한국식품과학회지 (Korean Journal of Food Science and Technology)

한국식품과학회 (Korean Society of Food Science and Technology)
권호 표지

감초, 겨자 및 키토산을 첨가한 저염 된장의 발효 특성

Fermentation Properties of Low-Salted Doenjang Supplemented with Licorice, Mustard, and Chitosan

  • 투고 : 2009.12.29
  • 심사 : 2010.02.15
  • 발행 : 2010.06.30
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초록

감초, 겨자, 키토산을 첨가하고 전통된장의 염도를 30% 낮춘 된장을 제조하여 된장의 발효특성을 조사하였다. 염도를 12.7%에서 10.2, 8.9%로 낮춘 된장에 감초, 겨자, 키토산 등 첨가물의 첨가는 된장의 내부의 균수, 색도, 산도에 거의 영향을 미치지 않았다. 저염된장은 된장표면에 white pellicle-forming strain이 발생하였으나 첨가물을 함유하고 있는 된장에서는 발생되지 않았다. 발효 20일째의 첨가물을 첨가한 염도 8.9% 된장의 아미노태 질소함량은 332 mg%로서 발효 40일의 염도 12.7%의 된장과 유사하였다. 관능평가에서는 첨가물을 첨가한 저염된장에서 구수한 맛 등이 높게 평가되어 종합적 기호도가 가장 높게 나타났다. 이러한 결과로부터 감초, 겨자, 키토산의 첨가는 된장의 발효시간을 단축시키고 기호성을 향상시킬 수 있으며 된장의 염도를 8.9%까지 낮출 수 있을 것으로 판단된다.

After supplemention with the licorice (Glycyrrhiza glabra), mustard (Brassica juncea), and chitosan as food additives to low-salted doenjang containing 30% lower salt than control doenjang (12.7% salt), fermentation properties of doenjang were investigated for 40 days. Adding the licorice, mustard, and chitosan to low-salted doenjangs containing 10.2% and 8.9% of salt did not affect the acidity, viable cell count, or color of doenjang. A white pellicle-forming strain was detected at the surface of low-salted doenjangs (10.2% and 8.9% salt) but not the control doenjang and low-salted doenjangs added with mixed additives (licorice, mustard, and chitosan). The amino nitrogen content of 8.9% salted doenjang added with mixed additives at 20 days was 332 mg% and this value was similar to that of 12.7% salted doenjang at 40 days. In sensory evaluation, the 8.9% salted doenjang added the additives had the highest score in overall palatability. These results indicate that salt contents of doenjang could be lowered to 8.9% by adding licorice, mustard, and chitosan, resulting in improved palatability, shortened fermentation period, and inhibited abnormal fermentation.

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