• Journal of the East Asian Society of Dietary Life
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• v.26 no.4
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• pp.346-358
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• 2016

Local food reflects the identity and image of a specific region. It is also a core element for determining tourists' experience of a region. The purpose of the present study was to develop a Jeju food tour package using local foods and estimate the economic value of the suggested tour package using Contingent Valuation Method (CVM). Five food tour packages were developed by researchers. In order to modify and measure the value of each package, an expert panel survey was conducted, and 'package 5' was selected as a food tour scenario for the tourist survey. A survey was conducted on 295 domestic tourists who visited Jeju within the past 10 years in order to evaluate the economic value and feasibility of the Jeju food tour package. A total fo 72.9% of respondents answered that they were willing to pay for the Jeju local food tour, and the willingness to pay (WTP) range was between ￦45,000 and ￦105,000. The primary factors correlated with WTP was food expenses, followed by leisure experience expenses, interest in local foods, education level, visit frequency and age. The WTP of the Jeju local food tour was calculated with the significantly affected factors using stepwise regression model. The result of the present study reveal that tourists' WTP increased with higher food expenses, education level, and age group. The average value of food expenses, education level, and age were substituted into the formula derived from the regression analysis, yielding 58,385.752 KRW as the WTP. The expected economic value created by exploiting the Jeju local food tour was shown to be 700 billion KRW per year, calculated by multiplying WTP of the food tour packages by the number of tourists. This study examined the feasibility and plan of the food tour package to increase the economic value of Jeju local food. In the case of the culinary tour program based on Jeju local food launching, the estimated economic effect was great. Therefore, in-depth research to merchandise the Jeju local food tour program is needed.

• Preventive Nutrition and Food Science
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• v.7 no.4
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• pp.427-431
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• 2002

Alkali treatment following acidic hydrolysis (ATAH) is a commonly used practice for reducing the levels of monochloropropanediol in commercial Korean soy sauce. This study investigated the chemical compounds produced in commercial Korean soy sauce made by ATAB. The levels of amino-N, total acidity, pH, salinity and Brix of the soy sauce were 6.66%, 2.52%, 19.81%, 4.57 and 35.01, respectively. The major fatty acids were C18:2n-6, C16:0, Cl8:ln-9 and C18:3n-6. The concentration of polyunsaturated fatty acids were especially high, with of C18:2n-6 (49.8%) being the highest followed by C18:3n-6 (3.8%) and C18:3n-3 (2.4%) in that order. Among the non-volatile organic acids, the concentration of levulinic acid (1,206.28 mg/100 g) was the highest, while the taste value of citric acid was the highest. Among the ATP related compounds, IMP concentration (31.19 mg/100 g) was highest followed by AMP, hypoxanthine and GMP in that order. The concentrations of free and total amino acids in soy sauce were 6,136.94 mg/100 g and 8,702.76 mg/100 g, respectively. On the other hand, the taste value of glutamic acid, a major amino acid flavor determinant in soy sauce, was highest of all the amino acids, which is desirable since most free amino acids such as methionine, histidine and phenylalanine have a bitter taste that detracts from the flavor of soy sauce.

• Journal of the Korean Society of Food Science and Nutrition
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• v.19 no.4
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• pp.356-374
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• 1990

This paper proposes to research on the actual conditions of dietary life of some children with similar living standard. They were in the 4th and 5th grades of two elementary schools located at Tongrae-ku Pusan City and the survey period was from March to April in 1989. One part was 0 elementary school childern with school lunch and the other part was ones in K elementary school without school lunch. This survey shows the effect of nutrition education of school lunch on the intake of food and nutrient the pattern of food consumption and untrient intake and the knowledge level of nutrition and results in calling attention to the importance of school lunch and the necessity f its expanded paractice and bringing up some problems to be solved in order to excute more improved program of school lunch. As the results of analysis first the school lunch group demonstrated desirable pattern of food consumption and nutrient intake school lunch aims at by the effect of nutritional education of the scheduled school lunch program and turned out to be superior in food and nutrient intake. physical index and level of nutrient knowledte to the non school lunch group. Secondly since both groups show the lack of calcium intake it is necessary to establish a meal plan to increase calcium source and in order to improve the quality of school lunch it is desirable to plan a program considering proper amount of meal service by age and sex selection of menu based on preference research various cooking methods and and food mixing fit for standard food consitiution of school lunch.

