Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Effects of Microwave, Ultrasound and Roasting Pretreatments on Hot Water Extraction of Acanthopanax senticosus

마이크로파, 초음파 및 볶음 전처리가 오가피의 열수 추출특성에 미치는 영향

  • Chung, Hun-Sik (Food and Bio-Industry Institute, Kyungpook National University) ;
  • Youn, Kwang-Sup (Department of Food Science and Technology, Catholic University of Daegu)
  • 정헌식 (경북대학교 식품생물산업연구소) ;
  • 윤광섭 (대구가톨릭대학교 식품산업학부)
  • Published : 2005.04.01
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Abstract

A comparative study of pretreatment and extraction methods was conducted to investigate their effects on nutritional and bioactive components during hot-water extraction of Acanthopanax senticosus. The herb samples, ground and sifted $(8\~20\;mesh)$ were pretreated with ultrasound (20 kHz), microwave (2,450 MHz) or roasting $(180^{\circ}C)$ for 10 min, and then extracted by a boiling $(180^{\circ}C)$ under atmospheric pressure or a pressured boiling $(121^{\circ}C)$ for 2 hr. In general, the pretreatments improved the extraction efficiency and the DPPH radical scavenging activity of extract. Particularly, the extraction yields of soluble solids, total sugar and phenolic compounds were increased in microwaving methods, and the protein yield and the radical scavenging activity were higher in roosting pretreatment. Yields of soluble solids, total sugar, protein and phenolic compouds in pressured extraction were higher than those in nonpressured extraction. These results suggested that pretreatment including microwave radiation, sonication and roasting and pressured extraction can be utilized for improving the extraction efficiency of A. senticosus.

오가피(Acanthopanax senticosus)로부터 영양 및 기능성 성분의 열수추출 수율을 증대시킬 수 있는 방법을 개발하기 위하여 추출 전처리 및 방법의 효과를 검토하였다. 오가피를 분쇄, 체질$(8\~20\;mesh)$하고 초음파(20 kHz), 마이크로파 (2,450 MHz) 또는 볶음$(180^{\circ}C)$ 처리를 10분 동안 실시한 후 물을 용매로 상압$(100^{\circ}C)$ 추출과 가압$(121^{\circ}C)$ 추출을 각각 2시간 동안 실시하였다. 전반적으로 전처리는 성분들의 추출수율과 유리기 소거능을 증가 시키는 경향을 보였다. 특히, 가용성 고형물, 총당 및 페놀성 물질의 추출수율은 마이크로파와 초음파에 의해, 단백질의 추출수율과 유리기 소거능은 볶음처리에 의해 더욱 증가됨을 보였다. 상압추출보다 가압추출에 의해 가용성 고형물, 총당, 단백질 및 페놀성 물질의 추출수율이 증대되는 경향을 보였다. 이로써 초음파, 마이크로파 및 볶음 전처리 및 가압추출은 오가피의 추출효율 향상에 유효한 방법인 것으로 판단된다.

Keywords

References

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