• Mycobiology
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• 제42권4호
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• pp.353-360
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• 2014

Makgeolli is a traditional Korean alcoholic beverage. The flavor of makgeolli is primarily determined by metabolic products such as free sugars, amino acids, organic acids, and aromatic compounds, which are produced during the fermentation of raw materials by molds and yeasts present in nuruk, a Korean fermentation starter. In this study, makgeolli was brewed using the wild yeast strain Saccharomyces cerevisiae Y98-5, and temporal changes in the metabolites during fermentation were analyzed by ultra-high-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry. The resultant data were analyzed by partial least squares-discriminant analysis (PLS-DA). Various metabolites, including amino acids, organic acids, sugar alcohols, small peptides, and nucleosides, were obviously altered by increasing the fermentation period. Changes in these metabolites allowed us to distinguish among makgeolli samples with different fermentation periods (1, 2, 3, 6, 7, and 8 days) on a PLS-DA score plot. In the makgeolli brewed in this study, the amounts of tyrosine ($463.13{\mu}g/mL$) and leucine ($362.77{\mu}g/mL$) were high. Therefore, our results indicate that monitoring the changes in metabolites during makgeolli fermentation might be important for brewing makgeolli with good nutritional quality.

• 한국식품조리과학회지
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• 제31권6호
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• pp.733-740
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• 2015

This study was performed to examine the functional and quality characteristics of rice cookies with added Ligularia fischeri (Ledeb.) Turcz. powder. Rice cookies were prepared with different amounts (0%, 0.5%, 1%, 1.5% and 2% to the flour quantity) of Ligularia fischeri powder. The antioxidant activities of Ligularia fischeri powder, specifically the total phenolic content, DPPH free radical scavenging activity and reducing power were found to be 212.19 mg GAE/g, $11.78{\mu}g/mL$11.78 ($IC_{50}$), and 2.33 (O.D.), respectively. The antioxidant activities of the rice cookies with added Ligularia fischeri powder increased with increasing concentrations of Ligularia fischeri powder. Regarding the hunter's color value of rice cookies with added Ligularia fischeri powder, L (lightness) and a (redness) values decreased (p<0.001) with increasing concentrations of Ligularia fischeri powder, whereas b (yellowness) values increased (p<0.01). The consumer acceptability score for the 3% Ligularia fischeri rice cookie groups ranked significantly (p<0.001) higher than the other groups in color, flavor, taste, texture and overall preference. These results suggest that Ligularia fischeri powder will be useful as a functional food resource with antioxidant activities.

• Journal of Applied Biological Chemistry
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• 제42권4호
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• pp.175-179
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• 1999

Grape seed oil was extracted using different preparatory treatments as follows: (1) grinding, (2) grinding and roasting, (3) grinding and wet- roasting, (4) grinding, roasting, and wet-roasting, and (5) grinding, wet-roasting, and wet-roasting. The highest antioxidant activity was obtained from the sample with the method (2). Initial states of oxidation were similar except method (1) that showed more oxidized state, being P.O.V.8. Acid values were observed in the range from 1.42 to 1.89. The lowest acid value was found as 1.42 in method (1) and those of others were somewhat higher, indicating that heating process of roasting produced some free fatty acids. From the results of sensory evaluation, the best odor and taste were obtained from the methods (2) and (3). Repetitive procedure of wet-roasting, like method 5, caused some loss of flavor components and decrease in the sensory evaluation score. Addition of grape seed oil (method 2) to soybean and perilla oil at the level of 20% retained considerable antioxidant activities as much as 4.3 and 5 times, respectively, than 100% soybean or perilla oil stored for 12 weeks. When soybean or perilla oil was mixed with 20% grape seed oils, P.O.V. decreased to half of that of unmixed oils.

