Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)

Society of Cosmetic Scientists of Korea (대한화장품학회)
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Studies on the Antioxidative Effect of the Buckwheat (Fagopyrum esculentum Moench) Extract and its Protective Role against Cadmiun-mediated Stress

메밀의 항산화 및 카드뮴 방어 효능에 관한 연구

  • Published : 2005.06.01
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Abstract

In the present study, the Chuncheon buckwheat extracts prepared from its seed coats, seeds and stems were used to determine anti-oxidative effects, the content of rutin and phytic acid, and the protective role against cadmium at the cellular level. futhermore, it was evaluated whether the buckwheat, mainly known as a healthy food source, might be applicable to functional cosmetics. Up to $100 {\mu}g/mL$ of the extract was not toxic in HaCaT and B16F10 cell lines using MTT assay. The anti-oxidative capacity of superoxide radicals was shown in seed coats extracts > stem extracts=seed extracts. Although its content of rutin, known as one of effective anti-oxidants, mainly exists in the stem, any extract did not eliminate hydroxyl radicals. Phytic acid, known as a heavy metal-chelate agent, was highly concentrated in the stem. The Chuncheon buckwheat extract had $10\%$ protective effect against the treatment of $50{\mu}M$ cadmium at which $50\%$ of HaCaT cells survived. Confocal laser scanning microscope revealed the intracellular generation of reactive oxygen species (ROS) by cadmium treatment. Finally, we identified that the stem extract had the most protective effect on the elimination of ROS.

본 연구에서는 춘천 지역에서 재배되고 있는 메밀의 부위별(종피, 종자, 줄기) 추출물을 이용하여 MTT assay 항산화 효능(수퍼옥사이드 라디칼, 하이드록실 라디칼 소거능), rutin과 phytic acid에 대한 함량 측정, 대표적인 중금속 중의 하나인 카드뮴에 대한 세포 수준에서 방어 효능을 평가하였고, 이들 자료를 토대로 주된 식품재료로 쓰이고 있는 메밀을 기능성 화장품의 소재로써 개발할 수 있는 가능성을 조사하여 보았다. HaCaT 세포와 B16F10 세포를 이용한 세포 독성 실험에서는 각 추출물 $100 {\mu}g/mL$의 농도 범위에서는 독성이 없는 것으로 나타났다. 수퍼옥사이드 라디칼에 대한 소거능은 종피>줄기>종자 추출물 순이었으며, 종피나 줄기는 거의 비슷한 수준의 효능을 보여 주었으며, 항산화 효능에 관여하는 주요 물질중의 하나인 rutin은 줄기 부위에 가장 많이 함유하고 있었다. 하이드록실 라디칼에 대한 소거능은 각 추출물 모두 거의 없는 것을 확인할 수 있었다. 중금속에 대한 chelate 물질로 알려진 phytic acid는 rutin처럼 줄기 부위에 높은 농도로 함유되어 있었다. 카드뮴에 대한 독성은 HaCaT 세포에서 $50{\mu}M$의 농도일 때 $50\%$ 정도의 치사율을 보였으며, 카드뮴을 추출물과 같이 처리하였을 때는 카드뮴의 독성에 대해 약 $10\%$ 정도 방어 효과를 나타냈다. Confocal laser scanning microscope를 이용하여 카드뮴에 의한 세포내 활성산소종의 생성을 확인하였고. 생성된 활성 산소 종에 대한 방어 효능은 줄기추출물에서 가장 우수한 것을 확인하였다.

Keywords

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