The Antimicrobial Activity against Helicobacter pylori and Antioxidant effect from the extracts of Mulberry leaves (Morus Alba L.)

품종이 다른 뽕잎추출물의 Helicobacter Pylori에 대한 항균활성 탐색과 항산화 효과

  • Cho, Young-Je (Department of Food Engineering, Sangju National University) ;
  • Ju, In-Sik (Department of Food Engineering, Sangju National University) ;
  • Kim, Byung-Oh (Department of Applied Biology, Sangju National University) ;
  • Kim, Jeung-Hoan (NIP Biotech.) ;
  • Lee, Byung-Gu (Department of Culinary & Bakery, Yuengnam Foreign Language College) ;
  • An, Bong-Jeun (Department of Cosmeceutical Science, Daegu Haany University) ;
  • Choo, Jae-Weon (Sericulture & Entomology Experiment Station, Gyeongbuk Agricultural Technology Administration)
  • 조영제 (상주대학교 식품공학과) ;
  • 주인식 (상주대학교 식품공학과) ;
  • 김병오 (상주대학교 생물응용학과) ;
  • 김정환 ;
  • 이병구 (영남외국어대학 호텔조리제빵과) ;
  • 안봉전 (대구한의대학교 화장품약리학과) ;
  • 추재원 (경상북도농업기술원 잠사곤충사업장)
  • Published : 2007.12.31

Abstract

The water extracts and 80% ethanol extracts from mulberry leaves of 108 kinds were tested their antimicrobial activities against Helicobacter pylori and antioxidant effects. The ABTS [2,2'-azino-bis(3-ethylbenzothiaznoline-6-sulfornic acid)] radical decolorization, electron donating ability (EDA), thiobarbituric acid reactive substance (TBARS) and antioxidant protection factor (PF) were determined for water extracts and 80% ethanol extracts from mulberry leaves. In the electron donating activity, the 13 kinds of water extracts showed high inhibition (>80%), whereas the 59 kinds of 80% ethanol extracts showed high inhibition. The inhibitory activities of water extracts from all kinds of mulberry leaves were higher than 90% in ABTS [2,2'-azinobis(3-ethylbenzothiaznoline-6-sulfornic acid)] radical decolorization. The thiobarbituric acid reactive substance (TBARS) and antioxidant protection factor (PF) of the 80% ethanol extracts were higher than that of water extracts. Antimicrobial activity against Helicobacter pylori showed high value in 80% ethanol extracts of 15 kinds mulberry leaves. The results implied that the mulberry leaves can be useful for natural antimicrobial medicine.

108종의 표본묘목으로부터 채취한 뽕나무잎을 이용하여 항산화효과와 Helicobacter pylort에 대한 억제효과를 측정하였다. 항산화효과 중 DPPH에 대한 전자공여능은 물 추출물에서는 양면상 등 13종의 뽕잎에서 80% 이상의 높은 전자공여능이 확인되었으며, 80% ethanol 추출물에서는 고수9 등 59종의 뽕잎에서 80% 이상의 높은 전자공여능이 확인되어, 물 추출물보다 상대적으로 높은 효과를 나타내었다. ABTS radical decolorlization을 측정한 결과 물 추출물과 80% ethanol 추출물 모두에서 대부분의 뽕잎 추출물들이 90% 이상의 높은 항산화 효과를 나타내었다. TBARS 값은 control값이 $0.493{\times}10^{-2}{\mu}M$로 나타났으며, 물 추출물에서는 청운뽕, 도내, 축무, 사천금, 수원상 1호, 불전 2호, 오노다마구와, 야마나까다까스께를 제외한 모든 품종에서 대조구보다 낮게 나타났으며, 80% ethanol 추출물에서도 대축면을 제외한 107종의 품종에서 대조구보다 낮은 TBARS 값을 나타내어 산화촉진인자를 binding하는 능력이 뛰어난 것으로 판단되었다. TBARS와 같이 지용성 물질의 항산화력을 나타내는 antioxidant protection factor(PF)에서는 많은 종류의 뽕잎 80% ethanol 추출물에서 2이상의 높은 PF를 나타내었으며, TBARS값과 PF값 모두 80% ethanol 추출물이 물 추출물보다 효과가 우수한 것으로 나타났다. 뽕잎 품종별 추출물로 Helicobacter pylori균을 저해하는 물질을 탐색한 결과 108종의 뽕잎 중에서 감락상, 다호조생, 신일뽕, 국상 27호, 개량십문자, 국부, 수중상, 백광 6호, 이상, 사천금, 영변추우, 사175, 당상 2호, 청목노상 및 수중상 등 15 품종의 뽕잎에서 저해환을 나타냈으며, 그 중 물 추출물에서는 다호조생 품종이 지름 13mm의 저해환을, 알코올 추출물에서는 청목노상 품종이 지름 15mm의 저해환으로 효과가 가장 우수하여 천연 항균제 및 생리활성 물질로의 이용가능성을 추측할 수 있었다.

Keywords

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