Quality Characteristics and Antioxidant Activity of Sulgidduk Prepared by Addition of Aronia Powder (Aronia melanocarpa)

摘要

The effects of aronia powder on the rheological and sensory characteristics of Sulgidduk were investigated. The moisture content of Sulgidduk ranged from 40.86 to 44.40%; however, addition of aronia powder to Sulgidduk tended to decrease its moisturecontent. With regard to the rheological properties, the addition of aronia powder decreased the hardness, springiness, adhesiveness, cohesiveness, chewiness, gumminess, and brittleness of Sulgidduk. Chromaticity determination revealed a decrease in L andb values, while the a value increased with the increasing amounts of aronia powder. Total polyphenol, total flavonoid and total anthocyanin contents increased with the increasing amounts of aronia powder. Antioxidant activity, measured by DPPH and ABTSradical scavenging activities, was significantly higher than that of the control, and increased proportionally with the amount of aronia powder. During 4 day storage, the growth of total aerobic colony and coliform content significantly decreased with increasing levels of aronia powder in Sulgidduk. Sensory evaluation demonstrated the best score in color, taste and overall acceptance when aronia powder was added at 5% of rice powder. These results suggest that 5% aronia powder can be added for the preparation of Sulgidduk.