Korean Journal of Environmental Biology (환경생물)

Korean Society of Environmental Biology (한국환경생물학회)
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Acute Toxicities of Emulsifiable Concentrates and Granules of Valeriana fauriei Briquet and Alpinia galangal Swartz Essential Oils against Cyprinus carpio

길초근(Valeriana fauriei Briquet) 및 양강근(Alpinia galangal Swartz) 정유의 유제 및 입제제형의 잉어(Cyprinus carpio)에 대한 급성독성

  • Jeon, Hwang-Ju (School of Applied Biosciences, Kyungpook National University) ;
  • Kim, Kyeongnam (School of Applied Biosciences, Kyungpook National University) ;
  • Kim, Yong-Chan (School of Applied Biosciences, Kyungpook National University) ;
  • Lee, Sung-Eun (School of Applied Biosciences, Kyungpook National University)
  • 전황주 (경북대학교 응용생명과학부) ;
  • 김경남 (경북대학교 응용생명과학부) ;
  • 김용찬 (경북대학교 응용생명과학부) ;
  • 이성은 (경북대학교 응용생명과학부)
  • Received : 2018.12.12
  • Accepted : 2018.12.17
  • Published : 2018.12.31
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Abstract

In this study, two essential oils (EOs) extracted from Aleriana fauriei and Alpinia galangal were formulated as an emulsifiable concentrate (EC) and a granule. In the evaluation of their acute toxicity on fishes, Cyprinus carpio adults were used and the toxicities were determined in a static condition. The formulations were prepared from the essential oil extracted by three different methods namely steam distillation (SD), solvent extraction (SE) and supercritical fluid extraction (SFE). The acute toxicities were calculated using $LC_{50}$ values. Among EOs, only the EO extracted by solvent showed acute toxicities on carps. Some of the EC, EOs of Aleriana fauriei did not exhibit toxicity, while EOs from Alpinia galangal showed potent acute toxicities on carps. Among the granules, granules formulated with Aleriana fauriei EO extracted by SD method and Alpinia galangal EO extracted by SFE method showed acute toxicities on fishes. Nevertheless, $LC_{50}$ of ECs and granules formulated with all types of EOs in this study was higher than the fish toxicity level III for pesticides suggested by Korea Rural Development Administration. Furthermore, cytochrome P450 1A and glutathione S-transferase were confirmed as biomarkers in carps in response to the exposure to Alpinia galangal EO extracted by SD and SFE method, tracking Alpinia galangal EO in the aquatic environment.

길초근 및 양강근정유를 유제 및 입제로 제형화한 후 이들의 급성어독성을 측정하였다. 잉어를 이용한 급성독성에 사용된 길초근 및 양강근 정유는 수증기증류법, 핵산을 이용한 용매추출법 및 초임계추출법을 이용하여 추출하였고 이들의 유제 및 입제의 급성어독성은 반수치사농도($LC_{50}$)를 구하여 평가하였다. 길초근 및 양강근 원제 중 용매추출법으로 추출한 정유만이 어독성을 나타내었다. 길초근 및 양강근 추출법별 정유 이용한 유제의 급성어독성 평가한 결과 길초근의 경우 모든 추출법 대하여 독성을 나타내지 않은 반면에 양강근 정유는 추출법에 관계없이 모두 잉어에 대한 어독성이 관측되었다. 입제의 경우 길초근은 용매로 추출한 정유에서 독성이 나타났고, 양강근 정유의 경우 초임계추출법으로 추출한 정유 입제에서만 어독성이 관측되었다. 이러한 결과는 3급 어독성에 해당되는 것으로 환경 중 사용에는 문제가 없다고 사료된다. 살충효과가 뛰어난 양강근 정유의 경우 수증기증류법 및 초임계추출법으로 추출한 정유의 $10mg\;L^{-1}$ 수준에서 노출된 잉어의 분자적 반응을 확인하여 cytochrome P450 1A 효소 및 glutathione S-transferase의 발현이 급격히 증가하였음을 확인하였고 이들은 수계환경 중 양강근 정유의 동태를 관찰하는 바이오마커로서 사용 가능하다고 사료된다.

Keywords

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