• 동아시아식생활학회지
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• 제13권4호
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• pp.313-317
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• 2003

Damdusi was a kind of fermented soybean food added with ginger and sancho(Zanthoxylum schinifolium). To improve the preparing method of Damdusi, Asperillus oryzae was inoculated at steamed soybean and fermented at 25~3$0^{\circ}C$ incubator far 48 hours. Salt, ginger and sancho was mixed into it after 1st fermentation, and the 2nd fermentation was also done at 30~37$^{\circ}C$ for 1 week. After drying under the sun, sancho was removed from it. Dried Damdusi was composed of 4.90% of moisture, 35.07% of crude ash, 13.61% of crude fat and 23.44% of crude protein, respectively. Its flavor earned the high score(3.94) but taste did not (2.98) due to the salty taste by the sensory evaluation. Therefore, salt ratio was reduced to 18%, 16%, and 14% for improving the taste. The one with 14% salt concentration had the highest crude ash and crude fat but the lowest crude protein composition. The crude protein was the highest in the group of 16% salt. By the sensory evaluation, the taste and the overall acceptability was the highest in the 14% salt group.

• 동아시아식생활학회지
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• 제17권6호
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• pp.876-882
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• 2007

The purpose of this study was to investigate the effects of basil on the quality characteristics of tomato sauce, which is used widely in Western cuisine. The highest pH of 4.29 was observed in the tomato sauce with 4% fresh basil added, while the tomato sauce with 0% fresh basil exhibited the lowest pH of 4.20. The pH of the tomato sauce gradually increased with the addition of fresh basil. The analysis of color differences in the tomato sauce indicated that redness(avalue) decreased with the addition of basil;, whereas consistency and spreadability increased with the increasing amounts of the fresh basil. The sensory evaluation was performed with scoring tests for color, flavor, taste, after taste, viscosity, and overall acceptability by 15 professional panelsists. The tomato sauce with 2% basil showed the best score in the sensory evaluation, except for vicosity. From the above results, the data suggest that an addition of 2% fresh basil to tomato sauce is recommended for commercial use.

• 한국식품저장유통학회지
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• 제4권2호
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• pp.147-153
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• 1997

Oriental melon has been increased in production amount, but its processed food was not made in spite of the fact that shelf-life of the fresh fruit is short. This study was carried out to develop a dried product with no use sulfur treatment. Fresh melons were peeled, cut into 6 pieces, and soaked to the following pretreatments soaking in sugar syrup(SS), sodium chloride(SC), ascorbic acid(AA) and sodium polyphosphate(SP). After preatreatments the melon pieces were dried by hot air drying at 5$0^{\circ}C$ for 9 and 12 hours, and the dried melons were air blown at $25^{\circ}C$ for 1 day. The dried samples were evaluated for moisture content, texture, rotor, and sensory quality. The moisture content of dried melons soaked in SS and SC were lower than those that were soaked in AA and SP after hot air drying. The melons dried for 12 hours were high in hardness, gumminess, chewness and adhesiveness and excellent in sensory evaluation compared to 9 hours. The "L" value of SS was higher and the "a" value was lower in Hunter color. And SS treatment inhibited browning of the dried melon and improved sensory characteristics in color, flavor, texture and taste. Sucrose concentration had no significant effect on color, hardness and sensory score in banal product. The combination of SS with SP represented a highly effective antibrowning treatment for the dried melon and the product was kept in good color for 3 months at room temperature.at room temperature.

• 대한가정학회지
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• 제34권2호
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• pp.329-339
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• 1996

The purpose of this study was to investigate effect of the amounts of unpolished glutinous rice flour with green tea powder difference of adding amount on the sensory and objective characteristics of Heunmi-nokcha-injulmi which is KOREAN TRADITIONAL RICE CAKE supplemented with green tea. The results were as follow : According to sensory evaluation of Heunmi-injulmi, the score of the color, flavor, chewiness, and overall of adding green tea were higher than those of no-adding green tea, especially the best acceptance was shown in adding 2% green tea. The more the amount of green tea powder was increased, the more the hardness and gumminess of Heumni-injulme was increased in the textural profiles, whereas the cohesiveness and elasicity of those was decreased. The moisture content of Heunmi-injulme adding green tea powder was ranged to 42-45%, and it was increased as the amount of green tea powder be increased. The more the amount of adding green tea powder was increased, the more yellow and green color was changed darker and stronger. Refer to this study with the advisable recipe for as follow : Heunmi-nokcha-injulmi adding 294g(98%) unpolished glutinous rice flour and 6g(2%) green tea powder.

