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Effects on the Quality Characteristics of Mul-kimchi with Omija (Schizandra chinensis Baillon) Water Extract

오미자 물 추출물을 이용한 물김치의 품질특성

  • Jeong, Tae-Seong (Dept. Food Science and Technology, Catholic University of Daegu) ;
  • Jeong, Eun-Ju (Dept. Food Science and Technology, Catholic University of Daegu) ;
  • Lee, Shin-Ho (Dept. Food Science and Technology, Catholic University of Daegu)
  • 정태성 (대구가톨릭대학교 외식식품산업학부 식품가공) ;
  • 정은주 (대구가톨릭대학교 외식식품산업학부 식품가공) ;
  • 이신호 (대구가톨릭대학교 외식식품산업학부 식품가공)
  • Published : 2008.10.31

Abstract

The physiological and microbiological characteristics of various mul-kimchis prepared with omija (Schiznadra chinensis) water extract (1, 2, 3 v/w%) (omija mul-kimchi ) or water (control) were investigated during fermentation for 21 days at $10^{\circ}C$. The pH of omija mul-kimchi was lower than that of control and lowered with increasing the concentration of omija between 1% and 3%. The pH did not change significantly during fermentation in omija mul-kimchi compared with control. The changes in titratable acidity were similar in pH. The change of total microbs and lactic bacteria during fermentation was similar in various mul-kimchis and the viable cell numbers in omija mul-kimchi were lower than in control. The viable cell of mul-kimchi decreased with increasing the concentration of omija water extract. The texture of various mul-kimchi such as hardness, cohesiveness, chewiness and springiness, was decreased but the texture of 1% omija mul-kimchi was maintained significantly higher than that of control during fermentation. The DPPH radical and nitrite scavenging activity of omija mul-kimchi were higher than those of control and the activities increased with increasing concentrations of omija water extract. The sensory quality of 1% omija mul-kimchi showed the highest value in taste and overall acceptability among the tested mul-kimchis.

건 오미자 1%, 2%, 3% 첨가하여 침출시킨 오미자 물 추출물을 담금 용수로 하여 물김치를 제조하여 발효 중 이화학적 미생물학적 특성을 대조구와 비교하였다. pH는 초기 대조구 6.53, 오미자 물김치의 농도별 pH는 각각 3,63, 3.29, 3.17이었으며, 발효가 진행됨에 따라 대조구는 낮아지고 오미자 물김치는 다소 높아졌다. 물김치의 산도 변화는 pH와 유사한 경향을 나타내었다. 발효 과정 중 총 균수와 젖산균수의 변화는 유사하였으며, 오미자 물김치에서 대조구에 비해 생균수는 적었으며, 오미자 농도가 증가함에 따라 생균수는 감소하였다. 조직감은 발효 기간 동안 경도, 씹힘성, 응집성, 탄력성이 감소하였으며, 1% 오미자 물김치의 경우 대조구에 비해 유의적으로 높은 값을 유지하였다. 오미자 물 추출물로 담근 물김치는 전자공여능은 오미자 추출물의 농도가 증가함에 따라 증가하였으며, 3% 오미자 물김치가 62.7%로 가장 높았다. 아질산염 소거능 역시 오미자 추출물의 농도가 증가함에 따라 증가하였으며, 숙성 12일째 가장 높은 소거능을 나타내었다. 기호성 검토결과, 맛과 종합적 기호도에서 1% 오미자 물 추출물로 담금 김치가 가장 우수하였다.

Keywords

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