Quality Characteristics of Pound Cakes Prepared with Flowering Cherry (Prunus serrulata L. var. spontanea Max. wils.) Fruit Powder during Storage

버찌(Fruit of Prunus serrulata L. var. spontanea Max. wils.) 분말을 첨가한 파운드케이크의 저장 중 품질 특성

The study investigated the quality of pound cake prepared with various concentrations of cherry powder (obtained from ground fruit of Prunus serrulata L. var. spontanea Max. wils.). Pound cake was evaluated for their sensory property and physical quality stored for 10 days at $25^{\circ}C$. The pH of the batter decreased with rising cherry powder concentration. The specific loaf volume and height decreased (from 2.95 to $2.60\;cm^3/g$) with increasing in cherry powder. The baking loss rate of the pound cake tended to increased by $11.47{\sim}12.67%$, but with no significant differences. The lightness, redness, and yellowness values were significantly decreased with increases in cherry powder except for redness of pound cake crumb. As the concentration of cherry powder increased, the mechanical characteristics of the pound cake did not differ significantly. The hardness tended to increase, while adhesiveness and springiness decreased with increases in powder. The retrogradation degree of pound cake prepared with cherry powder was higher than the control but there were no significant differences. For the antioxidative activity measured by DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, pound cake prepared with 10% and 15% added cherry powder showed high antioxidant activities. The pound cakes containing 10 and 15% cherry powder had acceptable sensory properties, such as flavor, taste, softness, moisture, and overall acceptability. The results exhibited that adding the cherry powder into the pound cake increased antioxidant activity with the highest quality improvement obtained by incorporating 10% (w/w) of cherry powder into the pound cake formula.

버찌분말을 첨가한 파운드케이크(0, 5, 10, 15%)를 $25^{\circ}C$에 저장하면서 10일간 품질특성을 알아보았다. 반죽의 pH는 버찌분말 첨가에 의해 감소하였으며, 파운드케이크의 굽기 손실률은 1$11.47{\sim}12.67%$로 버찌분말 첨가에 따라 증가하는 경향을 보였으나 유의적인 차이는 보이지 않았고, 높이와 비용적은 버찌분말 첨가에 따라 감소하였다. 색도는 crumb의 적색도를 제외하고, 버찌분말 첨가에 따라 crust와 crumb 모두 명도, 적색도, 황색도가 유의적으로 감소하였다. 조직감은 버찌분말 첨가에 따른 유의차는 보이지 않았으나 버찌분말 첨가에 의해 경도는 증가하는 경향을, 부착성 및 탄력성은 감소하는 경향을 나타내었다. 노화도는 무첨가구에 비해 버찌분말 첨가구에서 노화도가 높았으나 유의차는 없었다. 항산화 활성은 10% 및 15% 버찌분말 첨가구에서 높은 활성을 보였으며 관능검사 결과 색에 대한 선호도를 제외하고 10% 및 15% 첨가구에서 높은 평가를 나타내었다. 따라서 저장 동안의 품질 및 관능 특성, 기능성을 고려한 버찌분말 첨가량은 10% 첨가구가 최적 조건일 것으로 판단되었다.