The Quality Characteristics of Brown Stock Prepared by Different Methods

Brown stock 추출방식에 따른 품질 특성에 관한 연구

The HPC(High Pressure Cooking) method and the traditional method of brown stock preparation are compared in terms of gelatin, free amino acid and sensory evaluation. The HPC outperform the traditional method. In addition, free amino acid content of brown stock increased when HPC method is applied. In traditional method, however, the contents of free amino acids gradually increased in proportion to the length of heating times. When the HPC method is used for brown stock, the level of alanine and methionine were relatively higher than that of traditional method. In order to measure the quality of brown stock made from different methods, the highly qualified chefs were selected. They favoured the taste and smell made from HPC while they preferred traditional approach to HPC in terms of stickiness and appearance(colour). It is turned out that five hours is the most appropriate heating time for HPC method to obtain the maximum extraction of amino acid. The results suggest that the quality of brown stock from HPC method is not at all inferior to that of traditional brown stock while the HPC approach can improve the level of productivity by saving the labour cost, food cost and time.