Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Antioxidant and Antiproliferative Activity of Pepper (Capsicum annuum L.) Leaves

고추잎 추출물의 항산화 및 암세포 증식 억제 효과

  • Jeon, Geon-Uk (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Han, Ji-Young (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Choi, Young-Min (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Lee, Seon-Mi (Dept. of Food Science and Technology, Chungbuk National University) ;
  • Kim, Heung-Tae (Dept. of Plant Medicine, Chungbuk National University) ;
  • Lee, Jun-Soo (Dept. of Food Science and Technology, Chungbuk National University)
  • Published : 2008.08.30
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Abstract

The purposes of this study were aimed to evaluate the antioxidant and antiproliferative activities of water, methanol, and 70% acetone extracts from pepper leaves. The antioxidant activity was evaluated by ABTS and DPPH radical scavenging activities, reducing power, and chelating effect. Moreover, the effects of the extracts on cell proliferation of breast (MCF7), colon (HCT116), and gastric (MKN45) tumor cells were investigated. Higher extraction yields were obtained with methanol than with 70% acetone and water. Among the three different solvents, 70% acetone extract showed the highest polyphenolic contents. 70% acetone extracts showed higher antioxidant activities compared with other extracts. Also, 70% acetone extract of pepper leaves exhibited higher antiproliferative activity (>80%) against HCT116 and MKN45 cells compared with other samples at the concentration of 1 mg/mL. These results indicate that pepper leaves may serve as potential dietary sources of natural antioxidants and antiproliferative substances.

본 연구에서는 고추잎 추출물에 대한 항산화 활성과 암세포 증식억제 활성을 분석하고 각 추출물에 따른 차이를 비교 분석하고자 하였다. 추출물의 항산화력은 ABTS와 DPPH 라디칼 제거능, 환원력 및 금속이온 제거능을 이용하여 평가하였으며 암세포 증식 억제능은 유방암, 대장암 및 위암 세포주를 이용하였다. 각 추출물 중 70% acetone 추출물의 경우 polyphenol 함량(56.6 mg GAE/g residue)과 총 항산화력(450.8 mM TEAC/g residue), DPPH 라디칼 제거능(230.3 mM TEAC/g residue), 환원력(0.5 A700) 측정에서 모두 가장 높은 수치를 나타내었다. 또한 암세포 증식억제활성 측정 결과 대장암세포(HCT116)에서는 70% acetone 추출물이 1 mg/mL의 농도에서 96.2%의 증식억제 활성을 나타냈고 유방암세포(MCF7)에서는 methanol 추출물이 78.4%의 활성을 나타냈으며, 위암세포(MKN45)에서는 water 추출물이 89.7%의 활성을 나타내었다. 본 연구결과는 점차 관심이 높아지고 있는 천연 항산화 항암제로서의 고추잎에 대한 활성연구에 있어 기초자료가 될 것으로 예상되며, 주산물인 고추열매에 비해 그 활용도가 극히 적은 고추잎에 대한 소비촉진에 영향을 끼칠 것으로 기대된다.

Keywords

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