• 한국식품조리과학회지
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• 제22권3호통권93호
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• pp.363-369
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• 2006

The aim of this study was to determine the optimum addition amount of waxy sorghum flour to rice flour in the preparation of Sulgidduk(waxy sorghum rice cake). The moisture content of Sulgidduk with added wary sorghum flour was $37{\sim}41%$. With increasing waxy sorghum (lour content over the range from 10% to 50%, the L-value decreased, whereas the a-and b-values increased. In the mechanical evaluation of waxy sorghum Sulgidduk, the hardness, gumminess and brittleness increased with increasing waxy sorghum flour content above 20%. The adhesiveness increased with increasing waxy sorghum flour content. The cohesiveness and springiness did not differ significantly with the addition of waxy sorghum flour. In the sensory evaluation of waxy sorghum Sulgidduk, the evaluation of the softness, moistness and chewiness was the best at 20% content. Sulgidduk made with the addition of 20% waxy sorghum flour to rice flour was found to be the best recipe in terms of overall acceptability and the sensory qualities of softness, moistness and chewiness.

• 한국식품영양학회지
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• 제32권6호
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• pp.696-700
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• 2019

In this study, sulgidduk was prepared by addition of varying amount of black doraji extract and the physicochemical quality characteristics and antioxidant activities were investigated in order to explore the commercialization potential of sulgidduk supplemented with black doraji extract. The moisture content of sulgidduck supplemented with black doraji extract exhibited a significant decrease compared to the control. The pH of sulgidduck tended to decrease with increasing concentration of black doraji extract, and the reducing sugar content increased significantly from 0.33% to 3.51%. With an increase in the content of black doraji extract, a decrease in lightness (L^⁎) and increase in redness (a^⁎) was observed. A significant increase in the total polyphenol content and antioxidant activity (DPPH and ABTS radical scavenging activity) was observed with the addition of the black doraji extract. Consequently, it is proposed that black doraji extract can be used for recipe development and commercialization of various rice cakes.

• 한국식품조리과학회지
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• 제27권1호
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• pp.101-111
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• 2011

The purpose of this study was to investigate the quality characteristics of Sulgidduck prepared with an optimal amount of parsley. The moisture content of Sulgidduk with the added parsley powder was between 40~41%. In the color measurement of parsley Sulgidduk, the results show that L-value was significantly reduced by the addition of parsley powder, a-value was the highest in the control group, and b-value was the highest with 2% parsley powder content. The pH of parsley Sulgidduk was decreased by the addition of parsley powder. The results of mechanical evaluation show that the cohesiveness and hardness of parsley Sulgidduk, were significantly increased during storage for 3 days, with an increase in the amount of parsley. In addition, springiness was significantly decreased, and chewiness increased, with an increase in the amount of parsley. Consequently, the addition of 6% parsley powder to Sulgidduk was the best formula for improving Sulgidduk in terms of sensory qualities such as color, taste, and overall acceptability.

• 한국식품조리과학회지
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• 제25권5호
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• pp.593-599
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• 2009

This study was conducted to evaluate the quality characteristics of Dureup Sulgidduk samples to different amounts of Aralia elata leaf powder. Overall the samples contained 3.73% moisture, 27.12% crude protein, 1.73% crude fat, 8.06% crude ash and 11.68% crude fiber[ED highlight - very confusing, please clarify which samples(e.g. containing which amount of powder), also, should the moisture be 37. something? It dose not fall within the range in the next sentence. Furthermore, the percentages do not add up to 100, please clarify]. The moisture levels of the samples ranged from 37.72 to 40.45%, with samples containing 0% Aralia elata leaf powder having the highest moisture level. The color L-values decreased, while the a-value increased and the b-value did not differ in response to the addition of Aralia elata powder. The texture and hardness also decreased with increasing Aralia elata leaf powder content,-; however, these values increased in all samples over three days of storage. Finally, samples containing 4% Aralia elata powder received the highest cores for color, flavor, sweetness, softness and overall-acceptability.

• 한국식품조리과학회지
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• 제30권2호
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• pp.119-128
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• 2014

The purpose of this study is to propose the optimum adding rate of freeze-drying beet leaf powder, which has antioxidant components, that have superior DPPH radical extinction effects, in the Sulgidduk, a representative of steamed rice cake, which improve its functionality. According to the measured results on moisture contents and pH levels of Sulgidduk, with added freeze-drying beet leaf powder, the moisture contents have been significantly declined with increasing rates of added beet leaf powder. The pH levels of sample groups are within the range of 6.26-6.13. From the chromatography of measured results, lightness and yellowness have declined and redness have increased along with increasing rates of added beat leaf powder. According to the texture of measured results, the hardness, and chewiness have declined by the increasing the rate of added beet leaf powder. For the storage period, hardness, and chewiness have been inclined, but cohesiveness declines, with increased the storage period, while there are no changes from elasticity. The DPPH contents of Sulgidduk, with added freeze-drying beet leaf powder, inclined by increasing the rates of added beet leaf powder. The sensory test results of color, aroma and fragrance incline with increasing rates of added beet leaf powder. From acceptance test results, the sample group added with 3% receive the highest appraisals.

