Quality Change of Starch Syrups during Storage

전분당의 저장중 품질 변화

Quality changes of starch syrups were investigated during storage at 20 and $60^{\circ}C$. Color properties such as spectrophotometric properties, HMF and Hunter color value were continuously increased during storage period. And they were largely changed as much as storage temperature and hydrolysis degree were higher. Starch syrups were all showed to flow behaviors as non-Newtonian fluids and increased slightly during storage. And monosaccharide was decreased and di- and oligosaccharide were slightly increased during storage.

국내에서 생산되고 있는 4종류의 물엿에 대하여 $20^{\circ}C$와 $60^{\circ}C$의 온도에 저장중 품질 변화를 조사하였다. 저장 기간중 물엿의 색택은 흡광도, HMF 및 Hunter L 및 ${\Delta}E$ 값으로 측정하였을 때 모두 증가하였는데 전반적으로 저장 온도가 높고 가수분해 정도가 큰 물엿일수록 변색이 심하게 나타났다. 물엿은 모두 비뉴우턴 유체의 특성을 나타내었으며 저장중 악간의 증가만을 나타내었다. 그리고 저장기간중 물엿의 당조성은 단당류의 비율이 상대적으로 감소하고 이당류나 소당류의 비율이 약간 더 증가함을 알수 있었다.