanguageKorean
Published 한국식품영양과학회 2013
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Summary: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 $150{\sim}600{\mu}m$ 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 $0.45g/cm^3$, while tapped bulk density ranged between 0.43 and $0.56g/cm^3$. The Hausner ratio was highest (1.531) at a particle size below $150{\mu}m$ 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 $K_2$ value and stress relaxation characteristics were greatest (1.74 and 44.92%, respectively) at particle sizes of $300{\sim}425{\mu}m$ in the Cheongyang cultivar. The dynamic angle of repose was $32.84-49.84^{\circ}$. Overall, particle sizes below $150{\mu}m$ had the highest compactibility, cohesiveness, and transformation. 입도분포에 따른 고춧가루의 물리적 특성 변화를 살펴보기 위하여 이완밀도, 압축밀도, 압축시험, 안식각, 비회복성일 및 응력이완 특성을 살펴보았다. 이완밀도는 $0.34{\sim}0.45g/cm^3$ 범위에 있었으며, 다짐밀도는 $0.43{\sim}0.56g/cm^3$ 범위에 있었다. 하우스너 비는 청양품종의 $150{\mu}m$ 이하의 입도에서 1.531로 가장 높은 값을 나타내었으며, 응집성도 크게 나타났다. 압축성과 압축비는 각각 0.001351~0.004383 및 1.0062~1.0265 범위의 값을 나타내었고, 입도별 비회복성일은 69.16~90.24% 범위를 나타내었다. $k_2$ 값과 이완성은 청양품종 $425{\sim}300{\mu}m$ 입도에서 각각 1.74 및 44.92%로 가장 높았다. 안식각은 $32.84{\sim}49.84^{\circ}$ 범위를 나타내었다. $425{\sim}300{\mu}m$ 입도를 기준으로 입도가 작아지거나 커짐에 따라 물리적 특성 값이 변화하였다. $150{\mu}m$ 이하의 입도에서는 결착성과 다짐성 그리고 변형의 정도가 크게 나타났다. 따라서 작은 입도의 고춧가루를 수송, 저장할 때보다 각별한 주의가 필요할 것으로 판단된다.
Bibliography:KISTI1.1003/JNL.JAKO201310837321030
G704-000433.2013.42.3.015
ISSN:1226-3311
2288-5978