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Effect of Extracting Conditions on Chemical Compositions of Korean Mountain Ginseng Extract

추출조건이 장뇌삼추출물의 화학성분 조성에 미치는 영향

  • Kim, Jun-Han (Dept. of Food Science and Nutrition, Sangju National University) ;
  • Kim, Jong-Kuk (Dept. of Food Science and Nutrition, Sangju National University)
  • 김준한 (상주대학교 식품영양학과) ;
  • 김종국 (상주대학교 식품영양학과)
  • Published : 2005.07.01

Abstract

Korean mountain ginseng roots were freeze-dried at $-70^{\circ}C$ and extracted by different extracting solution conditions to investigate chemical compositions of extracts. The soluble solid content of the extract from $7.04\~13.45\%\;and\;50\%$ EtOH and MeOH extracts were higher than those of other extracts. $100\%\;water\;and\;90\%$ EtOH extracts gave the highest Brix with $19.98\%$\;and\;19.65\%$, respectively. pH of the extracts were ranged from $5.82\~6.60$. Browning color at 470 nm of the extract were high value in 50$\%$ EtOH extract. In case of Hunter's color value, L value of extract was higher in $100\%$ water extract (21.28) than EtOH extract $(17.18\~21.02)$, a and b values of extract were the highest in $100\%$ water (-0.12) and $90\%$ MeOH extract (1.34). The contents of free sugars in the EtOH extract were increased with the ethanol concentration. Sucrose contents of $90\%$ EtOH and MeOH extracts were 6,159 mg/100 g and 5,238 mg/100 g. Major organic acids of the extract were citric and malic acids. Major free amino acids of the extract were L-arginine, L-proline, $\gamma$ -amino-n-butyric acid, alanine and aspartic acid. The highest ginsenoside content was shown to be about $10.50\%\;in\;90\%$ MeOH extract. Major minerals of extract were P, K, Na, Mg and Ca.

국내산 장뇌삼을 $-70^{\circ}C$쉐서 동결건조 분말시료에 대한 추출용매와 농도에 따른 화학성분을 분석, 비교하였다. 장뇌삼추출액의 고형분함량은 $50\%$ 에탄올추출액과 메탄올추출액이 $11.16\%$$13.45\%$로 가장 높은 함량을 보였다. 당도는 $90\%$ 에탄올추출액과 $100\%$ 증류수추출액이 각각 $19.98\%$$19.65\%$로 가장 높았고, pH는 $5.82\~6.60$수준이었고, 갈색도는 흡광도가 $50\%$ 에탄올추출액이 1.458로 가장 높은 값을 나타내었다 색도의 경우 L값은 $100\%$ 증류수추출액이 21.28로 에탄올추출액 $17.18\~21.02$보다 높은 값을 나타내었고, a값은 $100\%$ 증류수추출액이 -0.12로 가장 높은 수준이었고, b값은 $90\%$ 메탄올추출액이 1.34로 가장 높은 수준이었다 유리당 함량은 에탄을 농도가 높을수록 함량이 높게 나타나 $90\%$ 에탄올추출액은 6,159 mg/100 g으로 높은 함량을 나타내었다. 유리당 조성 중 가장 많은 함량을 차지 하는 sucrose는 에탄을 농도가 높아짐에 따라 매우 높은 증가 현상을 보였는데 $90\%$ 에탄올추출액과 메탄올추출액에서 6,159 mg/100 g과 5,238 mg/100 g으로 매우 높은 함유량을 나타내었다 유기산 조성은 citric acid와 malic acid가 주된 유기산이었다. 주요유리아미노산으로는 arginine, proline, $\gamma$ -amino-n-butyric acid, alanine 및 aspartic acid가 매우 높은 함량을 보였다. 총사포닌 함량은 $90\%$ 메탄올추출액에 $10.50\%$로 높은 함유량을 나타내었으며, P, K, Na, Mg 및 Ca 등이 주된 무기질로 확인되었다.

Keywords

References

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