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굴(Crassostrea gigas) 패각 분말 첨가에 의한 배추김치의 식품학적품질 변화
도형훈 ( Hyounghun Do ),김지훈 ( Jihoon Kim ),한해나 ( Haena Han ),김송희 ( Songhee Kim ),김갑진 ( Gabjin Kim ),엄성환 ( Sunghwan Eom ),김영목 ( Youngmog Kim ) 한국수산과학회(구 한국수산학회) 2015 한국수산과학회지 Vol.48 No.5
This study investigated the effects of adding oyster shell powder (OSP) from Crassostrea gigas on the food quality of Chinese cabbage Kimchi (CCK). We monitored the changes in microbial levels, pH, acidity and sensory evaluation during the fermentation of CCK treated with various contents of OSP. The microbial assay showed that adding OSP to CCK inhibited the growth of viable cells, total coliforms, and lactic acid bacteria, with the greatest growth inhibition against lactic acid bacteria over the fermentation period. After fermentation for 18 days, the lactic acid bacterial counts in CCK treated with OSP (0.3%, 0.5% and 1%) were at least 1 log CFU/g lower than those of control CCK. In addition, the pH and acidity of CCK treated with OSP were lower than in control CCK over the fermentation period. The overall sensory evaluation of CCK with 0.3% OSP was better than that of control CCK after fermentation for 24 days. In conclusion, OSP treatment, especially 0.3% OSP, enhances the food quality and extends the self-life of CCK, while minimizing the detrimental effects on its sensory characteristics.
정태규(Taekyu Jung),이중엽(Joongyeop Lee),김영목(Youngmog Kim),권세진(Sejin Kwon) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
The propellant mixture ratio of gas generator changes when thrust control valve operate to change LRE thrust level. The mixture ratio change of gas generator result in gas temperature change and failure of turbine blade or deterioration of LRE specific impulse. The mixture ratio stabilizer(control valve) has been developed to maintain propellant mixture ratio of gas generator. This article deals with static characteristic of stabilizer. Also gas generator system simulation test has shown that the stabilizer can maintain propellant mixture ratio effectively within tolerable range.