Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Volatile Flavor Components In a Mixed Tea of Pueraria Radix and Green Tea

녹차와 갈근을 혼합한 차의 휘발성 향기성분

  • Received : 2009.11.23
  • Accepted : 2010.01.08
  • Published : 2010.03.30
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Abstract

This study was carried out in order to characterize the flavor of Pueraria radix-green tea. To make a new tea with good flavor and functional properties, Pueraria radix was mixed with green tea. Volatile flavor compounds of Pueraria radix-green tea were extracted by simultaneous distillations and extraction methods using a Likens and Nickerson's extraction apparatus. The concentrated extract was analyzed and identified by GC and GC-MS. Forty-nine compounds including $\beta$-selinene, $\beta$-caryophyllene, hexanal and nonanal were isolated and identified from Pueraria radix. Sixty-four compounds including nerolidol, linalool, linalool oxide and phenylethyl alcohol were isolated and identified from green tea. Eighty-two compounds including linalool, $\delta$-cadinene, limonene, $\beta$-caryophyllene and $\beta$-ionone were isolated and identified from Pueraria radix-green tea.

다양한 생리활성을 갖는 것으로 알려진 갈근을 중급 정도의 녹차와 혼합하여 갈근녹차를 제조하고 기호도와 관련이 있는 휘발성성분을 동시증류추출법에 의해 추출하여 GC 및 GC-MS로 분석, 동정하고 비교하였다. 갈근과 녹차를 1:1로 혼합한 갈근녹차의 향기성분으로 총 82종류를 동정하였다. 갈근녹차에는 갈근의 향기성분 18종류와 녹차의 향기성분 33종류 및 공통으로 포함된 31종류의 화합물들로 구성되어 있었다. 녹차의 향기성분으로 linalool, $\alpha$-ionone 및 nerolidol 등의 꽃향과 safranal, methyl butanal 등의 달콤한 향이 대부분을 차지하였다. 갈근의 향기성분으로 hexanal, trans-2-nonenal 및 $\beta$-selinene 등의 풋풋한 향과 decanal, limonene 등의 달콤한 향이 대부분을 차지하였다. 갈근녹차의 향기성분은 녹차의 향기성분인 달콤한 향을 띄는 furan류와 꽃향이나 산뜻한 과일 향을 띄는 linalool, nerolidol, 구수한 향을 띄는 pyrazine류와 pyrrole류에 갈근특유의 향기성분인 terpene계 화합물과 풋풋한 향을 띄는 trans-2-nonenal 및 $\beta$-selinene 등이 혼합되어 나타났다.

Keywords

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