가열에 의한 김치의 pH, 관능성 및 휘발성냄새성분의 변화

Changes in pH, Sensory Properties and Volatile Odor Components of Kimchi by Heating

  • 고영태 (덕성여자대학교 식품영양학과) ;
  • 백인희 (덕성여자대학교 식품영양학과)
  • Ko, Young-Tae (Department of Foods and Nutrition, Duksung Women's University) ;
  • Baik, In-Hee (Department of Foods and Nutrition, Duksung Women's University)
  • 발행 : 2002.12.01

초록

김치를 $25^{\circ}C$에서 4일간 숙성시킨 후, pH와 관능성을 관찰하고 몇가지 주요한 휘발성냄새성분의 변화를 관찰하였다. pH는 가열에 의하여 거의 변화가 없었다. 전반적인 기호도는 가열된 시료, 특히 40분 가열시료의 기호도수치가 높았으며 3시료 사이에 유의적인 차이를 보였다(p<0.05). 산미, 맛, 냄새, 조직감의 경우도 전반적인 기호도와 유사한 경향을 보였으나, 형태의 경우는 3시료 사이에 차이가 없었다. 휘발성 냄새성분의 결과를 보면 reference(비가열시료)는 allyl mercaptan, methyl allyl sulfide, dimethyl disulfide, diallyl sulfide, diallyl disulfide와 같은 5종의 황함유성분과 ethanol이 검출되었는데, $100^{\circ}C/10$분시료는 ethanol과 methyl allyl sulfide만 검출되고 그 함량도 reference에 비하여 현저하게 감소하였으며, $100^{\circ}C/40$분 시료는 $100^{\circ}C/10$분 시료와 비교하여 ethanol의 함량은 현저히 감소하고 methyl allyl sulfide의 함량은 거의 변화가 없었다.

Kimchi was ripened at $25^{\circ}C$ for 4 days and heated at $100^{\circ}C$ for 10 or 40 min. pH of the ripened kimchi was not changed by heating, whereas sensory properties of kimchi, including overall acceptability, acidity, taste, odor, and texture, were improved, particularly by $100^{\circ}C/40$ min-heating. Allyl mercaptan, methyl allyl sulfide, dimethyl disulfide, diallyl sulfide, diallyl disulfide, and ethanol were detected in the ripened kimchi. Volatile odor components except ethanol and methyl allyl sulfide were removed by heating at $100^{\circ}C/10$ min, and the ethanol content was further reduced by heating at $100^{\circ}C/40$ min.

키워드

참고문헌

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