• Preventive Nutrition and Food Science
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• v.21 no.1
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• pp.73-77
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• 2016

Flow and dynamic rheological properties of thickened waters prepared with commercial food thickeners were investigated at different pH levels (3, 4, 5, 6, and 7). The commercial xanthan gum (XG)-based thickener (thickener A) and starch-based thickener (thickener B), which have been commonly used in a domestic hospital and nursing home for patients with swallowing difficulty (dysphagia) in Korea, were selected in this study. Thickened samples with both thickeners at different pH levels showed high shear-thinning flow behaviors (n=0.08~0.22). Thickened samples at pH 3 showed higher n values and lower consistency index (K) values when compared to those at other pH levels. The K values of thickener A increased with an increase in pH level, while the n values decreased, showing that the flow properties greatly depended on pH. There were no noticeable changes in the K values of thickener B between pH 4 and 7. At pH 3, the thickened water with thickener A showed a higher storage modulus (G') value, while that with thickener B showed a lower G'. These rheological parameters exhibited differences in rheological behaviors between XG-based and starch-based thickeners, indicating that the rheological properties of thickened waters appear to be greatly influenced by the acidic condition and the type of food thickener. Appropriately selecting a commercial food thickener seems to be greatly important for the preparation of thickened acidic fluids with desirable rheological properties for safe swallowing.

• Journal of Dairy Science and Biotechnology
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• v.28 no.1
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• pp.35-41
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• 2010

Food allergy is defined as adverse reactions toward food mediated by aberrant immune mechanisms. Therefore, an allergic response to a food antigen can be thought of as an aberrant mucosal immune response. Food allergy most often begins in the first 1~2 years of life with the process of sensitization by which the immune system responds to specific food proteins, most often with the development of allergen-specific immunoglobulin E (IgE). Over time, most food allergeies are lost, although allergy to some foods is often long lived. The most important allergen sources involved in early food allergy are milk, eggs, peanut, soybean, meat, fish and cereals. Milk allergy seem to be associated with casein and whey protein. Important features of proteins as allergenicity are size, abundance and stability. Strategies for the prevention of milk allergy is breast-feeding, partially hydrolysised infant formula, using of probiotics, immune components in milk, preparation of low allergenicity milk protein and allergy therapy (immune therapy).

• Korean Journal of Human Ecology
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• v.9 no.2
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• pp.223-230
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• 2000

The survey was conducted by using questionnaires in order to investigate the expectation of over middle aged people on dietary living during their elderly life. Many persons(41.9%) anticipate that some kind of change will happen in dietary living during their elderly life. They are willing to prepare their own meals by themselves (73.5% of male and 86.6% of female). It is expected that they prefer various kinds of foods, korean traditional foods, home-made foods, natural food to processed food, and nutritionally balanced foods. The balance of nutrition and easiness of digestion should be primarily considered as a base of food choice, and then taste or convenience. The result of this study indicates that korean traditional food culture can not be easily changed. If food industries had a plan to produce some items for future silver generation, they should make efforts to develop processed foods considered the nutrition and digestibility, natural foods packed conveniently for home-cooking, and food preparation equipment used easily by elderly people.

• KOREAN JOURNAL OF PACKAGING SCIENCE & TECHNOLOGY
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• v.20 no.1
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• pp.7-15
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• 2014

Agar-based composite films were prepared with variety of food processing and agricultural processing waste materials in order to screen natural lingo-cellulosic resources for the value-added utilization of the under-utilized materials. The effect of these waste materials (10 wt% based on agar) on mechanical properties, moisture content (MC), water vapor permeability (WVP), water absorption behavior of biocomposite films were investigated. Biocomposite films prepared with various fibers resulted in significant increase or decrease in color and percent transmittance. The MC, WVP, and surface hydrophobicity of biocomposite films increased significantly by incorporation of fibers, while the water uptake ratio and solubility of the film decreased. SEM images of biocomposite film showed better adhesion between the fiber and agar polymer. Among the tested cellulosic waste materials, rice wine waste, onion and garlic fibers were promising for the value-added utilization as a reinforcing material for the preparation of biocomposite food packaging films.

• KSBB Journal
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• v.26 no.2
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• pp.157-164
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• 2011

Five assays for anti-HBs were compared to improve potency test of Human lgG preparations. The three commercial EIA kits were optimized including dose response curve ranges and compared by conducting a co-laboratory study. After selecting the most reproducible EIA kit, methods comparison was performed with 22 samples in 5 different days. As a result, EIA (7.7 ${\pm}$ 5.3%) and MEIA (AxSYM: 3.7 ${\pm}$ 1.9%, IMx: 1.6 ${\pm}$ 0.8%) showed precision and accuracy (100.1 ${\pm}$ 12.6%). Therefore, the validated EIA assay was established and it is believed to be comparable to current MEIA.

• Journal of the Korean Society of Food Culture
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• v.11 no.1
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• pp.23-35
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• 1996

The main purpose of this study was to observe the effect of school lunch program on dietary habits of elementary school children and their food preferences. A questionnaire survey was conducted on 785 children and their mother in ele-mentary school with and without school lunch program. The results of this study can be summarized as follows: 1. 91.1% of subjects were eating rice for breakfast menu and 12.2% of subjects were skipping breakfast every morning. 2. Most of the children preferred fruits, ddugboggi, ice cream, fritter, cookie, bread, beverage and hot dog for snacks. 3. Despite of its restrictive practice, the school lunch program proved to be contributory to the improvement of children's food intake habits, table manners, keeping social order, sanitary consiousness, gratitude for their parents. 4. Children preferred kimbap, bokumbap and hamburger for main dish, fish jelly soup, brown seaweed soup and bean-sprout soup for soup, animal food for side dish and frying saute for cooking methods. 5. Most of the children disliked crown daisy, green pepper, mushroom, green onion, onion, dropwort, soybean and carrot for their food materials.

