• Journal of the East Asian Society of Dietary Life
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• v.10 no.6
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• pp.514-521
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• 2000

This study was induced to compare retrogradation and gelatinization in sulgie with added powder and flower of gamkug, which had been stored in 4$^{\circ}C$, 1$0^{\circ}C$ and 3$0^{\circ}C$, respectively. The addition of 5% powdered gamkug showed the highest degree of gelatinization while the control did the lowest. The degree of hardness of gamkugsulgie was lower than control and the following order 4$^{\circ}C$>1$0^{\circ}C$>3$0^{\circ}C$. Gamkugsulgie showed a little lower degree of retrogradation than control group. The degree of retrogradation at 4$^{\circ}C$ was far greater comparing with the other group. The degree of retrogradation were delayed as the storing temperature rose tran 4$^{\circ}C$ to 3$0^{\circ}C$, temperature namely, gamkugsulgie retrogradation time constant of the test group was slower 1.18 times at 4$^{\circ}C$. 1.24 times at 1$0^{\circ}C$ and 2.58 times at 3$0^{\circ}C$ than that of the control group.

• Journal of the East Asian Society of Dietary Life
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• v.8 no.3
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• pp.289-296
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• 1998

The quality of physical characteristics were measured, using sensory evaluation and mechanical characteristics where different percentages of chrysanthemums (0%, chrysanthemum indicum power: 1%, 3% and 5%, and Chrysanthemum indicum petals: 1%, 3% and 5%) were added to rice flour, to promote the use of and liking forrice cakes that are a kind of Korean traditional foods. In the sensory evaluation, the color appeared to be the highest when 3% of Chrysanthemum indicum petals was added, and there was a significant difference between the samples used(p<.01). It was also shown that the taste was generally higher in steamed, Gamkugsulgie-dduk added Chrysanthemum indicum than those in which no Chrysanthemum indicum were added, and that it appeared to be the highest, particularly, in rice cakes that 3% of Chrysanthemum indicum petals. However there was no significant difference between the samples. The Chewiness was the highest in rice cakes to Which 3% of Chrysanthemum indicum petals was added but there was no significant difference between the samples. The after-swallow feeling and overall quality were the highest in rice cakes to which 3% of Chrysanthemum indicum petals(p<.01), and there was a significant difference between the samples(p<.01). In terms of change in color, the value of lightness was the highest in rice cakes to which no Chrysanthemum were added. The more the content of Chrysanthemums, the lower the value of lightness but the higher the values of red color(a) and yellow color(b). In the measurement of the texture, using a mechanical characteristics, the springiness was the highest in rice cakes to which 5% of Chrysanthemum indicum powder was added, and the gumminess, hardness and chewiness appeared to be high in rice cakes to which 5% of Chrysanthemum indicum petals was added. In the correlation between the sensory evaluation and mechanical characteristics, the higher the softness, the lower the value of lightness. The softness in the sensory evaluation showed a positive correlation with the values of red color(a) and yellow color(b) in the color test. the chewiness in the sensory evaluation showed a negative correlation with the springness in the mechanical characteristics. In view of the results stated above, a good recipe for steamed, Gamkugsulgie-dduk appeared that the contents of the ingredients used were 291g of rice flour, 9g of Chrysanthemum indicum petals(3% of rice flour) , 30g of sugar, and 3g of sat, 60ml of water.