• 한국조리학회지
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• 제23권7호
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• pp.176-182
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• 2017

This study evaluated th physicochemical and sensory characteristics of teriyaki sauce added with bitter melon (Momoridaica charantia L.) roasting powder. Teriyaki sauce containing Momoridaica charantia L. roasting powder at concentration of 0% (control), 2% (RMT2), 4% (RMT4), 6% (RMT6), 8% (RMT8). Color of teriyaki sauce added with Momoridaica charantia L. roasting powder were lower than the control. The pH of the sauce ranged from $4.31{\pm}0.01{\sim}4.87{\pm}0.01$. As the amount of added Momoridaica charantia L. roasting powder was increased, total soluble solid content and viscosity of teriyaki sauce increased. DPPH and ABTS radical scavenging activities of Momoridaica charantia L. added teriyaki sauce increased. The sensory evaluation was performed with scoring test s for color, flavor, taste, bitter taste, and overall acceptability by 50 professional panelists. In sensory evaluation, teriyaki sauce added with 4% Momoridaica charantia L. roasting powder concentrate high score in sensory preference. Based on the results, 4% should be recommended as the optimum level of Momoridaica charantia L. roasting powder concentrate to be added for the preparation of teriyaki sauce.

• 한국지역사회생활과학회지
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• 제16권2호
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• pp.17-26
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• 2005

This study was conducted to investigate the usefulness of a hot water extract of licorice root as a source for production of healthy food. The electron donating capacity of the hot water extract of licorice root was very strong. This activity decreased by $6.9\%$ after keeping it in 5 days of cold storage, but it was not significantly different. Ten types of licorice jellies were prepared, using agar, agar-pectin, agar-cellulose, 2 different proportions of agar-pectin-cellulose as a gelling agent, and 2 levels of sugar. Among the 5 jellies containing $10\%$ sugar, the elasticity and overall acceptance of the agar jelly obtained the highest sensory score, but the color and flavor were not affected by the type of gelling agents. As the sugar concentration increased to $15\%$, the elasticity of the agar jelly was also evaluated as being the best one among the 5 jellies, but the overall acceptance was not significantly different from the others.

• 동아시아식생활학회지
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• 제17권2호
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• pp.219-226
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• 2007

This study was conducted to compare the quality of steamed cakes supplemented with common buckwheat(F. esculentum Miench.) and tartary buckwheat(F. tartaricum Gaetn). A proximate analysis, and rutin content, color value, texture characteristics and sensory evaluations were performed, In the proximate analysis, the steamed buckwheat as opposed to raw buckwheat, appeared to afford higher values for most of the evaluated items. The rutin content of the tartary buckwheat was over 14 times higher than that of common buckwheat and remained about 58% higher after steaming. The lightness of the steamed cakes was in the following order: control(wheat flour only), with the addition of common buckwheat, and with the addition of tartary buckwheat. The redness and yellowness increased in the following order: tartary buckwheat, common buckwheat, control steamed cake. There were no significant differences in the springiness of steamed cake between the various samples including the control: therefore, resulted in good quality during bread-making. In the sensory evaluation, on increasing the amount of tartary buckwheat addition the score for entire taste increased compared with common buckwheat and the control and also had positive results for all other items, including flavor, color, softness and moistness. This study has suggested the ability to make steamed cakes containing tartary buckwheat flour.