Brewing and Functional Characteristics of Hongkuk Ju Prepared with Various Hongkuks

홍국주의 제조와 기능성에 관한 연구

  • Park, In-Bae (Department of Food Engineering, Mokpo National University) ;
  • Park, Bae-Sun (Department of Food Engineering, Mokpo National University) ;
  • Jung, Soon-Teck (Department of Food Engineering, Mokpo National University)
  • 박인배 (목포대학교 식품공학과) ;
  • 박배선 (목포대학교 식품공학과) ;
  • 정순택 (목포대학교 식품공학과)
  • Published : 2003.10.01

Abstract

To identify the functional properties of Hongkuk ju and to improve its brewing process, Hongkuk ju was brewed using different hongkuks (Monascus red koji) made by Monascus purpureus, Monascus anka, Monascus aruneosus, and nuruk. Hongkuk using M. purpureus showed the highest enzyme activity. Hongkuk ju prepared with the M. purpureus hongkuk was fermented most efficiently, and showed the highest Hunter value. Hongkuk ju showed significant levels of phenolic compounds, electron donating ability, nitrate-scavenging activity, and ACE inhibition activity. In particular, Hongkuk ju made with M. purpureus showed the highest value among the wines of this study.

홍국주의 제조방법을 재현하고 그의 기능성을 탐색하고자 Monascus purpureus, Monascus anka, Monascus araneosus의 홍국균으로 3종류의 쌀 홍국을 만들고 이를 이용하여 6종류의 홍국주를 제조하여 발효과정중의 성분변화를 분석하고 제조한 홍국주의 총 페놀 함량, 전자공여능에 의한 항산화 활성, 아질산염소거능, ACE 저해효과를 측정하여 생리적기능성을 서로 비교 검토하였다. 홍국주 제조용 홍국의 효소활성은 Monascus purpureus로 제조한 홍국이 모든 효소활성에서 다른 두 종류의 홍국보다 더 높았다. 발효 기간에 따른 홍국주의 pH는 pH $3.65{\sim}4.05$ 부근이었고 홍국의 종류와 사용량이 pH 변화에 큰 영향을 미치지 않았다. 총산의 변화는 $0.3{\sim}0.7%$ 부근으로 변화가 적었다. 환원당은 발효기간 중 계속 감소하여 누룩으로만 담금한 대조구의 경우 발효 10일 에 환원당의 함량이 1%로 낮아졌으나 홍국의 사용비율이 높을수록 발호속도가 빨라, 홍국과 누룩으로 담금한 경우는 8일, 홍국만으로 담금한 술덧은 발효 6일에 환원당의 함량이 1%정도가 되었다. 에칠 알코올은 발효 6일에 누룩으로만 담금한 대조구는 10.8%를, 홍국과 누룩으로 담금한 홍국주는 $12{\sim}12.5%$를, 홍국만으로 담금한 홍국주의 경우는 $12.8{\sim}13.3%$를 나타내 홍국의 함량이 높을수록 발효가 빠르게 진행되었으며 이중 Monascus purpureus 홍국만으로 담금한 홍국주가 알코올 생성능이 가장 좋았다. 홍국주의 적색도(a값)는 발효가 진행되는 동안 적색도는 전반적으로 증가하여 +16이 되었다. 홍국주의 총 페놀 함량은 Monascus purpureus 홍국만으로 제조한 것이 20.55 mg%로 가장 높았으며 Monascus araneosus 홍국과 누룩을 혼합하여 제조한 홍국주가 10.25 mg%로 가장 낮았다 전자공여능에 의한 항산화 활성은 $14.50{\sim}30.25%$를 나타내었으나 홍국첨가량이 증가할수록 항산화력은 뛰어났다. 아질산염 소거능은 누룩으로만 담금한 대조구의 경우 18.25%로 홍국의 첨가량이 증가함에 따라 소폭의 향상을 보여 $19.25{\sim}28.65%$이었다. 대조구의 ACE 저해활성은 20.55%이었고 홍국 사용량에 따라 활성이 증가하였으며 ACE 저해활성은 각각 $24.66{\sim}50.13%$로 홍국주의 제조방법에 따라 그 차이가 컸다.

Keywords

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