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Color Characteristics of Korean Traditional Soy Sauces Prepared Under Different Processing Conditions

제조조건에 따른 한국전통간장의 색 특성에 관한 연구

  • 전민선 (연세대학교 식품영양학과) ;
  • 손경희 (연세대학교 식품영양학과) ;
  • 채선희 (연세대학교 식품영양학과) ;
  • 박현경 (연세대학교 식품영양학과) ;
  • 전형주 (서일대학 식품영양과)
  • Published : 2002.02.01

Abstract

The characteristics of blown color of Korean traditional soy sauces under different processing conditions were investigated in this research. As for meju type, traditional and modified mejus were used. The samples were produced from four levels of aging time. 0 day, 60 days, 120 days and 180 days in both clay jar and glass jar. Color intensity of soy sauce was probed with different mothods. In terms of colorcharacteristics, the absorbance at 420 nm seemed to reflect the brown color intensity of soy sauces. UV-VIS spectra of the soy sauce with traditional meiu revealed that the absorbance at 235 nm was produced during the soaking period whereas that at 410 nm was created during the aging process and only round in the spectra of soy sauce aged for 180 days. As for the soy sauce with modified meiu, the maximum absorbance was focused at 235 nm which were prepared during soaking period.

본 연구에서는 메주의 종류와 숙성시간, 담금용기를 달리하여 전통적 방법으로 제조한 간장에서 제조과정시 형성되는 색의 특성을 연구하였다. 유링미노산 함량은 맛난맛을 내는 glutamic acid와 aspartic acid의 함량과 함께 쓴맛을 제공하는 isoleucine과 leucine의 함량 또한 유리병에 담근 간장에서 모두 높게 나타났으므로 유리아미노산의 절대적인 함량차이만으로 유리병의 풍미를 높게 평가할 수는 없었다. 항아리에서 담근 간장보다 유리병에서 담근 간장의 전체적인 색변화를 나타내는 ΔE는 숙성시간에 따른 뚜렷한 변화는 보이지 않았으나 담금용기에 있어서 항아리보다 유리병에서 담근 간장의 색이 진한 경향을 나타냈다. 파장길이 420nm에서의 흡광도를 측정한 결과 메주의 종류에 관계없이 숙성기간이 길어짐에 따라 흡광도가 증가하는 양상을 나타내었으며 전통메주로 담근 간장군에서는 숙성이 진행됨에 따라 항아리 간장의 흡광도가 유리병 간장에 비해 더 뚜렷하고 높은 증가 경향을 보였다. 400/500의 비율을 측정한 결과에서는 숙성시간이 길어질수록 비율이 감소하였으나 유리병에 담근 간장은 큰 변화를 보이지 않았다. ΔA는 숙성시간이 증가할수록 변화가 적거나 낮아지는 경향을 나타내어 숙성이 진행될수록 색이 진해지는 일관성 있는 결과를 나타내었다. 전반적으로 항아리에서 담근 간장은 색변화가 뚜렷하지 않았다. 시료간장에 대한 UV-VIS spectra 측정한 결과 모든 간장 시료에서 숙성시간에 관계없이 235 nm 부근에서 최대 파장을 보였으며 180일 이후에 235 nm 부근과 410nm 부근의 두 부분에서 최대 파장을 나타내는 것으로 보아 410 nm 부근이 파장은 180일 이후에 형성되는 것으로 보인다. 또한 오늘날 주거형태 변화에 따라 담금용기를 항아리에 유리병으로 달리하여 보았을 때 맛과 향미, 색의 면에서 유리병에 담근 간장이 바람직하지 못한 결과를 나타내었다.

Keywords

References

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