• Journal of the Korean Society of Food Culture
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• v.17 no.3
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• pp.267-274
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• 2002

The quality characteristics of traditional Kyungsangdo Myungtae (Alaska pollack) sikhae including optimal composition of the product were investigated. In the sensory evaluation, the Myungtae sikhae made from Gampo accepted to be best for traditional Kyungsangdo Myungtae sikhae and it is called standard sikhae. The standard sikhae was prepared as follows: dried-Myungtae 200g, cooked rice 230g, red pepper 92g, garlic 112g, ginger 100g, radish 1.6kg, salt 20g, and malt meal 65g. The Myungtae sikhae made from Gampo showed higher values in total sugar, free reducing sugar, and nitrogen compounds than the Myungtae sikhae made from another locations. The sugar of standard sikhae consisted of four kinds including glucose. And, the contents of free amino acid was increased in the order of glutamic acid, alanine, and methionine. The composition of free amino acid in Myungtae sikhae contained 17 kinds, and the contents was increased in order of glutamic acid, aspartic acid, and proline. The organic acid of standard Myungtae sikhae consisted of 7 kinds including lactic acid during fermentation. The contents of citric acid, succinic acid, and lactic acid gradually increased during fermentation, and especially, increasing of lactic acid remarkably increased than the different organic acid.

• Korean journal of food and cookery science
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• v.33 no.3
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• pp.292-299
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• 2017

Purpose: The present study explored cookie making performance using Jeju magma seawater to elucidate the effects of minerals in water on quality of baked goods. Methods: Seven water samples were analyzed for their mineral content, pH and water hardness. Starch pasting properties of flour in water samples was analyzed using RVA, and cookie making performance using water samples was evaluated with the AACCI wire-cut cookie baking method. Quality of cookies was measured by weight loss during baking, cookie geometry, color, and firmness. Results: Hardness of water samples ranged from 0-4200, and mineral content was in the order of magma seawater > 100% ED mineral water > 50% ED mineral water > 10% ED mineral water > tap water > Samdasoo > distilled water. RVA results showed that water hardness exhibited significant relationships with pasting temperature (p<0.05, R=0.863), peak viscosity (p<0.001, R=0.944), final viscosity (p<0.05, R=0.861), and setback (p<0.05, R=0.782). Cookie baking results showed that cookie diameter increased in the order of magma seawater < 100% ED mineral water < 50% ED mineral water < 10% ED mineral water $\approx$ tap water < Samdasoo < distilled water. Conclusion: As mineral content in water increased, flour pasting temperature and viscosity increased, whereas cookie diameter decreased with color fading. However, cookies formulated with 50% ED mineral water showed similar cookie geometry and texture to those with tap water. Therefore, controlling the mineral content of water can be successfully applied to produce mineral-enriched cookies.

• Korean Journal of Community Nutrition
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• v.9 no.4
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• pp.453-463
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• 2004

In order to investigate food purchase frequency of elementary school children and its related ecological factors, 431 4th, 5th and 6th grade elementary school children and their mothers, living in Seoul and Daejon, small city and rural area of Chungnam Province, were participated in this study. The subjects and their parents were surveyed by a self-recording questionnaire about food purchase frequency and some ecological factors. Average height and weight of the subjects by gender and grade were similar to or a little bit more than the 1998 Korean Growth Standard. According to relative body weight, 30.6% and 10.8% of the subjects belonged to under-weight and obesity categories, respectively. Of the subjects, 46.9% used PC telecommunication or internet, 53.8% of them used it for less than an hour per day, and 46.4% watched TV for 2 to 4 hours a day. About 42% of the subjects spent 500 Won or less daily to buy snacks. A half of the subjects took snacks once a day because of hunger. Mothers' nutrition knowledge score was averagely 8.16 out of 13 full score and the average attitude score was 43.22 out of 50 full score. Foods purchased more than once a week were milk and yoghurt, cookies, ice-cream, ramyun, and gum in order. Family income, parents' education level, mothers' nutrition knowledge and food attitude score, students' snacking frequency and TV watching time showed significant correlations with purchase frequencies of some individual food items. In conclusion, the elementary school children considered taste most important rather than nutrition in buying snacks and most frequently bought carbohydrate foods and concentrated sugars except milk. Ecological factors such as mothers' nutritional knowledge and food attitude, TV watching time and snacking frequency had influenced the children's food purchase frequency. Accordingly, it is necessary to educate both children and their mothers about good food purchase and the importance of snacking.

