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Quality Characteristics of Got Mul-Kimchi during Storage by Type of Kimchi Containers Using Plastic Ark Shell

꼬막껍질을 이용한 김치 저장 용기의 종류별 저장 기간에 따른 갓 물김치의 품질 특성

  • Received : 2016.09.26
  • Accepted : 2016.11.17
  • Published : 2017.01.31

Abstract

This study was conducted to evaluate the quality characteristics of got mul-kimchi during storage by type of kimchi container using a plastic ark shell. The pH level, acidity, hardness, color, sensory evaluation, and microbiological activity were performed. Kimchi containers were prepared with 0%, 2%, and 3% plastic ark shell. The pH level of 2% container samples showed no significant difference compared with that of the control, whereas pH levels of 3% container samples were significantly (P<0.05) higher than those of the control and 2% sample. Acidity was not different among treatments up to 4 weeks, whereas acidity of 3% container samples was significantly (P<0.05) lower than those of the control and 2% samples after 8 weeks. Hardness significantly decreased (P<0.05) upon 0, 2, and 3% treatments with increasing storage time, but there was no significant difference among the treatments. Hunter color L values increased in the order of 0, 3, and 2% with increasing storage time. In sensory evaluation of crunchiness, 3% container samples had significantly (P<0.05) higher crunchiness than the control. Total viable cells in the 3% container with got mul-kimchi were significantly (P<0.05) lower than those of other samples at 12 and 16 weeks of fermentation. Numbers of lactic acid bacteria in the 2% and 3% container samples were significantly (P<0.05) lower than those of the control samples after 16 weeks of fermentation. These results show that the plastic ark shell kimchi container extended storage compared with the control.

본 연구는 갓 물김치를 제조한 후 꼬막껍질의 혼합비율을 달리하여 제조(0%, 2%, 3%)한 김치 용기에 갓 물김치를 넣고 김치냉장고에 5개월간 저장하면서 저장 기간에 따른 갓 물김치의 pH, 산도, 경도, 색도, 관능평가, 미생물 측정 등 품질 특성을 측정하였다. 갓 물김치의 pH는 제조 초기보다 저장 4주에 급격히 감소하였으며, 4주에서 12주까지는 pH가 조금씩 감소하였으나 12주부터는 거의 변화가 없었다. 또한, 저장 기간에 대조 시료와 2% 시료는 차이가 없는 것으로 나타났으며, 3% 시료는 대조 시료와 2% 시료보다 유의적으로 높았다. 산도의 경우 저장 8주부터 대조 시료와 2% 시료보다 3% 시료에서 유의적으로 낮게 나타났다. 경도의 경우 저장 기간별로 보면 모든 시료에서 제조 초기보다 저장 16주에 유의적으로 낮았으며, 감소폭은 3% 시료가 가장 적었으나 시료에 따른 유의적 차이는 없었다. 색도에서 명도는 저장 기간이 증가함에 따라 증가하였으며, 처리에 따른 비교에서 저장 마지막 20주에 대조 시료가 가장 높게 나타났고 다음으로 3%, 2% 순으로 나타났다. 적색도 역시 저장 기간이 길어질수록 증가하였으며, 8주까지는 3% 시료에서 유의적으로 감소하였으나 12주 후에는 처리에 따른 차이가 없었다. 황색도는 저장 기간이 길어질수록 증가하였으며, 저장 12주까지는 대조 시료가 2%와 3% 시료보다 유의적으로 감소하였으나 저장 16주부터는 처리에 따른 차이가 없었다. 관능평가에서는 맛, 신맛, 색, 냄새, 전반적 좋아함의 경우 처리에 따른 차이가 없었으나, 아삭함의 경우 3% 시료가 대조 시료보다 유의적으로 높게 나타나 가장 아삭한 것으로 나타났다. 총균수는 제조 초기부터 증가하기 시작하여 저장 12주에 최고로 증가하였다가 16주부터는 감소하기 시작하여 20주에는 거의 변화가 없었다. 저장 12주와 16주에는 3% 시료가 대조 시료와 2% 시료보다 유의적으로 낮게 나타났다. 유산균의 경우 전 저장 기간을 통하여 제조 초기부터 증가하기 시작하여 12주까지 계속 증가하다가 그 후에는 감소하였다. 처리별 차이는 저장 12주에 3% 시료가 대조와 2% 시료보다 유의적으로 낮게 나타났으며, 16주 이후는 대조 시료보다 2%와 3% 시료에서 유의적으로 낮게 나타났다. 본 연구의 결과로 볼 때 3% 김치 용기에 저장된 갓 물김치가 대조 시료와 2% 시료보다 숙성이 지연되는 현상을 나타냈음을 알 수 있었다.

Keywords

References

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