Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality Changes in Baik-Kimchi (Pickled Cabbage) Added Lotus Root Juice during Fermentation

연근 즙을 첨가한 백김치의 숙성 중 품질 변화

  • 박복희 (목포대학교 생활과학부 식품영양학과) ;
  • 최선희 (목포대학교 생활과학부 식품영양학과) ;
  • 조희숙 (목포대학교 생활과학부 식품영양학과) ;
  • 김성두 (주식회사 다연) ;
  • 전은례 (성화대학 식품영양학과)
  • Received : 2010.02.03
  • Accepted : 2010.06.11
  • Published : 2010.06.30
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Abstract

The physicochemical and sensory properties of Baik-Kimchi supplemented with Lotus root juice were periodically examined during fermentation at $5^{\circ}C$ over 4 weeks. The pH decreased and acidity gradually increased during fermentation. Turbidity also increased as the level of added Lotus root juice increased, with a gradual rise being evident over 2 weeks with a subsequent decrease to the 4-weekpoint of fermentation. The L- and a-values decreased as the amount of added Lotus root juice increased, whereas the b value increased. The reducing sugar content increased when Baik-Kimchi was supplemented with 3% or 6% (both w/v) Lotus root juice, but decreased when Baik-Kimchi was supplemented with 9% or 12% (both w/v) root juice. Reducing sugar content decreased as fermentation continued. The vitamin C content was higher in supplemented samples, than in the control during fermentation. The hardness of Baik-Kimchi supplemented with Lotus root juice decreased with increasing fermentation time. By sensory evaluation, addition of 6%(w/v) root juice yielded a product superior in color, smell, crispness, and overall acceptability compared with control. In conclusion, optimal Baik-Kimchi fermentation should include addition of 6% (w/v) Lotus root juice.

연근즙 첨가수준에 따라 백김치를 제조한 후 $5^{\circ}C$에서 4주간 저장하면서 숙성 중의 이화학적, 관능적 특성을 조사하였다. 연근즙의 첨가수준이 증가할수록 pH는 감소, 산도는 반대로 증가하는 경향을 보였고 숙성기간 중에도 같은 경향을 보였다. 탁도는 첨가수준이 증가할수록 증가함을 볼 수 있었으며, 숙성 2주까지는 대조군의 비해 첨가군의 경우 탁도가 증가하는 경향을 보였으나 숙성 3주, 4주에서는 약간 더 감소하는 경향을 보였다. 색도 L 값과 a 값은 연근즙 첨가수준이 증가할수록 감소하였고, b 값은 증가하였다. 환원당은 연근즙 3%와 6% 첨가군의 경우 증가하였다가 연근즙 9%와 12% 첨가군의 경우 감소하는 경향을 보였다. 숙성기간에 따라서는 감소하는 경향을 볼 수 있었다. 비타민 C함량은 대조군보다 연근즙 첨가군의 경우 모든 숙성기간에서 더 높게 나타났다. 경도는 대조군보다는 모든 첨가군의 경우 약간 높은 값을 보였지만 첨가수준에 따른 일정한 경향은 보이지 않았다. 숙성기간에 따른 변화로는 숙성기간이 증가할수록 감소하는 경향을 보였다. 관능검사결과에서는 연근즙 6% 첨가군의 경우 색, 냄새, 아삭아삭한 정도 및 전체적인 기호도가 가장 높게 나타나 백김치에 연근즙의 첨가수준이 6%정도가 적절한 것으로 나타났다.

Keywords

References

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