키토산이 백설기의 품질특성에 미치는 영향을 조사하기 위하여 0~0.5%의 키토산을 첨가한 백설기를 제조한 후 백설기의 저장성, 물성 및 관능적 품질특성을 조사하였다. 백설기의 pH는 대조구가 5.65이었으며 0.05~0.5%의 키토산 첨가군은 pH 7정도였다. 백설기의 색상은 멥쌀 100%인 대조군은 명도(L치) 84.28, 적색도(a치) -1.56, 황색도(b치) 7.68 이었으며, 키토산 첨가에 의해 명도, 적색도, 황색도가 모두 높아지는 경

Paeksulkis(Korean rice cake) containing 0-0.5% chitosan were prepared for test the quality of microbiological, mechanical and sensory characteristics. The pH of Paeksulkis was 5.65 without chitosan and that was about 7.0 with 0.05-0.5% level of chitosan. In Hunter's color values of Paeksulkis of control, the lightness(L) was 84.28, redness(a) was -1.56 and yellowness(b) was 7.68. The lightness(L), redness(a) and yellowness(b) were increased with increasing concentration of chitosan in Paeksulkis. In mechanical characteristics of Paeksulkis, cohesiveness and springiness were the highest in control group while strength, hardness, gumminess and brittlenes were higher in chitosan added group than control group. In sensory evaluation of Pasksulkis, control group obtained the highest score in color, texture, after swallowing and overall quality(p10CFU/g and those of control increased for 2 weeks, reached at 7.4105/ CFU/g and then decreased about 1 log cycle for 2 weeks during storage at 5. TBC of Paeksulgis added 0.3∼0.5% of chitosan were 2 log cycles lower than that of control at the end of storage at 5. TBC of Pasksulgis control increased to 108/ CFU/g during storage at 20 but that of 0.5% chitosan added group was 1 log cycle lower than control at the end of storage. Shelf-life extension of Paeksulkis by chitosan was more effective during storage at 5 than at 20.

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