In the present study, we investigated the physicochemical characteristics and sensory qualities of gruel with added ground yam (20~80%) to increase consumption and application of yams. pH and sugar content of sample gruel decreased with increasing yam content, whereas spreadability increased gradually. Lightness and greenness decreased; however, blueness increased as yam content increased. Viscosity decreased with increasing yam content. Gruel with 40% added yam was the most preferred for flavor, taste, texture, and overall preference. From these results, we found that adding 40% yam was the best to make gruel with high sensory quality.

This study evaluated the quality and sensory characteristics of sulgidduk added with yam powder (5~20%) during 4 days storage. The moisture content of samples initially decreased as the yam powder content increased, but subsequently increased during storage. The pH values also increased during storage, although there was no significant difference. L values decreased and both a and b values increased as yam powder content increased. The decreased L values during storage were not significantly different from control group. The hardness of samples decreased with increasing yam powder content, while hardness of control group markedly increased during storage. Cohesiveness increased as yam powder content increased, and tended to decrease during the storage. Springiness also initially increased as yam powder content increased. No change was apparent during storage in control group or samples added with up to 10% yam powder, while springiness was decreased insignificantly in samples with over 10% yam powder. Lightness, yam odor and savory taste of sulgidduk tended to increase as yam powder content increased, while chewiness decreased. The savory odor was the highest in sulgidduk added with 10% yam powder. Sulgidduk added with 10% yam powder was the most preferred in appearance, taste, texture and overall preference.

Magnesium and magnesium alloys are promising materials for light weight and high strength applications. In order to obtain homogeneous and high quality products in powder compaction and powder forging processes, it is very important to control density and density distributions in powder compacts. In this study, a model for densification of metallic powder is proposed for pure magnesium. The mode] considers the effect of powder characteristics using a pressure-dependent critical density yield criterion. Also with the new model, it was possible to obtain reasonable physical properties of pure magnesium powder using cold iso-state pressing. The proposed densification model was implemented into the finite element method code. The finite element analysis was applied to simulating die compaction of pure magnesium powders in order to investigate the density and effective strain distributions at room temperature.

미강 첨가량을 달리하여 제조한 쿠키 반죽의 밀도는 미강첨가량이 증가할수록 낮아지는 경향을 나타내었으나, 유의적인 차이는 나타나지 않았으며 미강의 첨가는 쿠키의 퍼짐성, 손실율 및 팽창율에는 큰 영향을 미치지 않았다. 쿠키의 수분함량은 미강 30% 첨가구가 2.11% 로 가장 낮게 측정되었으며 색도는 미강의 첨가량이 증가할수록 명도와 황색도는 낮아지고 적색도는 높아지는 경향을 나타내었다. 조직감은 미강의 함량이 증가하면서 hardness, 부착성,

다양한 생리활성 기능을 가진 미강 분말을 첨가하여 제조한 파운드케이크의 품질특성을 측정한 결과는 다음과 같다. 미강 첨가량을 달리하여 제조한 파운드케이크의 반죽에 대한 비중은 대조구가 0.78로 높게 측정되었으며 미강 첨가량이 증가함에 따라 감소하였다. 파운드케이크의 부피(mL)는 대조구가 612.50 mL, 30% 첨가구가 690.00 mL으로 미강첨가량이 증가할수록 높아졌으며 파운드케이크의 수분함량은 미강첨가량이 증가할수록 낮게 나타났다. 파