Changes in the Quality Characteristics of Dried Laver (Porphyra yezoensis Ueda) during Storage

건조김의 저장중 품질특성 변화

In an attempt to improve the quality stability of dried layer (Porphyra yezoensis Ueda), during longterm storage and distribution, a 6 months storage trial at different temperature and packaging condition was conducted. Dried layer samples were prepared by conventional procedure with different washing condition and $5^{\circ}C$ and $30^{\circ}C$ were employed as storage temperature. The moisture sorption isotherm was drawn at $5^{\circ}C$ and $25^{\circ}C$ and BET equation was prepared from the moisture sorption isotherm. The monolayer moisture contents of dried layer were 7.4% at $5^{\circ}C$ and 6.4% at $25^{\circ}C$, respectively. It was also found that the changes in comprehensive quality of dried layer during storage was much less at low temperature and the degree of washing before drying process as far as its moisture contents are lower than monolayer moisture contents. With regard to the packing methods, vaccum packing was superior to air containing packaging for the maintainance of quality during storage.

건조김의 품질을 향상시키고 저장안정성을 높이기 위하여 수세물량을 달리하여 건조김을 제조하고$30^{\circ}C$와 $5^{\circ}C$에서 포장방법별로 6개월동안 저장하면서 품질변화 특성을 조사하였다. 건조김의 단분자층 수분함량을 $5^{\circ}C$와 $25^{\circ}C$에서 구해본 결과 각각 7.4%와 6.4%로 나타났다. 저장효과는 원료김을 충분한 물로 수세하여 수분함량을 단분자층 이하로 낮추어 가능한한 낮은 온도에서 저장하는 것이 바람직 하였으며 포장방법에 있어서는 진공포장이 함기포장에 비하여 품질유지가 다소 좋은 것으로 나타났다.