• Journal of the Korean Society of Food Culture
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• v.27 no.1
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• pp.82-88
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• 2012

In this study, the effects of yacon (Smallanthus sonchifolius) leaf on the quality characteristics of cookies were examined. In order to investigate its effects, four different amounts (0%: Control, Y-0.5, Y-1.0, Y-1.5) of yacon leaf powder were added to the cookie dough. Among the physicochemical and sensory characteristics, the density and pH of the dough, spread factor, color value, firmness, consumer acceptability, and Pearson's correlation coefficients were measured. Although there was no significant difference in pH of the doughs among the groups, density significantly decreased with increasing amount of yacon leaf powder (p<0.05). While the L, a, b values, and hardness decreased significantly, DPPH free radical scavenging activity increased significantly as the content of yacon leaf powder increased (p<0.05). Overall acceptability, appearance, taste, and texture between the control and Y-0.5 groups showed no significant differences. This study suggests the possibility of yacon leaf as an ingredient that increases the functionality of cookies.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.3
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• pp.325-330
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• 2011

The results from quality measurements of Angake sauce are as followings. The content of solids increased depending on the quantity of added starch. The pH increased with the quantity of added starch, but did not show significant changes. The viscosity increased as the quantity of added starch increased. The preference was the highest for the group with 6% added starch, and preference was shown in order of 6% > 7% > 5% > 8% > 4%. The addition of 6~7% starch to Angake sauce is considered to be most appropriate.

• Korean journal of food and cookery science
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• v.24 no.2
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• pp.266-271
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• 2008

In this study, Jeolpyon(imprinted with flow patterns) was prepared with different amount of added Astragalus membranaceu extracts(0%, 3%, 6%, 9% and l2%)and then the quality and sensory characteristic effects were examined. All togather the chemical composition of the samples was as follows: $53.l2{\pm}0.04%$ of moisture, $l4.43{\pm}0.05$ crude protein, $7.6l{\pm}0.11%$ crude fat, and $21.35{\pm}0.09%$ crude ash. Hardness and cohesiveness significantly increased(p <0.001), and springiness, chewiness and adhesiveness decreased, with increasing amounts of Astragalus membranaceus extract. In the chromaticity analysis, the L-value(brightness)significantly decreased with increasing Astragalus membranaceus extract content, and the b-value(yellowness) increased in direct proportion to the extract content. Finally, in the sensory evaluation, the Jeolpyon containing 9.0% extract received the highest overall preference scores.

• Journal of the East Asian Society of Dietary Life
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• v.19 no.2
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• pp.247-255
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• 2009

This study examined the quality characteristics of brown sauce prepared with rice powder in place of wheat flour, which is the commonly used thickener. With regard to the general components, as the level of rice powder increased and its ratio in the stock increased, moisture decreased and crude protein, lipid, and ash increased. Reducing sugar content was 4.72% in the control group, and as the mixing ratio of stock to rice powder increased from 100:5 (S1) to 100:13 (S5) in the rice powder-added groups, reducing sugar content increased from 3.94% to 4.82%, respectively. In terms of Hunter's color values, as more rice power was added to the beurre mani$\acute{e}$, L, a, and b values increased. Thus, a sauce of a light brown color was appropriately made. For consistency, as more rice powder beurre mani? was inserted into the analyzer, flow was reduced and viscosity significantly increased. The pH of the control (CS) was 4.94, and there were no significant differences between the control and the rice powder-added groups. In sensory evaluations, color presented its highest score as 6.47 when the mixing ratio of stock to beurre mani$\acute{e}$ was 100:7 (S2). S2 also received the highest score for flavor at 6.32. Viscosity was highest in the control (CS) at 6.26, and was not significantly different from the 100:7 (S2) or 100:9 (S3) groups. Finally, the S2 group had the highest scores for taste (6.21) and overall-acceptability (6.30). In correlation analyses between the sensory characteristics, overall-acceptability as well as the color, flavor, viscosity, and taste of the brown sauce all presented comparatively high positive correlations, in which overall-acceptability and color had the highest correlation.

• Korean journal of food and cookery science
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• v.24 no.3
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• pp.333-339
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• 2008

The aim of this study was to determine the optimal amount of paprika to add to rice flour in the preparation of paprika Sulgidduk. The moisture content of paprika Sulgidduk with paprika was found to be 39-43%. With increasing additions of paprika, the L-value was reduced, and the a- and b-values were increased. The pH was increased with the addition of paprika. In the mechanical evaluation of paprika Sulgidduk, the hardness of the 12% paprika Sulgidduk was the lowest during storage. The cohesiveness of the 12% paprika Sulgidduk was the highest during storage. The springiness and adhesiveness evidenced little difference among the different paprika levels assessed. Gumminess and chewiness were both at a maximum at a level of 3%. In the sensory evaluation of paprika Sulgidduk, the color, sweetness, moistness, and chewiness characteristics were considered optimal at a level of 9%. Consequently, Paprika Sulgidduk with the addition of 9% paprika to rice flour was determined to be the best recipe with regard to the sensory qualities of color, sweetness, moistness, chewiness, and overall acceptability.

