Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Antioxidant and anticancer properties of hot water and ethanol extracts from the roots of Smilax china L.

발계(Smilax china L.) 열수 및 에탄올 추출물의 항산화 및 항암활성

  • Kim, Ye Jin (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Son, Dae-Yeul (Department of Herbal Food Science, Daegu Haany University)
  • 김예진 (경북대학교 식품영양학과) ;
  • 손대열 (대구한의대학교 한방식품약리학과)
  • Received : 2013.07.02
  • Accepted : 2013.09.13
  • Published : 2013.10.30
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Abstract

The biological activities of Smilax china L. rhizome (SCR), hot water (SCRW) and 70% ethanol extract (SCRE) were analyzed. The total phenolic contents of SCRW and SCRE were 51.7 and 100.5 mg/g, respectively. The measured flavonoid content of SCRW ($67.7{\mu}g/g$) was almost double that of SCRE ($31.7{\mu}g/g$). SCRE ($IC_{50}=42.4{\mu}g/mL$) exhibited stronger antioxidant activity in the DPPH system than the positive control ${\alpha}$-tocopherol ($71.3{\mu}g/mL$) or butylated hydroxy anisole ($53.8{\mu}g/mL$) did. SCRE ($IC_{50}=50.3{\mu}g/mL$) also showed stronger ABTS radical scavenging activity, as did ${\alpha}$-tocopherol ($67.1{\mu}g/mL$). The SOD-like activity and Tyrosinase inhibition activity of SCRW and SCRE showed almost the same pattern. The best SOD-like activity and tyrosinase inhibition activity were measured as 24.9% and 20.3% in SCRW at $1,000{\mu}g/mL$, respectively. The cytotoxic effects of the SCR extracts were analyzed via MTT assay on human cancer and normal cells. SCRW and SCRE did not show cytotoxicity up to the concentration of $1,000{\mu}g/mL$ against the normal human cell line HEK293. Against human breast cancer cells (MCF-7), SCRW inhibited MCF-7 growth (by 27.6%) better than the anticancer drug cyclophosphamide (15.5%) at $1,000{\mu}g/mL$. SCRE ($1,000{\mu}g/mL$) inhibited the growth of human lung cancer cells A549 (37.6%) and human stomach cancer cells AGS (53.6%) more effective than did SCRW (21.0% and 35.4%) or CPA (22.2% and 31.7%). These results suggest the potential use of SCRE and SCRW as an excellent antioxidant and antiproliferative substance, respectively.

식품 연구에서 흔히 사용되는 물과 주정(70% 에탄올)을 사용하여 추출된 발계(SCR)의 열수 추출물(SCRW)과 에탄올 추출물(SCRW)의 총 플라보노이드 및 폴리페놀 함량, 항산화 활성, 항암활성을 측정하였다. SCRW와 SCRE는 DPPH(SCRW; 72.9%, SCRE; 42.4%)와 ABTS(SCRW; 81.6%, SCRE; 50.3%) 자유 라디칼을 효과적으로 소거하였으며, 양성 대조군인 BHA(53.8% DPPH, 49.5% ABTS)보다 더 높은 소거활성을 나타냈다. 또한 인체 유래 신장 정상세포(HEK293)에 대해서는 높은 생존율을 나타내 독성이 없음을 확인한 반면, 인체 유래의 암세포(유방암세포; MCF-7, 폐암세포; A549, 위암세포; AGS)에 대해서는 대조군으로 사용된 항암제 CPA와 유사하거나 더 높은 세포성장 억제효과가 확인되었다. 특히 SCRE는 AGS에 대하여 $1,000{\mu}g/mL$ 농도에서 53.6%로 탁월한 위암 세포 성장저해 효과를 나타냈다. 본 연구 결과를 통해, 발계 추출물의 높은 항산화 및 항암 활성이 확인되어 약리활성에 대한 기초연구 자료로 제시 할 수 있을 것으로 사료되며, 기능성 소재로써의 이용 가치를 높일 수 있을 것으로 판단된다.

Keywords

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