Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Kimchi Quality Affected by the Addition of Grapefruit Seed Extract Powder

자몽종자추출물 분말제재를 첨가한 김치의 저장성 연장

  • 박우포 (마산대학 식품과학계열) ;
  • 장덕규 (마산대학 식품과학계열)
  • Published : 2003.09.01
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Abstract

Grapefruit seed extract powder (GFSEP), which was made with grapefruit seed extract and calcium carbonate, was investigated to retard the fermentation rate. The mixing ratios of GFSEP to salted Chinese cabbage were 0.1, 0.3 and 0.5％. Quality characteristics of kimchi such as pH, titratable acidity, reducing sugar content and microbial loads were measured during fermentation at 10$^{\circ}C$. pH and reducing sugar content of control and kimchi sample with 0.1％ GFSEP showed decreases until 10 days, and then attained to stabilized levels. Kimchi samples with 0.3％ and 0.5％ GFSEP maintained a higher pH and reducing sugar content, while microbial load was lower than others. Based on the pH and tit ratable acidity, kimchi samples with GFSEP prolong the shelf life about 3～10 days.

GFSE 분말제재를 절인 배추에 대하여 0.1％, 0.3％ 및 0.5％씩 첨가하여 김치를 만들고 10％에서 숙성하면서 pH, 적정산도, 환원당 함량, 총균수, 젖산균수와 같은 품질 특성을 조사하였다. 숙성 기간이 경과함에 따라 김치의 pH는 감소하였는데, 대조구와 GFSE 분말제재 0.1％ 첨가구, 0.3％와 0.5％ 첨가구는 서로 비슷한 경향을 나타내었다. 대조구는 숙성 5일의 pH가 4.20으로 김치의 숙성 적기로 판단되는 범위에 도달하였는데, 0.5％ 첨가구는 숙성 30일까지 도달하지 않았고, 0.3％ 첨가구는 숙성 25일에 pH 4.19였다. 적정산도는 김치의 숙성 기간이 경과함에 따라 계속 증가하였으며, 시험구간의 변화 경향은 pH와 유사하였다. 환원당 함량은 김치의 숙성과 더불어 감소하였으며, 대조구와 GFSE 분말 제재 0.1％ 첨가구는 숙성 10일까지 급격히 감소하였고 그 이후에는 큰 변화를 나타내지 않았다. GFSE 분말제재 0.3％, 0.5％ 첨가구의 환원당 함량 감소는 비교적 완만하였으며, 숙성 전 기간에 걸쳐서 감소하였다. GFSE 분말제재는 김치의 담금 직후 총균수와 젖산균수를 낮추는 작용을 하였으며, 숙성 기간 중에도 젖산균의 증식을 억제하였다. 특히 GFSE 분말 제재 0.5％ 첨가구는 숙성 20일 이후에 젖산균수가 급격하게 줄어들었고, 30일에는 다른 시험구보다 2log(CFU/mL) 이하 낮았다.

Keywords

References

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