KSBB Journal

The Korean Society for Biotechnology and Bioengineering (한국생물공학회)
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Ultrasound-Assisted Extraction of Canola Oil Using Supercritical Fluid Process

초음파가 적용된 초임계 유체 공정을 이용한 캐놀라오일 추출

  • Hwang, Ah-Reum (Department of Chemical Engineering, The University of Suwon, Hwaseong) ;
  • Lim, Gio-Bin (Department of Chemical Engineering, The University of Suwon, Hwaseong) ;
  • Ryu, Jong-Hoon (Department of Chemical Engineering, The University of Suwon, Hwaseong)
  • Received : 2010.07.14
  • Accepted : 2010.10.25
  • Published : 2010.10.31
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Abstract

The objective of this study was to investigate the effect of ultrasound on the extraction of oil from canola seeds when supercritical carbon dioxide ($SCCO_2$) was used as an extraction solvent. The ultrasound-assisted $SCCO_2$ extraction were carried out while varying such operating parameters as particle size of crushed canola seed, flow rate of $SCCO_2$, aspect ratio of the extraction vessel, and ultrasound power. The extraction rate decreased with increasing particle size of samples, showing a maximun at a $CO_2$ flow rate of 6.2 L/min. Both the extraction rate and extraction yield increased with a decrease in the aspect ratio of the extraction vessel. For the ultrasoundassisted $SCCO_2$ extraction, the extraction yield was slightly increased when the $CO_2$ flow rate was below 6 mL/min with sample A and B.

본 연구에서는 초임계 이산화탄소의 추출기술에 초음파 적용을 위한 기초 연구로서 캐놀라 씨앗의 입자의 크기, $CO_2$ 유속, 추출기의 종횡비, 초음파 파워 등의 공정변수가 캐놀라 오일의 추출 속도와 수율에 미치는 영향에 대하여 조사하였다. 초임계 이산화탄소 추출에 있어 씨앗을 더 작게 분쇄할수록 더 빠른 추출속도를 보였으며, 추출기의 종횡비가 감소할수록, $CO_2$의 유속이 증가할수록 추출 속도는 증가하였다. 그러나 초음파가 적용된 초임계 이산화탄소 추출의 경우 0.6 mm 이하로 분쇄된 씨앗의 입자 크기 분포가 가장 큰 시료 C의 경우 입자들의 뭉침 현상 증가로 인해 오히려 초음파의 적용이 추출속도와 수율을 크게 감소시켰으며, 12.0 L/min의 $CO_2$ 유속에서도 추출 속도와 수율이 감소하는 것을 확인하였다. 초음파의 적용은 초기 추출시간 50-70분 동안 추출속도 증가에 거의 영향을 미치지 않았으며, 초음파 파워 또한 추출 속도와 수율의 증가에 큰 영향을 미치지 않음을 확인할 수 있었다.

Keywords

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