Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Chemical Components and Physiological Activities of Bamboo (Phyllostachys bambusoides Starf) Extracts Prepared with Different Methods

추출방법에 따른 대나무(왕대) 추출물의 화학성분 및 생리활성

  • Ju, In-Ok (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Jung, Gi-Tai (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Ryu, Jeong (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Choi, Joung-Sik (Jeollabuk-do Agricultural Research and Extension Services) ;
  • Choi, Yeong-Geun (Jeollabuk-do Agricultural Research and Extension Services)
  • Published : 2005.08.31
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Abstract

Chemical components and physiological activities Bamboo (Phyllostachys bambusoides Starf) extracts obtained by burning, dry heating or extracting with water or 70% ethanol and were investigated. Contents of soluble solid and total phenolic compounds were highest in the ethanol extract. Contents of polyphenols such as catechin, chlorogenic acid, caffeic acid, 3-hydroxy benzoic acid and ferulic acid were determined. Free sugars consisted of galactose, glucose, fructose, and sucrose. Organic acids including citric, tartaric, malic, succinic, and acetic acid were present in the bamboo extracts. Antioxidant activities of dry heat and ethanol extracts were higher than those of BHA or ${\delta}-tocopherol$. Nitrite- scavenging effect of extracts ranged from 84.7 to 99.6% at pH 1.2 ana 3.0. Tyrosinase-inhibitory activity was higher in the water extract, and SOD-like and ACE-inhibitory activity were highest in tile dry kent extract. Antimicrobial activities of the bamboo extracts were strong against Bacillus subtilis, Escherichia coli O157, and Staphylococcus aureus.

대나루(왕대)를 여러 가지 방법으로 추출하고 그 추출액의 화학 성분을 분석하였다. 대나무 추출액의 pH는 5.0-5.5였고, 가용성고형분과 총페놀 함량은 알코올 추출액이 각각 $13.7^{\circ}Brix$와 0.42%로 가장 높았으며, 증발잔사는 직접가열 추출액이 3.8%로 가장 높았다. 무기성분은 K이 가장 높은 함량을 보였으며, 추출방법에 따라서는 간접가열이 가장 높은 무기물 함량을 나타내었다. 중금속은 Al, Cr, Cu, Mn, Ni, Pb, Zn, 등이 검출되었으며, 유해중금속 중 As, Cd, Hg는 검출되지 않았고 Cr, Pb는 극미량 검출되었다. 폴리페놀은 catechin, chlorogenic acid, caffeic acid, 3-hydroxy benzoic acid, ferulic acid등 5종이 확인되었으며 이중 3-hydroxy benzoic acid와 catechin이 주종을 이루는 것으로 나타났다. 유리당은 galactose, glucose, fructose 및 sucrose가 검출되었으며 glucose와 sucrose의 함량이 가장 높았다. 유기산은 citric acid, tartaric acid, malic acid, succinic acid, acetic acid 등이 검출되었으나 직접가열 추출액은 tartaric acid가, 물 추출액과 알코올 추출액은 citric acid, tartaric acid 및 succinic acid가 검출되지 않았다. 항산화 활성은 간접가열 추출액과 알코올 추출액이 상업용 항산화제인 BHA와 ${\delta}-tocopherol$ 보다 우수하였다. 아질산염소거능은 pH 1.2와 3.0에서 효과가 우수하였으나 pH 6.0에서는 급격히 감소하였다. Tyrosinase 저해활성은 물 추출액이 가장 높았으며, SOD 유사활성과 ACE 저해활성은 간접가열 추출액이 가장 높았다. 식품 부패균에 대한 항균활성은 Bacillus subtilis, E. coli O157, Staphylococcus aureus에 대하여 높은 것으로 나타났다.

Keywords

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