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울금(Curcuma longa L.)의 용매 별 추출물이 생리활성 및 산화억제에 미치는 영향

Effects of the Physiological Activities and Oxidation Inhibitory Action of Turmeric (Curcuma longa L.) by Various Solvents

  • Oh, Da-Young (Department of Food Science and Technology, Pusan National University) ;
  • Kim, Han-Soo (Department of Food Science and Technology, Pusan National University)
  • 투고 : 2018.06.25
  • 심사 : 2018.09.20
  • 발행 : 2018.09.30

초록

울금(Curcuma longa L.)의 사포닌 함량과, 증류수(distilled water, DW), 70% 에탄올 및 노르말 부탄올의 3가지 용매를 사용하여 산화억제 효과를 통한 기능성 식품 소재로서의 가치를 확인한 결과, 총 사포닌 함량은 $7.506{\pm}0.349mg\;SE/g$ dry weight으로 확인되었다. 추출 수율은 DW (17.11%), 70% 에탄올(15.26%), 노르말 부탄올(4.12%)로 DW에서 가장 높게 나타났으며, 노르말 부탄올 추출물에서 낮은 수율을 보였다. 항산화 활성은 농도가 높아질수록 활성이 증가되는 것으로 관찰되었다. 총 페놀 함량은 DW, 70% 에탄올, 노르말 부탄올 순으로 각각 8.57, 41.01, 119.11 mg GAE/g의 함량으로 나타났으며, 노르말 부탄올 추출물에서 유의적인 차이를 보이며 높게 관찰되었다(p<0.05). DPPH 라디칼 소거활성은 DW, 70% 에탄올, 노르말 부탄올 순으로 확인되었다. ABTS 라디칼 소거활성, 환원력 및 ferric reducing antioxidant power (FRAP) 또한 DPPH 라디칼 소거활성과 비슷한 양상으로 나타났지만, ferrous ion 킬레이트 능은 노르말 부탄올(15.87~21.17%), 70% 에탄올(26.10~50.76%), DW(44.47~84.24%) 순으로 측정되었다. 이에, 울금은 산화억제 및 생리활성을 가지는 것으로 규명되었으며 기능성 식품 소재로서의 활용 가능성이 높은 것으로 사료된다.

The aim of the present study was to evaluate of turmeric (Curcuma longa L.) on the physiological activities and oxidation inhibitory action. The effects of various solvents (distilled water DW, 70% ethanol and n-butanol) on the total phenolics content (TPC) of turmeric and their corresponding biological activity were studied. Bioactive compound of total saponin $7.506{\pm}0.349mg\;SE/g$ dry weight. Turmeric extracts yield were DW (17.11%), 70% ethanol (15.26%) and n-butanol (4.12%), respectively. Oxidation inhibitory action of the samples exhibited a dose-dependent increase. However, in the current study, none of the samples evaluated showed activity as strong as the BHA, ascorbic acid and EDTA. Results showed that extraction solvent had significant effects on TPC and oxidation inhibitory action (DPPH radical scavenging activity, ABTS radical scavenging activity, reducing power and ferric reducing antioxidant power) of n-butanol. Turmeric exhibited the antioxidant properties, which suggests that the plant material could be used for further studies as a potential source for bioactive and natural antioxidant.

키워드

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