• Journal of the Korean Dietetic Association
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• v.25 no.1
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• pp.17-29
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• 2019

This study examined sanitary education and performance of sanitary management among employees related to cooking in school food services in Sejong. A total of 193 subjects (19.2% for kindergarten, 42.5% for elementary school, and 38.3% for middle and high school) participated in this questionnaire survey. The frequency of sanitary education was highest at 63.7% once a month, and it was higher in the order of middle and high school, elementary school, and kindergarten (P<0.001). The most important contents of sanitary education were personal sanitary management (43.5%), food material management (25.9%), and sanitary and safety management of equipment and utensils (17.6%). The necessity of sanitary education recognized by the subjects was absolutely necessary at 69.9% and necessary at 28.0%. The application of knowledge from sanitary education is high in proper application at 50.8% and absolute application at 40.4%. The improvement effect after sanitary education was higher in kindergarten than in elementary school and middle and high school (P<0.01). The performance of sanitary management was high at 4.7 out of 5. In particular, personal sanitary management was the highest in elementary school at 4.8 followed in order by middle and high school (4.7) and kindergarten (4.6) (P<0.01). The necessity of sanitary education and the application of knowledge obtained from sanitary education to the food service showed a significant and positive correlation with the sanitary management performance (P<0.05, P<0.001). These results highlight that the need for customized sanitary education for institution types and an awareness of sanitary education by employees will enhance sanitary management in school food service.

• Journal of the East Asian Society of Dietary Life
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• v.17 no.5
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• pp.719-726
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• 2007

The results of adding citrus to Jeungpyun in order to diversify the kinds of Jeungpyun available as well as enhance the usage of citrus fruits, were assessed in this study. During fermentation pH was reduced carbon dioxide development was lowest in the citron product and then the tangerine, cumquat and control Jeungpyun, respectively. Volume and specific volume of Jeungpyun were highest id the cumquat Jeungpyun. For all the citrus additions, except for the cumquat there were no significant differences when compared to the control. The tangerine product showed the highest redness and yellowness among the types of citrus, fellowed by cumquat, citron, and lemon. In the textural property tests, hardness was highest in the lemon Jeungpyun. Then, less hardness occurred in the order of citron, control, tangerine and the cumquat Jeungpyun was the softest. In the sensory evaluation, preferred color was in the order of tangerine, cumquat citron, and lemon Jeungpyun. Ultimately, the tangerine Jeungpyun had the best color. In the taste test, preferred taste was in the order of cumquat, citron, tangerine, and lemon Jeungpyun, all resulting in better taste than the pure Jeungpyun. The softness of the Jeungpyun was good in the order of cumquat, tangerine, control, citron, and lemon Jeungpyun. Thus, the cumquat Jeungpyun was softest, while lemon Jeungpyun was hardest. Finally, overall acceptance was good in the order of cumquat, tangerine, citron, control, and lemon Jeungpyun.

• Food Science of Animal Resources
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• v.39 no.2
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• pp.222-228
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• 2019

This research was motivated by our encounter with the situation where an optimization was done based on statistically non-significant models having poor fits. Such a situation took place in a research to optimize manufacturing conditions for improving storage stability of coffee-supplemented milk beverage by using response surface methodology, where two responses are $Y_1$=particle size and $Y_2$=zeta-potential, two factors are $F_1$=speed of primary homogenization (rpm) and $F_2$=concentration of emulsifier (%), and the optimization objective is to simultaneously minimize $Y_1$ and maximize $Y_2$. For response surface analysis, practically, the second-order polynomial model is almost solely used. But, there exists the cases in which the second-order model fails to provide a good fit, to which remedies are seldom known to researchers. Thus, as an alternative to a failed second-order model, we present the heterogeneous third-order model, which can be used when the experimental plan is a two-factor central composite design having -1, 0, and 1 as the coded levels of factors. And, for multi-response optimization, we suggest a modified desirability function technique. Using these two methods, we have obtained statistical models with improved fits and multi-response optimization results with the predictions better than those in the previous research. Our predicted optimum combination of conditions is ($F_1$, $F_2$)=(5,000, 0.295), which is different from the previous combination. This research is expected to help improve the quality of response surface analysis in experimental sciences including food science of animal resources.

• Food Science and Preservation
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• v.12 no.6
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• pp.572-577
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• 2005

This study was conducted to investigate the effect of binding agents on the physicochemical characteristics of granule prepared by Lentinus edodes. The mushroom powder was mixed with com starch, lactose, gelatin, gum arabic, or dextrin(DE=23), and the mixtures were passed to granule sieve. Solubility of granule was in the following order, gum arabic>gelatin>lactose, dextrin>corn starch. L value was in the following order, com starch, lactose>gelatin, gum arabic, dextrin. a value and pH were not affected by the binding agents. b value was in following order, lactose, corn starch>gelatin, gum arabic>dextrin. Viscosity was in the following order, gelatin, corn starch>gum arabic, dextrin>lactose. Water absorption was in the following order, gelatin>lactose>corn starch>dextrin>gum arabic. Sugar content was in the following order, gum arabic>lactose, dextrin>corn starch, gelatin. Protein content was the highest in granule formed with gelatin. These results suggested that gum arabic can be utilized for improving solubility and lowering absorption of Lentinus edodes granule as binding agent.