포도품종을 달리한 적포도주의 이화학적 성분변화 (I)

The Chemical Characteristics of Korean Red Wine with Different Grape Varieties

  • 이장은 (가톨릭대학교 식품영양학과) ;
  • 원유동 (안성시농업기술센터) ;
  • 김성수 (한국식품개발연구원) ;
  • 고경희 (가톨릭대학교 식품영양학과)
  • Lee, Jang-Eun (Department of Food Science and Nutrition, The Catholic University of Korea) ;
  • Won, Yoo-Dong (An seong-si Agricultural Development and Technology Center) ;
  • Kim, Sung-Soo (Korea Food Research Institute) ;
  • Koh, Kyung-Hee (Department of Food Science and Nutrition, The Catholic University of Korea)
  • 발행 : 2002.04.01

초록

국내산 포도품종을 이용하여 5가지 포도주 G(거봉 100%), M(머루 100%), C(캠벨 100%), GM(거봉 70%+캠벨 30%), GC(거봉 70%+캠벨 30%)를 제조하여, 발효 과정 및 저장 중 포도주의 이화학성분 및 효모 생균수의 변화를 분석하였다. 발효과정 중 pH의 변화는 $3.21{\sim}3.6$ 사이의 값을 보였으며 총산도는 $3.2{\sim}4.6g/L$, 당도는 $17.9{\sim}6.0^{\circ}brix$를 나타내었다. 효모 생균수의 변화는 초기 $6.0{\times}10^6\;cfu/mL$, 발효가 최고에 이르렀을 때 $1.0{\times}10^8\;cfu/mL$, 발효 후기에 $7.0{\times}10^5\;cfu/mL$를 보였다. 알콜 발효 중 포도당과 과당 함량은 급격히 감소하여 발효가 끝난 후에는 0.2g/L의 함량을 보였다. 발효가 끝난 후 알코올은 $11.4{\sim}12.3%(v/v)$의 함량을 보였으며, 당도는 $6.0{\sim}6.5^{\circ}Brix,\; SO_2$ 함량은 $40{\sim}62\;mg/L$를 가졌다. 발효 중 말로-락틱 발효에 의해 사과산은 감소하였고, 젖산은 증가하여, 각각 G는 23%, M은 67%, C는 28%, GM는 33%, GC는 39%의 전환율을 보였다. pH, 총산도, $SO_2$, 젖산 함량은 각 품종간 유의적 차이를 보였다(p<0.05).

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