Free Sugar, Free Amino Acid, Non-Volatile Organic Acid and Volatile Compounds of Dongchimi added with Jasoja(Perillae semen)

자소자 첨가 동치미의 유리당, 유리아미노산, 비휘발성 유기산 및 휘발성 향기성분

  • 황재희 (영동전문대학 호텔조리과) ;
  • 장명숙 (단국대학교 식품영양학과)
  • Published : 2003.02.01

Abstract

All optional ingredient, Jasoja(Perillae semen) was adopted to improve Dongchimi in qualify during fermentation. Free sugar, free amino acid, non-volatile organic acid and volatile compounds were determined during fermentation at 10$^{\circ}C$ for 45 days. Free sugar content was slightly higher in 0.5%-Jasoja-treated samples than that of control. The contents of free amino acids in control Dongchimi (without jasoja) increased slowly during fermentation while those in 0.5 %-treated samples began to decrease after reaching their maximum value on the day 11 when Dongchimi became most acceptable. There were 6 non-volatile organic acids, such as lactic, fumaric, succinic, malic, tartaric, and citric acid. Among these, only lactic and succinic acid increased consistently with fermentation while others decreased. Volatile components in Dongchimi were mostly identified as sulfur-containing compounds by gas chromatography. Their numbers and % peak areas in the gas chromatogram decreased slightly with the increase in organic acids and alcohols during fermentation period. On the other hand, Dongchimi prepared with Jasoja maintained its contents of total acids as well as the level of sulfur-containing compounds.

자소자를 무 무게에 대해 0, 0.25, 0.5, 0.75, 1.0%의 비율로 첨가하여 담근 동치미 중 자소자를 첨가하지 않은 대조구와 전보에서 가장 기호도에서 가장 좋은 평가를 받고 이화학적으로 가장 바람직한 결과를 나타낸 0.5% 첨가한 동치미의 유리당, 유리아미노산, 휘발성 유기산 및 향기성분을 알아본 결과 다음과 같다. 1. Glucose와 fructose의 함량은 발효가 진행되면서 감소하는 반면 glycerol의 경우에는 동치미 담금직후 및 적숙기에는 존재하지 않았으나 서서히 증가하여 발효 말기인 45일에 나타나는 경향이었다. 유리당 함량은 자소자를 0.5% 첨가한 경우가 자소자를 첨가하지 않은 대조구보다 약간 많았다. 2. 유리아미노산은 대조구의 경우 저장기간이 증가함에 따라 서서히 증가하였으나 0.5%의 자소자를 첨가하여 담근 동치미의 유리아미노산은 맛이 좋아지는 시기인 발효 11일까지는 다량의 아미노산을 함유하였으나 저장기간이 증가함에 따라 감소하는 경향으로 나타났다. 3. 확인된 비휘발성 유기산은 latic acid, fumaric acid, succinic acid, malic acid, tartaric acid, citric acid 였는데, 발효가 진행됨에 따라 lactic acid와 succinic acid만이 점차로 증가하였고, 나머지는 감소하였다. 4. 동치미의 향기성분은 담금 즉시에는 0%와 0.5%를 비교한 결과 두 처리구 모두 함황 화합물이 대부분을 차지하여 동치미의 주 향기성분이었는데, 발효가 진행되면서 함황 화합물의 수나 %area가 약간 감소하였고, 산류나 알코올류 등이 증가하였다 이에 반해 자소자 처리구의 경우는 산류의 큰 증가를 보이지 않았고, 또한 함황 화합물의 변화가 두드러지지 않았고, 거의 유지하는 수준이었다. 본 실험의 결과 자소자를 첨가하지 않은 대조구보다 0.5% 처리구가 유리당, 유리아미노산, 비휘발성 유기산의 함량이 다소 높게 나타나 전보에서 가장 기호도가 높게 평가된 자소자 0.5% 첨가한 것과 일치하는 결과를 보였다.

Keywords

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