This study was conducted to examine contents of total acid and free amino acids in the Demi-glace with added quantity of Omija extracts. Firstly, The level of Total acid content of Demi-glace sauces was 1.08~1.89% and Omija extracts was 2.77~7.24%. The more Omija extracts added, there was the higher total acid contents. Sauces and extracts of 5% Omija was the highest. Secondly, Total free amino acids contents of control was 2518.52mg%, and Omija sauces was 2261.52~2894.14mg%. 2% Omija sauces was the highest among them. Hydroxyproline of total 34 free amino acids was the highest, and Glutamic acid 158.42mg%, Proline 78.90mg% was next in order. Arginine was the highest with 27.40~34.40mg% among 9 essential amino acids contents. Glutamic acid was the highest contents with 123.18~158.42mg%. Compared to control's(0.41mg%), Omija added group was 20.63~27.82mg% and it was the highest increase. While other 15 amino acid was analyzed, Hydroxyproline was the highest contents with 1,737.22~2,205.80mg%. Compared to control group(15.63mg%), proline was 57.01~78.90mg% Omija added group and it was increased with the highest contents. In essential amino acid, flavor enhancing amino acid and other amino acid were increased and the highest contents with 2% added Omija sauce. Thirdly, sensory characteristics of Demi-glace sauces based on overall preference, It was find that 2% added Omija was the best. 2% added was the best for color, flavor, taste, texture, overall acceptability(P〈.001). In terms of Demi-glace sauces' gender preference, male and female people liked 2% added Omija color, flavor, taste, texture, overall acceptability. It was find that there was no significant differences between male and female.

• 김현덕 | Kim, Hyun-Duk