Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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Effects of Deodeok Contents on the Qualities of Quick Fermented Doenjang Type Product

더덕을 첨가하여 속성시킨 된장형 제품의 품질에 미치는 영향

  • Hong, Seong-Cheol (Dept. of Food Processing and Distribution, College of Life Science, Gangneung-Wonju National University) ;
  • Choi, Ki-Soon (Dept. of Food Processing and Distribution, College of Life Science, Gangneung-Wonju National University) ;
  • Lee, Ho-Joon (Marketing and Distribution Research Group, Korea Food Research Institute) ;
  • Kwon, Dong-Jin (Dept. of Food Processing and Distribution, College of Life Science, Gangneung-Wonju National University)
  • 홍성철 (강릉원주대학교 생명과학대학 식품가공유통학과) ;
  • 최기순 (강릉원주대학교 생명과학대학 식품가공유통학과) ;
  • 이호준 (한국식품연구원 유통연구단) ;
  • 권동진 (강릉원주대학교 생명과학대학 식품가공유통학과)
  • Received : 2010.02.02
  • Accepted : 2010.03.08
  • Published : 2010.05.31
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Abstract

The qualities of Deodeok Doenjang including physicochemical characteristics and sensory properties were investigated over the following range of Deodeok levels: 5, 10, 15 and 20% (all w/w). The strains used in the manufacturing of Doenjang were Bacillus sp. B-3 and Aspergillus sp. M-9 with the highest enzyme activities like amylase and protease. In case of Deodeok Doenjangs prepared with Bacillus sp. B-3, the amino-type nitrogen of Doenjang containing 10% (w/w) Deodeok was produced more than others during fermentation for 40 days. Amino-type nitrogen produced in Deodeok Doenjang prepared with Aspergillus sp. M-9 was more than one of Deodeok Doenjangs with Bacillus sp. B-3 and a commercial Doenjang. When Deodeok content exceeded 15% (w/w), higher content resulted in lesser amino-type nitrogen production. The results showed that Deodeok had influenced growth of Bacillus sp. and Aspergillus sp. Sensory evaluation showed that Deodeok Doenjangs containing 10% (w/w) Deodeok and 1% (w/w) Bacillus sp. B-3 and containing 20% (w/w) Deodeok and 1% (w/w) Aspergillus sp. M-9 were superior to the other Doenjangs tested.

본 연구는 된장 제조에 더덕의 함량을 5, 10, 15 및 20% (w/w)로 달리하여 첨가 제조한 된장의 이화학적 및 관능검사 등의 품질에 미치는 영향을 조사하였다. 된장 제조에 사용한 균주는 재래식 메주에서 $\alpha$-amylase, $\beta$-amylase 및 산성 protease 활성이 우수한 것으로 선정된 Bacillus sp. B-3과 Aspergillus sp. M-9이다. Bacillus sp. B-3을 starter로 제조한 된장의 숙성 중 아미노태질소 함량을 조사한 결과 10%(w/w) 더덕 함유 된장이 다른 처리구에 비해 가장 많이 생성되고 있었다. 또한 Aspergillus sp. M-9를 starter로 제조한 된장의 경우 Bacillus sp. B-3로 제조한 된장과 시판재래식된장보다 월등히 많은 아미노태질소를 생성하고 있었다. 한편, 더덕 함량이 15%(w/w) 이상 함유된 더덕된장에서는 아미노태질소 함량이 감소하는 경향을 보여 더덕 함량이 된장 중의 Bacillus sp.와 Aspergillus sp.의 생육에 미치는 영향이 있는 것으로 나타났다. 숙성이 끝난 된장에 대한 관능검사에서는 Bacillus sp. B-3로 제조한 더덕된장의 경우 더덕 10%(w/w) 함유 된장이 가장 높은 점수를 얻었으며, Aspergillus sp. M-9로 제조한 더덕된장에서는 더덕 20% (w/w) 함유 된장이 가장 높은 점수를 얻었다. 시중에서 구입한 된장과 더덕된장을 비교한 결과, Bacillus sp. B-3 및 Aspergillus sp. M-9로 제조한 된장이 우수한 것으로 나타나 Bacillus sp. B-3로 제조할 경우 더덕 10%(w/w)을, Aspergillus sp. M-9로 제조할 경우는 더덕 20%(w/w)를 첨가하는 것이 기호도 측면에서 우수한 것으로 나타났다.

Keywords

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