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Fermentation and Functional Properties of Korean Traditional Liquor, Hahyangju

하향주의 발효 및 기능적 특성

  • 박치덕 (대구신기술사업단 바이오산업지원센터) ;
  • 정희경 (대구신기술사업단 바이오산업지원센터) ;
  • 김대익 (대구신기술사업단 바이오산업지원센터) ;
  • 이인선 (대구신기술사업단 바이오산업지원센터) ;
  • 홍주헌 (대구신기술사업단 바이오산업지원센터)
  • Published : 2007.04.30

Abstract

This research was worked out to investigate fermentation and functional properties of Hahyangju. Hahyangju was brewed by traditional method and the changes in chemical component and microorganisms in wine mash were evaluated during brewing. In the course of the first mash brewing, the yeast cell number was the highest after 6 days fermentation, and contained 11% alcohol, 0.82% total acidity and 0.53% amino acidity The final product of Hahyangju contained 19.2% alcohol, 0.32% reducing sugar, 0.46% total acidity and 0.24% amino acidity. The major organic acid was lactic acid containing 680.04mg/100mL. The total phenolic compound contents and electron donating ability of Hahyangju were 263.16 ppm and 93.08%, respectively. Nitrate scavenging effect was measured at various PH (1.2, 3.0, 4.2, 6.0); the highest effect was at pH 1.2 as 90.26%. Angiotensin converting enzyme (ACE) inhibition activity and fibrinolytic activity of Hahyangju ware 87.5% and 19.1 unit, respectively.

전통적인 방법으로 제조한 하향주의 발효 및 기능적 특성을 조사하였다. 밑술 발효 기간 동안의 미생물과 이화학적 성분의 변화를 조사한 결과 발효 6일째 효모의 개체수가 $8.49{\times}10^7\;CFU/mL$로 가장 높게 나타났으며, 알코올 함량은 약 11%, 총산도 0.82%, 아미노산도 0.53%로 나타나 밑술의 최적 발효 기간은 6일임을 확인하였다. 덧술 담금 후 100일간 발효시킨 최종 하향주의 품질은 알코올 함량이 19.2%로 민속주로서는 다소 높게 나타났으며, 환원당 0.32%, 총산도 0.46%, 아미노산도가 0.24%이었다. 유기 산중 젖산균에 의해 생성된 lactic acid가 680.04 mg/100mL로 가장 높게 나타났으며, 아미노산은 proline이 47.51mg/100mL로 가장 많이 존재하였다. 하향주의 기능적 특성을 분석한 결과 총 폴리페놀 함량은 263.16 ppm이었고, 전자공여능은 93.08%로 나타났으며 아질산염 소거능은 다양한 PH(1.2, 3.0, 4.2, 6.0)에서 측정하였는데, pH 1.2에서 90.26%로 가장 높은 효과를 보였다. ACE 저해활성은 87.5%, 혈전용해 활성은 19.1unit로 분석되었다.

Keywords

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