The effects of different ingredient formulations on physicochemical qualities and consumer preferences were investigated using Baikseolgi incorporated with perilla powder, a healthy food ingredient, as a model system. Perilla powder was incorporated into the formulation at five different amounts (0%, 5%, 10%, 15%, and 20% (w/w)) by replacing equivalent amount of non-glutinous rice flour. After appropriate mixing, rice cakes were steamed and quality attributes were evaluated after cooling. The pH increased but moisture content decreased significantly with an increase in the perilla powder substitution (p < 0.05). Lightness (L*) decreased significantly from 80.32 to 70.73 with the higher incorporation of perilla powder (p < 0.05), indicating that the color of Baikseolgi became dark. Redness (a*) and yellowness (b*); on the other hand, increased significantly (p < 0.05). Hardness decreased significantly as the perilla powder content increased in the formulation (p < 0.05). With respect to overall acceptability, the control received the highest mean score of 5.90; however, this was not significantly different from all samples tested except for 20% sample (p > 0.05). Five percent sample received the highest or competitively high preference scores in all attributes; thus, incorporation of 5% perilla powder in the formulation of Baikseolgi would be recommended while taking advantages of the health benefits of perilla without sacrificing the quality acceptance by the consumers.

Strawberry powder was incorporated into Baikseolgi by substituting the non-glutinous rice flour in the range of 0-8% based on the total weight of the non-glutinous rice flour and the effects on physicochemical and sensory properties were investigated. pH decreased significantly with the higher amount of strawberry powder in the formulation whereas titratable acidity showed a reverse trend (p<0.05). Moisture content also decreased significantly with the increasing amount of strawberry. Lightness (L*-value) decreased significantly with higher strawberry powder concentration, indicating that the color of Baikseolgi became dark as also indicated by the visual observation. Redness (a*-value) and yellowness (b*-value), on the other hand, increased significantly with the substitution of strawberry powders up to 8% (p<0.05). Increases in strawberry powder concentration up to 8% in the Baikseolgi formulation significantly increased the intensities of sensory color, flavor, and taste attributes; on the other hand, the intensities of sensory moistness and chewiness decreased significantly (p<0.05). Results from the consumer test revealed that control received the highest acceptability scores in all attributes but 4% sample also obtained the competitive scores. Finally, Pearson correlation analysis revealed several very highly significant linear correlation between the means used to access physicochemical, sensory properties, and consumer preferences.

본 연구에서는 BC를 백설기에 첨가하여 저장 중 품질특성을 조사하였다. 그 결과, bacterial cellulose 0.09%이상 첨가한 백설기가 무첨가구에 비해 저장동안 노화도가 낮게 나타났다. 또한 hardness를 측정한 결과 BC첨가를 첨가한 구간들에서 hardness가 낮게 나타나 노화억제효과가 있었다. 관능검사 결과 거의 모든 평가항목에서 시료들 간의 유의적인 차이가 없었으나, 전반적인 기호도에서 BC를 첨가한 백설기가 더 좋은 것으로 나타