Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Quality Characteristics of Commercial Korean Types of Fermented Soybean Sauces in China

중국 내 시판 한식 장류의 품질특성

  • Lee, Sun Young (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Baik, Soo Hwa (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Ahn, Yu Jin (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Song, Jin (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Kim, Jae Hyun (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Choi, Hye Sun (Department of Agro-food Resources, National Academy of Agricultural Science, RDA)
  • 이선영 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과) ;
  • 백수화 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과) ;
  • 안유진 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과) ;
  • 송진 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과) ;
  • 김재현 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과) ;
  • 최혜선 (농촌진흥청 국립농업과학원 농식품자원부 발효식품과)
  • Received : 2013.09.17
  • Accepted : 2013.10.14
  • Published : 2013.12.31
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Abstract

Soybean-based fermented foods have been used as traditional condiments in Korea, Japan and China. Thirteen Korean types of soybean sauce that had been manufactured and sold in China were examined to evaluate their quality. The pH, salinity, and moisture content of the samples were pH 5.17-6.86, 8.0%-23.0%, and 46.446-70.40%, respectively. The amino-type nitrogen content was in the range of 199.18 to 736.46 mg%. The total aerobic bacterial counts were 4.83-7.89 Log CFU/g. The coliform count of gochujang (CNH-2) was 2.31 Log CFU/g, but none were detected in the other samples. Moreover, Bacillus cereus counts from samples of doenjang and gochujang were in the range 2.00-4.09 Log CFU/g. The protease and amylase activity of samples were 379.02-781.36 unit/g and 5.29-63.27 unit/g, respectively.

콩을 이용한 발효식품인 장류는 한국, 중국 및 일본을 중심으로 이용되는 조미료로서 중요할 뿐 아니라 단백질의 급원으로 이용되어왔다. 본 연구는 중국 시중에 판매되는 장류 13종를 수집하여 pH, 염도, 수분, 미생물 수, 아미노태 질소, protease, amylase 활성을 분석하였다. 중국 장류 시료의 pH는 pH 5.17-6.86, 염도는 8.0-23.0 % 함량을 나타내었고, 수분함량은 된장(52.55-70.40%), 쌈장(50.36%), 고추장(46.44-56.41%), 간장(68.63%)으로 분석되었다. 아미노태 질소 함량을 측정한 결과, 된장(309.72-736.46 mg%) 함량을 나타내었고, 쌈장(284.69 mg%), 고추장(199.18-235.54 mg%), 간장(660.53 mg%)함량을 나타내었다. 일반 세균수는 4.83-7.89 Log CFU/g의 분포를 나타내었으며, 대장균 군의 경우, CNH-2 (2.31 Log CFU/g)를 제외한 모든 시료에서 검출되지 않았다. B. cereus균 수는 된장은 CND-5, 6을 제외한 시료에서 검출되었으며 2.00-4.09 Log CFU/g의 분포를 나타내었다. 고추장은 2.45-2.50 Log CFU/g이 검출되었으며, 쌈장과 간장에서는 검출되지 않았다. Protease활성은 된장(547.86-781.36 unit/g), 쌈장(470.67 unit/g), 고추장(379.02-637.80 unit/g), 간장(532.47 unit/g) 활성을 나타내었다. Amylase활성은 된장(5.29-63.27 unit/g), 쌈장(33.60 unit/g) 활성을 나타내었다. 본 결과를 통해 장류의 품질특성은 원료, 염도 및 다양한 발효미생물에 의해 결정되는 것으로 판단된다. 중국에서 일반적으로 판매 및 소비되는 한식 장류의 품질특성에 대한 기초자료를 제시하고자 하였다.

Keywords

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