• Journal of the Korean Society of Food Culture
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• v.38 no.6
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• pp.402-414
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• 2023

This study evaluated the consumers' demands and points of improvement for restaurant meal replacement through importance-performance analysis by the restaurant meal replacement segment market using food involvement. The results were as follows. First, after segmenting the restaurant meal replacement market using food involvement, it was classified into three markets (multiple involvements, exploration-oriented, and product quality-oriented). Second, an analysis of the importance of restaurant meal replacement selection attributes revealed taste, sanitation, quality, freshness, price, saving time, texture, ingredients, preparation process, and quantity to be highly important. An analysis of the differences according to the market type revealed the multiple involvement type to be more important than other groups, considering the restaurant meal replacement selection attribute element. Third, an analysis of the importance-performance analysis of restaurant meal replacement selection attributes revealed that quantity and price as the selection attributes that needed to be improved first in all three markets. In addition, in the multiple involvement type, food additives appeared as a selection attribute requiring priority improvement, revealing the characteristics of a market that cares about diet and health.

• Korean Journal of Food Science and Technology
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• v.30 no.3
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• pp.608-614
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• 1998

In order to establish the scientific foundations for the production of Korean traditional kanjang (soy sauce) in a semi-pilot scale, meju preparation and kanjang mashing methods were investigated. Two types of meju, one that was prepared by conventional method (CM-meju) and the other that prepared by modified conventional method (MCM-meju), were made and compared their characteristics. The former made of cooked and crushed soybean with a brick shape was fermented at $15{\sim}20^{\circ}C\;and\;40{\sim}50%$ relative humidity (RH) for 30 days in koji room and the latter was fermented at $25{\sim}30^{\circ}C\;and\;80{\sim}90%$ RH seemingly being optimum for the growth of meju-organisms for the same period. The quality of MCM-meju as a raw material for the kanjang preparation was considered to be superior to that of CM-meju as the higher soluble nitrogen and total free amino acids content, the major factor for the evaluation of the quality of meju, were found in the former although the higher total nitrogen content and lower % weight loss were observed in the latter during meju preparation process. The quality of MCM-kanjang with higher total nitrogen, free amino acids, free sugars and the lower residual nitrogen content in cake after separation of kanjang was also found to be superior to that of CM-kanjang in sensory evaluation results.

• Journal of the Korean Society of Food Science and Nutrition
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• v.27 no.6
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• pp.1077-1085
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• 1998

The effects of yeast on the fermentation of kimchi were investigated. The treatments were divided into two groups; yeast treatment during salting of Chinese cabbage(YS) and yeast treatment added in kimchi preparation(YF kimchi). The edible periods of the kimchi after yeast treatment during salting (YS kimchi) was extended 4~5 days by the results of pH, acidity, sensory quality. The activities of amylase, polygalacturonase and galactosidase of YS kimchi were retained at low levels compared to non treated condition throughout all fermentation periods, whereas protease activity was not significant different from the non treated condition. In addition, the contents of total hexose and uronic acid did not show remarkable change throughout fermentation, but total pentose was decreased by more than 7% at the early middle stage of fermentation(7~14 day after soaking). The change of free amino acid content was decreased by 16~44% than the non treated condition. In contrast, in the YF kimchi, the sensory quality was not good. The activities of amylase, protease, polygalacturonase and gal actosidase were appreciably higher than that of the non treated condition. Meanwhile, the contents of total hexose, total pentose and uronic acid, as products of degradation of cell wall constituents by the above enzymes, were decreased by 18~68% throughout fermentation than the non treated con dition, and total free amino acids were higher than the YS kimchi. Thus, yeast treatment during salting was found to be more effective to extend the edible periods of the kimchi.

• Journal of the Korean Society of Food Science and Nutrition
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• v.24 no.5
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• pp.734-743
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• 1995

This study was conducted to summarize the known kinds and characteristics of traditional special kimchies in Pusan and Kyungnam province. The taste of kimchi varies from region to region within Korea. In the southern part of the country, where the weather is much warmer, more salt is added along with salted anchovy(Myulchi Jeot), and the kimchi is less juicy and richer in flavor. More than 180 different varieties of kimchi are reported in Korea, but there are 30~40 different kinds of kimchi in Pusan and Kyungnam province depending on the main ingredients are known. Puchu kimchi(leek kimchi), Uung kimchi(burdock kimchi), Kongnip kimchi(soybean leaf kimchi) are the typical traditional special kimchi in Pusna and Kyungnam province. Todays, dietary cultures has been gradually changed, and diminished the local characteristics. Also, these tendency appears in the taste of the traditional special kimchi. However, it still remains the distinciton in the taste, ingredients and the methods of preparation of kimchies of Pusan and Kyungnam province. In this paper, the dispersed informations on the kinds, characteristics, and the preparation method of the special kimchies known in literatures and inherited persons in Pusan and Kyungnam province were tried to put together.