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The purpose of this study was to determine the optimum sodium concentration (0∼8%), soaking time (4∼20 min) and storage time (0∼60 day) for preparation of persimmon jangachi with kochujang sauce using response surface methodology. Physicochemical properties (salinity, pH, Hunter"s color value, cutting force, and sensory evaluation) of persimmon kochujang jangachi were analyzed during storage at 20°C for 60 days. When the proximate composition of persimmon was analyzed, moisture content, crude protein content, crude lipid content, and crude ash content were 85.41%, 0.51%, 0.22%, and 0.20%, respectively. For persimmon kochujang jangachi manufactured with different sodium concentrations, soaking times, and storage times, salinity, pH, Hunter"s color value of L, a, and b, color, flavor, taste, texture, and overall preference were represented by a quadratic model. Cutting force was represented by a linear model pattern. In conclusion, the optimal formulation for persimmon kochujang jangachi, as assessed by numerical and graphical optimization methods, was a sodium concentration of 6.91%, soaking time of 11.36 minutes, and storage time of 25.18 days.
본 연구에서는 고추장 소스를 주 절임원으로 하여 단감 침지액의 염 농도(0, 2, 4, 6, 8%)와 침지시간(4, 8, 12, 16, 20분)을 달리하여 단감 고추장 장아찌를 제조하였다. 20°C에서 0~60일간 저장하면서 경시적으로 시료를 채취하여 단감과 소스를 분리한 후 단감 고추장 장아찌의 염도, 당도, pH, 색도, 물성 및 관능검사를 측정하였고, 반응표면분석법을 이용하여 단감 고추장 장아찌 최적 제조 조건을 설정하였다. 단감 침지액의 염 농도, 침지시간, 단감 고추장 장아찌의 저장기간을 달리하여 제조한 단감 고추장 장아찌에 대한 분석결과 염도, 당도, pH, 색도의 L, a, b 값, 관능검사의 색, 향미, 맛, 물성 및 전체적 선호도는 독립변수 간의 교호 작용하는 quadratic model이 선택되었고, 절단력은 linear model이 선택되었다. 독립변수인 단감 침지액의 염 농도, 침지시간, 단감 고추장 장아찌의 저장기간의 범위 내에서 반응표면 분석에 의해 유의적으로 평가된 각 항목별 최적조건으로 canonical 모형의 수치 최적화를 통하여 설정된 최적조건은 침지액의 농도 6.91%, 침지시간 11.36분, 저장기간 25.18 일이 가장 적합한 장아찌 품질 조건으로 나타났다.
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