Dried apple jeonggwa, a traditional Korean dessert, was made using various apple varieties, such as Jonathan, Fuji, and Hongro. After making the dried apple jeonggwa, the physical and sensory properties of the dessert made using different apple varieties were compared. The apple varieties had no differences in moisture content, weight loss, or sugar content. Chromacity differences were observed depending on the varieties, but E was small. Hardness was highest in Jonathan, while resilience was highest in Fuji, but there was no significant difference in hardness. In the sensory evaluation, appearance, color, sweetness, hardness, chewiness, and overall acceptability were highest in Jonathan, while there was no substantial difference among the varieties in terms of flavor, sourness, or adhesiveness.

The purpose of this research is to develop bellflower (Platycodon grandiforum) root Jeonggwa as a health food. The Omija (Schizandra chinensis Baillon) water extract with 0-8% (w/w) Jeonggwa added was stored at for 12 weeks. The quality characteristics of Jeonggwa during storage were investigated. The Jeonggwa showed a lower pH and a higher acdity as the amount of Omija water extract that was added increased. The moisture content of Jeonggwa were rose from 15-18% to 16-22% within 2 weeks of storage, and remained at that level up to the end of storage. The total viable cells of bellflower root Jeonggwa were 2.1~2.3 log CFU/g and increased in number during storage but never exceeded 4 log CFU/g. The shelf life of the Jeonggwa was extended when the Omija extract was added. The lightness (L), redness (a) and yellowness (b) of the Jeonggwa during its storage at were highest in control samples, and the values decreased with the increase in the Omija extract concentration (p. The hardness and strength of the Jeonggwa significantly decreased as the Omija extract concentration rose (p

다양한 건강 기능성을 가진 오미자 추출물을 첨가하여 맛과 색상이 우수한 정과를 개발할 목적으로 연근 정과를 제조한 후 에 12주간 저장하면서 종합적인 품질특성 변화를 조사하였다. 연근 정과의 pH와 산도는 오미자 첨가량이 많을수록 pH가 낮고 산도가 높았다. 저장초기의 수분함량은 약 8%였으며, 저장 2주까지 수분함량이 14-17%까지 증가한 후, 저장말기까지 큰 변화가 없었으며 대조군은 오미자 첨가구보다 수분함량이 낮았다. 연근 정과의 총균수는

The purpose of this research is to develop bellflower (Platycodon grandiflorum) root and lotus (Nelumbo nucifera) root Jeonggwa as a health food. The quality characteristics of Jeonggwa to which 0-8% (w/w) of Omija (Schizandra chinensis Baillon) water extract was added were investigated. The moisture contents of bellflower root Jeonggwa were 14.9-18.0%, where as that of lotus root Jeonggwa was 6.9-8.4%. The acidity of bellflower root Jeonggwa was 0.477-0.585% and that of lotus root Jeonggwa was 0.513-0.572%; values increasing levels of Omija extract. The lightness (L) and yellowness (b) values of bellflower root Jeonggwa decreased with increasing amounts of Omija extract, and the lightness (L), redness (a) and yellowness (b) values of lotus root Jeonggwa decreased with increasing Omija extract concentration (p