• 한국식생활문화학회지
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• 제29권6호
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• pp.615-622
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• 2014

This study investigated the antioxidative properties of Yangha Buds (Zingiber Mioga R) and quality characteristics of Korean steamed-rice cake, Sulgidduk, prepared with Yangha Buds juice. Antioxidative activities were measured based on DPPH radical and ABTS radical scavenging activities, total phenol content, and total flavonoid content in Yangha Buds (water extract and juice). Sulgidduk was prepared by adding Yangha buds at concentrations of 0, 1, 2, 3, and 4% of juice. To analyze quality characteristics, proximate composition, color, texture profiles, and sensory evaluations were measured. As content of Yangha buds juice increased, L-value significantly decreased while a-value and b-value increased (p<0.05). For texture profiles, control group scored higher score for hardness as compared to groups added with Yangha buds juice. Springiness, chewiness, and adhesiveness were not significantly different among the groups. In the sensory evaluation, samples containing 3% Yangha buds juice showed better results for attitude. Based on these results, we suggest that Yangha buds are a good ingredient for increasing consumer acceptability and functionality of Sulgidduk.

• 한국식품조리과학회지
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• 제31권3호
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• pp.335-343
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• 2015

The aim of this investigation was to examine the antioxidation, physicochemical, and sensory activity of a Korean steamed-rice cake, Sulgidduk, fortified with water extracts from Moringa oleifera (M. oleifera) leaf. M. oleifera leaf extracts were added to rice powder at rations of 0.1%, 1% and 10%. To examine antioxidation properties, the scavenging activities of DPPH radicals, hydroxyl radicals, ABTS+ radicals, and ferric ion reducing antioxidant power were investigated. M. oleifera extracts significantly increased the antioxidation activities of Sulgidduk in a dose dependent manner (p<0.05). Physicochemical characteristics were measured by proximate composition, color, texture profile analysis, and sensory evaluations. As the concentration of M. oleifera leaf extracts increased, L-values and a-values significantly decreased while b-values increased. Texture profile analysis demonstrated that the control groups showed significantly higher values for hardness, cohesiveness, chewiness, and adhesiveness as compared with groups containing M. oleifera leaf extract (p<0.05). In the sensory evaluation, the sample containing 0.1% of M. oleifera leaf extract obtained the best results in overall preference. Taken together, these results suggest that M. oleifera leaf may have the potential to increase the consumer acceptability and the functionality of Sulgidduk.

• 한국식품조리과학회지
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• 제31권3호
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• pp.318-327
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• 2015

This study was conducted to investigate the physical, textural and sensory properties of Seolgiddeok prepared with different amount of radish leaf powder, and stored for 3 days. The moisture content decreased gradually during storage and the decrease was less in the groups with radish leaf powder than in the control. The color L value decreased significantly as the amount of radish leaf powder increased, while the redness (a) and yellowness (b) both increased. Measurements with a texture analyzer, showed that the hardness, chewiness, gumminess and adhesiveness of Seolgiddeok tended to decrease in proportion to the amount of radish leaf powder in the formula. The gelatinization properties of Seolgiddeok were investigated by amylograph. Breakdown and setback in Seolgiddeok were low following the addition of radish leaf powder. In the sensory evaluation, Seolgiddeok with radish leaf powder was superior in flavor, chewiness, and softness than the control. Seolgiddeok with 3% radish leaf powder had the highest overall acceptability score. Therefore, we concluded that the addition of radish leaf powder to Seolgiddeok improves the sensory characteristics and delays retrogradation.

• 한국식품조리과학회지
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• 제30권5호
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• pp.517-525
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• 2014

The purpose of this study was to identify appropriate sweeteners that could improve the dryness, while reducing calorie by adding various sweeteners to Sulgitteok using dry non-glutinous rice flour. Of six sweeteners (sucrose, trehalose, honey, acesulfame K, oligosaccharide, and erythritol) added, Sulgitteok with acesulfame K had the highest moisture content, whereas Sulgitteok with trehalose had the lowest moisture content. The moisture content of all samples were decreased when storage period was increased except the sample added with trehalose. Sulgitteok with erythritol had the highest L-value, whereas Sulgitteok with oligosaccharide had the lowest L-value. The L-value and b-value of Sulgitteok samples decreased when storage period was increased. Sulgitteok with trehalose had the highest hardness, whereas Sulgitteok with oligosaccharide had the lowest hardness. The hardness increased in all samples when storage period was increased. Sulgitteok sweetened with acesulfame K and honey had the highest acceptance.

• 한국식품조리과학회지
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• 제29권5호
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• pp.501-509
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• 2013

This study shows the quality changes of Sulgidduk added Cheonnyuncho fruit powder during storage. Sulgidduk was prepared with freeze-dried Cheonnyuncho, rice flour, sugar syrup and salt. The Sulgidduk, which was made with various amounts (0,3,6,9,12%) of added Cheonnyuncho, was examined by the quality of duration during storage. The pH of Cheonnyuncho Sulgidduk decreased as the amounts of Cheonnyuncho fruit powder increased, and also showed a significant decrease as the storage increased. As the amounts of Cheonnyuncho fruit powder increased, lightness (L) decreased while redness (a) and yellowness (b) increased. During the storage period, the lightness (L) and yellowness (b) were increased, but redness (a) was decreased. In the texture profile analysis, the hardness and springiness were decreased with increasing Cheonnyuncho fruit powder, whereas cohesiveness, gumminess and brittleness were increased. However, the tendency of the changes of characteristics during storage was opposite except for springiness. In conclusion, it is suitable to extend the storage period of Sulgidduk added Cheonnyuncho fruit powder.