• Journal of the Korean Dietetic Association
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• v.14 no.2
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• pp.114-126
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• 2008

The purpose of this study was to gauge customers' satisfaction with the hospital, university, factory, and office foodservices from a contracted provider. Importance-performance analysis (IPA) evaluations were conducted. Questionnaires were returned from 1,808 customers in 46 foodservice locations. The average total scores of the importance and performance of seventeen quality characteristics were 4.14 and 3.23, respectively, on 5-point scales. The average total score of gap (gap = performance - importance) was -0.92. Analysis of significant difference according to the type of foodservices revealed that, hospital foodservices had more items with significant high scores than those of other groups in the average total scores concerning importance (p<0.01) and performance (p<0.01). The average total scores of gap showed no significant difference. Significant differences were evident in the food and personal service dimensions, and the scores of hospital foodservices trended significantly higher than those of other groups. Importance-performance analysis (IPA) analyses for hospital foodservice implicate 'variety of menu', 'cleanness of dishes', and 'taste of food' as items requiring prompt attention and improvement.

• Korean journal of food and cookery science
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• v.26 no.4
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• pp.428-433
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• 2010

The aim of this research was to determine the relationship between quality of puffer fish and soak time in maturing water. This research used the cutting cranial nerve method, which is called the MSK method. The data was analyzed using the SPSS program. Based on salinity analysis result, both moisture content and pH were measured after 20 min of soaking. As the salinity of the maturing water increased, the moisture content initially decreased then increased once the salinity was greater than 3%. However, the concentration of the maturing water did not influence the pH level. The texture properties were measured to assess the effect of soak time in the maturing water. Hardness of the sample was highest (3.99) at 20 min, and cohesiveness also showed a maximum value (0.26) at 20 min. Gumminess and chewiness were highest 1.04 and 4.09, respectively, when the fish was matured for 20 min. Sensory properties were evaluated, and springiness, umami flavor, texture, and overall preference were highest at 20 min of soak time. The results showed that maturing the puffer fish for 20 min provided the best quality of texture and sensory characteristics for the fish.

• Journal of the Korean Society of Food Culture
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• v.34 no.1
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• pp.61-67
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• 2019

This study examined the quality characteristics of dumpling shells prepared with 0, 2, 4, 6, and 8% mulberry leaf powder. According to the amylograph data, the composite of mulberry leaf powder-wheat flour samples reduced the gelatinization temperatures, viscosities at $95^{\circ}C$, and maximum viscosity with increasing mulberry leaf powder content. The lightness (L) and redness (a) values decreased with increasing mulberry leaf powder content, whereas the yellowness (b) value increased. In addition, the weight, volume, and turbidity increased after cooking. In terms of the textural characteristics, addition of mulberry leaf powder increased the hardness, springiness, cohesiveness, chewiness, and adhesiveness. The DPPH free radical scavenging activity of the dumpling shells increased significantly (p<0.05) with increasing levels of mulberry leaf powder. The taste, chewiness and texture of the dumpling shells prepared with added 4% mulberry leaf powder were preferred. The sensory evaluation showed that the overall preference of the dumpling shell with the addition of 4% mulberry leaf powder was more effective than the control.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.6
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• pp.905-910
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• 2011

Cookies were prepared using different fat: butter, margarine, and shortening. Density, specific gravity of the dough, moisture content, spreadability, color, texture, and sensory evaluation for each cookies were conducted. Density, specific gravity and moisture content of each cookies showed the highest value with butter dough, and the lowest value with shortening dough. Spreadability of the cookie with margarine was the highest, and the cookie with butter and shortening resulted lower than that. The chromaticity 'L' and 'b' with butter cookie appeared the highest value, and margarine cookie and shortening cookie were followed that result. But chromaticity 'a' of butter cookie showed the lowest result while margarine cookie, and shortening cookie showed the highest value. Overall sensory evaluation showed high preference for butter cookie, beside margarine cookie and shortening cookie showed lower preference. Butter cookie was preferred in hardness, brittleness, color and chewiness, over margarine or shortening cookie. Flavor and sweetness with margarine cookie was preferred rather than butter cookie and shortening cookie. Softness and fatty taste of shortening cookie showed the highest result, beside margarine cookie and butter cookie showed lower result.

• Journal of the Korean Society of Food Culture
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• v.26 no.4
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• pp.394-399
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• 2011

This study was conducted to investigate the effect of Nelumbo nucifera G. (NN) powder on cookie quality characteristics. The cookies were made with various NN powder levels (1, 3, and 5%). Crude fiber, crude ash, and the Mg contents of cookies with added NN powder were higher in concentration than those of the control group. Salinity of NN-powder added groups was not significantly different when it was compared with the control group's salinity. No significant difference among the groups were observed for specific volume, but the width determined by water content in the dough decreased as the amount of added NN powder increased. The L-value of the cookies was significantly larger than that of the control group. The a- and b-values were the highest for the 5% substituted NN flour. According to the sensory evaluation of the cookies, scores for color, flavor, and texture increased with increasing amounts of added NN powder. The overall acceptance of the 3% NN added cookies was greater than that of the 1 and 5% cookies.