Journal of the Korean Society of Food Science and Nutrition (한국식품영양과학회지)

The Korean Society of Food Science and Nutrition (한국식품영양과학회)
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The Changes of Ascorbic Acid and Chlorophylls Content in Gochu-jangachi during Fermentation

고추장아찌 숙성 중 아스코르브산 및 클로로필의 함량 변화

  • 정숙자 (경상대학교 식품영양학과) ;
  • 김경업 (경상대학교 식품영양학과) ;
  • 김성희 (경상대학교 식품영양학과)
  • Published : 2001.10.01
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Abstract

This study was carried out to investigate changes in salinity, pH, ascorbic acid, chlorophyll and its derivatives of the different gochu-jangachi (unripe hot pepper preserved in soybean paste and soy sauce). As the fermentation proceeded, the salinity of these samples stored at 15$^{\circ}C$ was higher than that stored at 5$^{\circ}C$. The pH of samples was slowly lowered and little different during the fermentation at 5$^{\circ}C$. In the during fermentation at 15$^{\circ}C$, the pH of gochu-jangachi with soybean paste was maintained over 5 until 60 days and that of gochu-jangachi with soy sauce was dropped under 5 after 32 days, after that the value was slowly decreased. As fermentation time passed, the content of ascorbic acid in gochu-jangachi was decreased rapidly at 15$^{\circ}C$ than at 5$^{\circ}C$ and that was disappeared after 16 days (soybean paste) and 20 days (soy sauce). In both samples, the degradation of chlorophyll a was faster than chlorophyll b, especially at 15$^{\circ}C$. The degradation of chlorophylls or production of pheophytin and pheophorbide were closely related to the ascorbic acid content during fermentation.

우리나라 고유의 전통발효식품으로서 장아찌류의 일종인 고추장아찌를 2가지 방법으로 제조하여 5$^{\circ}C$와 15$^{\circ}C$에서 보관 숙성시키면서 염도, pH, 아스코르브산, chlorophyll 및 그 유도체의 함량 변화를 조사하여 검토하였다. 장아찡의 염 농도는 담근원의 염도와 상관이 있었으며 저장온도가 높은 쪽이 염의 침투 속도가 빨랐다. 숙성 중 pH는 5$^{\circ}C$의 경우 완만한 감소를 나타냈으나 15$^{\circ}C$의 경우는 된장 담금은 32일째부터 pH 5.0 이하로 낮아졌다. 아스코르브산의 함량은 숙성기간이 경과됨에 따라 감소되었는데 특히 15$^{\circ}C$에서 된장 담금인 경우에 보다 급속하게 감소되어 16일째에 잔존율이 2% 정도였고 그 이후로는 소실되었다. 고추장아찌가 숙성됨에 따라 chlorophyll a 및 chlorophyll b의 함량은 크게 감소되었고, pheophytin과 pheophorbide a의 함량은 크게 증가되었는데, 이는 된장 담금인 경우가 간장 담금한 경우보다 그 정도가 크게 나타났다. 특히 아스코르브산의 함량과 chlorophyll 분해율과의 관계를 검토해보면 아스코르브산이 급격하게 파괴됨에 따라 chlorophyll 분해도 급속하게 일어났으며 pheophorbide 생성량도 빠른 속도로 증가됨을 알 수 있었다.

Keywords

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