Korean Journal of Food Science and Technology (한국식품과학회지)

Korean Society of Food Science and Technology (한국식품과학회)
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Rapid Processing of the Fish Sauce and Its Quality Evaluation

속성어간장 제조 및 품질 평가

  • Shin, Suk-U (Department of Food Science and Technology, Yosu National University) ;
  • Kwon, Mi-Ae (Department of Food Science and Technology, Yosu National University) ;
  • Jang, Mi-Sun (Department of Food Science and Technology, Yosu National University) ;
  • Kang, Tae-Jun (Department of Food Science and Technology, Yosu National University)
  • Published : 2002.08.01
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Abstract

Changes in chemical characteristic, microflora, and sensory evaluation of fish sauce extracted at an interval of one week from fermented solution were investigated. pH was reduced from 6.0 to 4.5, and trimethylamine oxide from 132.5 to 87.2 mg/100g during fermenting periods. Trimethylamine increased from 5.6 to 50.2 mg/100g, and volatile basic nitrogen from 48.3 to 232.5 mg/100g. Bacterial flora isolated from the fish sauce were 70% Lactobacillus sp. and 13% Bacillus sp. Among the free amino acids, alanine, glutamic acid, valine, and methionine contents constitute 40% of the total free amino acids. Major non-volatile organic acid of the fish sauce was lactic acid (76%). Sensory evaluation results of the fish sauce were higher than the traditional soybean sauce after 28 days of fermentation.

속성 어간장을 제조하기 위해 동결된 멸치를 분쇄, 가열 및 여과하여 Protease로 가수분해한 후 코지, 식염을 가한 것을 시료A로 하고 여기에 젖산, 솔비톨, 에칠알콜을 가한 것을 시료B로 하여 $30^{\circ}C$에서 35일간 발효하면서 1주일 간격으로 분취해서 성분변화, 세균 flora 및 관능검사를 행한 결과는 다음과 같다. pH와 TMAO는 발효기간이 경과됨에 따라 감소하였고 TMA와 VBN은 증가하였다. 분리균의 세균 flora 는 Lactobacillus sp.가 A,B시료에서 각각 $70{\sim}71%$ Bacillus sp.가 $13{\sim}18%$로 이 두종이 우점종이였다. 총 유리아미노산은 A시료에서 발효 28일째 9.731 mg/100g 중 alanine, tyrosine, valine, methionine 순으로 총 유리아미노산의 38%, B시료에서는 5,559 mg 중 glutamic acid, lysine, histidine, leucine 순으로 40% 검출되었다. 총 비휘발성 유기산은 A,B시료에서 발효 28일째 각각 4,295, 4,075 mg/100g 으로 양 시료 모두 lactic acid가 76%로 가장 높았고 그 다음으로 propionic acid, acetic acid 순이였다. 핵산관련물질은 A,B시료에서 발효 28일째 각각 54, 51 mg/100g 중 hypoxantine이 각각 93, 96%, inosine이 7.2, 4.0%였다. 관능검사 결과는 맛, 냄새, 색택 등으로 보아 발효 28일째가 가장 우수하였다.

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References

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