Food Science and Preservation (한국식품저장유통학회지)

The Korean Society of Food Preservation (한국식품저장유통학회)
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Quality Characteristics of Commercial Rice Soybean Paste

국내외 시판 쌀된장의 품질특성

  • Kim, Yun-Sung (Department of Agro-food Resources, National Academy of Agricultural Science, RDA) ;
  • Kim, Ji-Yeun (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)
  • 김윤성 (국립농업과학원 농식품자원부) ;
  • 김지연 (국립농업과학원 농식품자원부) ;
  • 최혜선 (국립농업과학원 농식품자원부)
  • Received : 2011.06.17
  • Accepted : 2011.11.04
  • Published : 2011.12.30
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Abstract

Soybean-based food items have been developed as common fermented side dish sauces in South Korea, Japan, and China. Each of these countries, however, has its own fermentation method, including a microorganism-based fermentation process, the mixing of ingredients, the fermentation process, and the mixing of starch. The purpose of this study was to determine the quality characteristics of the commercial product. Fourteen kinds of rice soybean paste (Korea, 2 Japan, 12) were prepared, and their physiochemical properties (ammonium nitrogen, amino nitrogen, amylase, protease, and reducing-sugar contents) were analyzed. JRD-1 was found to contain the highest amount of amino-type nitrogen (426.45 mg%) while KRD-2 showed 316.10 mg%. For the protease activities, the following results were obtained: JRD-9, 695.10 unit/g JRD-11, 671.45 unit/g and JRD-5, 665.03 unit/g. As for the amylase activities, the results that were obtained were JRD-7, 53.65 unit/g JRD-8, 50.71 unit/g KRD-1, 46.52 unit/g JRD-1, 46.29 unit/g and JRD-11, 33.61 unit/g. This research provided information for the quality characteristics of commercial rice soybean paste.

시중에서 판매되는 국내외 14종의 쌀된장의 품질 특성을 분석하고자 아미노태 질소 함량, 암모니아태 질소 함량, 환원당 함량, Protease활성, Amylase활성 및 일반 세균수를 조사하였다. 그 결과, Protease 활성은 국내 제품인 KRD-1 (415.16 unit/g)과 KRD-2 (380.57 unit/g)의 값을 나타내었고, 일본제품은 510.14~695.10 unit/g으로 분석되었다. Amylase 경우, KRD-1 (46.52 unit/g)과 KRD-2 (7.41 unit/g)의 활성을 보였으며, 일본제품은 3.97 unit/g~53.65 unit/g의 활성을 나타내었다. 특히, JRD-1 (46.29 unit/g), JRD-7 (53.65 unit/g) 및 JRD-8 (50.71 unit/g)로 다른 시료에 비해서 높은 활성을 나타내었다. 환원당의 경우 14종의 쌀된장 중 JRD-10~12시료에서 각각 0.52%, 0.55%, 0.54%의 값을 나타내었다. 아미노태 질소 함량의 경우, 국내산 제품은 KRD-1 (207.61 mg%)과 KRD-2 (316.10 mg%)의 함량을 보였고, 일본제품은 209.45 mg%~426.45 mg%의 함량을 보였으며, JRD-1 (426.45 mg%), JRD-7 (303 mg%) 및 JRD-9 (352.94 mg%)의 높은 값을 나타내었다. 국내산 쌀된장은 KRD-1 (19.22 mg%)였으며, 일본 쌀된장은 1.11 mg%~29.25 mg%의 함량을 보였고 특히 JRD-1 (29.25 mg%), JRD-2 (10.75 mg%), JRD-10 (14.44 mg%), JRD-12 (13.06 mg%)로 높은 값을 나타냈다. 일반세균수의 경우, 국내산 쌀된장인 KRD-1과 KRD-2의 경우 5 Log CFU/g이상의 균수가 측정되었으며 일본산 쌀된장의 경우JRD-2 (3.82 Log CFU/g)를 제외한 모든 샘플에서 균이 검출되지 않았다. 본 연구결과는 국내외 시판되는 쌀된장의 품질특성에 대한 정보를 제시하였다.

Keywords

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