• Journal of the East Asian Society of Dietary Life
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• v.13 no.3
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• pp.197-215
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• 2003

This study was carried out to investigate the effects of added emulsifier and enzyme on the quality characteristics of Seolgiddeok with black rice powder, green tea powder, Lentines edodes powder, pumpkin powder during storage. Samlpes were divided into two groups, the emulsifier-enzyme added group and the control, and stored fur 4 days at 2$0^{\circ}C$. Moisture content was measured by the air oven method; the Hunter's cole. values by Lightness (L), redness (a), yellowness (b) value; the degree of gelatinization by the enzyme digestion method, and expressed as glucose content by Somogi-Nelson method. The degree of retrogradation was calculated as the retrogradation rate using the degree of gelatinization value, and total cell and mold counts were also measured. Texture and sensory characteristics were also investigated. The results are as follows: The emulsifier-enzyme group was significantly different from the control from each examination and the retrogradation of pumpkin Seolgiddeok with emulsifier-enzyme was delayed the most among samples tested.

• Korean journal of food and cookery science
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• v.22 no.5 s.95
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• pp.650-658
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• 2006

This study investigated the effects on the quality characteristics of the korean steamed rice cake, Seolgiddok of the addition of aloe powder at 0%, 1.5%, 3.0%, 4.5% and 6.0% and 4-days storage. The moisture content of the control 0% aloe, steamed rice cake was 47.76%, and steadily decreased with increasing powder addition to the lowest of 37.38% for the cake with 6.0% added. The moisture content was decreased with extending storage time in both the control and powder-added groups. The cohesiveness, springiness, adhesiveness, gumminess and chewiness of the cake tended to decrease with increasing powder content, while the hardness increased with both increasing powder content and extending storage time. The Hunter color value L in the chromaticity of the cake was significantly decreased with increasing powder addition. The a value of the control, 0% aloe steamed cake was -0.86, but became positive with red color with increasing powder content, The b value was significantly increased with increasing powder content. The powder addition inhibited the increase in bacteria number. The sensory characteristics of the cake. such as color, aloe flavor and taste, and bitterness were increased with increasing powder content, while the moist and soft feeling of the cake were more highly evaluated at lower powder content. The overall taste was judged to be best for the sample with 3% added powder. Accordingly, it was expected that a highly functional and healthy product with improved quality might be developed by the addition of aloe powder to the Korean steamed cake, Seolgiddok.