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고서현 ( Seo Hyun Ko ),주나미 ( Na Mi Joo ) 대한영양사협회 2009 대한영양사협회 학술지 Vol.15 No.4
The study aimed to determine the optimal mixing ratio of two different amounts of Letinus edodes powder and egg for preparation of pasta. The complete analysis was conducted using the Design Expert 7 program (State-Easy, Minneapolis, MN). Response surface methodology revealed 10 experimental points, including two replicates for L. edodes powder and egg. L. edodes pasta formulation was optimized using rheology. Lightness and redness displayed a lineal model pattern, whereas yellowness was represented by a quadratic model. The sensory evaluation parameters of texture, color, flavor, appearance and overall quality showed significant differences for color (p<0.01), flavor (p<0.05), texture (p<0.05) and overall quality (p<0.05). All sensory parameters showed significant values in a quadratic model. The optimum formulations processed by numerical and graphical optimization were determined as 15 g of L. edodes powder and 37.5 g of egg.
고서현 ( Seo Hyun Ko ),김순임 ( Soon Im Kim ),한영실 ( Young Sil Han ) 한국식품조리과학회(구.한국조리과학회) 2008 한국식품조리과학회지 Vol.24 No.6
The principal objective of this study was to evaluate the quality characteristics of yogurt to which had been added extracts of low quality dried persimmons, in an attempt to expand the range of use of low-quality dried persimmons. In the results of our sensory evaluation, our optimal results were attained with the addition of 5g of dried persimmon extracts, 90g of water, 20g of oligosaccharide, and 50g of fructose at a specific level of 1000mL. During the 20-day storage period, the pH value of the dried persimmon yogurt was lowest on the 15th day in the control group and the 20th day in the yogurt to which 0.5% extract had been added. The titratable acidity was lowest by a significant margin on the 10th day for all types of yogurt. Viscosity assays showed a stable level of acidity over different storage periods. The number of viable cells demonstrated a trend toward increase with passing time, and the number of viable cells in the dried-persimmon yogurt was higher than that in the control yogurt.