• Journal of the Korean Society of Food Science and Nutrition
• /
• v.39 no.8
• /
• pp.1179-1186
• /
• 2010

The antiradical property of hot water extract from dried radish (DR) or dried radish roasted with pressure (DRRP) was investigated in vitro and in LLC-PK1 cell system. The contents of total free amino acid and reducing sugar in DR were decreased by 72.86% and 3.17%, respectively, after pressurized roasting. In vitro test, $IC_{50}$ for DR and DRRP for DPPH radical scavenging activity were 646.70 and $135.45\;{\mu}g/mL$, 896.10 and $566.98\;{\mu}g/mL$ for superoxide anion radical, and 722.26 and $531.84\;{\mu}g/mL$ for hydroxy radical, respectively. The radical scavenging effects of DRRP was significantly greater than those for DR (p<0.001). These radical scavenging effects of DR and DRRP were confirmed in LLC-$PK_1$ at which oxidative stresses were induced by superoxide, nitric oxide and peroxynitrite generated in the treatment of pyrogallol, SNP, and SIN-1, respectively. Cell viability was increased in the presence of DR or DRRP, dose dependently (p<0.05), and TBARS formation was decreased. The protective effects of DRRP against oxidative damage in LLC-$PK_1$ were greater than those of DR at the same concentration tested (p<0.05). This superior antiradical activity of DRRP might be due to the products produced during the pressurized roasting in addition to the antioxidative compounds originally present in the radish. 5-hydroxyl methyl furfural (5-HMF) known as an intermediate product of the maillard reaction was detected in DRRP (0.57 mg/g), but not from DR. In conclusion, daily consumption of DRRP may prevent oxidative damage by retarding oxidative stress.

• Korean Journal of Community Nutrition
• /
• v.10 no.6
• /
• pp.845-859
• /
• 2005

The purpose of this study was to investigate the regional differences in food preference among college students participating in a nutrition education program via internet. The subjects were 1672 college students (male: 762, female: 910) and divided into 4 regional groups. A survey using a self-administered questionnaire was conducted using a self-administered questionnaire on taste and food preferences. Data was collected via internet or by mail. Prevalence of the food preferences among regional groups was examined using SPSS statistical package. Food preferences were significantly associated with sex and region. Female students in Chungcheong and Kyungsang areas showed significantly higher preference of the hot taste compared to Seoul and Kyunggi areas. Female students in Seoul, Kyunggi and Chungcheong areas showed significantly higher preference of the boiled bean rice compared to the Kyungsang area. The preference for Kimchi stew of female students in Seoul and Kyunggi was significantly higher than those in Chungcheong and Kyngsang areas. Male students in the Chungcheong area showed significantly higher Preferences of the Young radish kimchi, while female students in this area showed significantly higher preference of the Radish kimchi compared to other areas. The preference for roasted laver of female students in Seoul, Kyunggi and Kyungsang areas was significantly higher compared to the Chungcheong area. The preference for fried chicken of male students in Seoul was significantly higher than that in other areas. The preference for bean sprouts and season bonnet bellflower of male students in Seoul, Chungcheong and Kyungsang areas were significantly higher compared to the Kyunggi area. Therefore, these results Provide nation-wide information on food Preferences among Korean college students. (Korean J Community Nutrition 10(6) : $845\∼859$ 2005)

• Korean Journal of Community Nutrition
• /
• v.14 no.1
• /
• pp.123-136
• /
• 2009

Sodium is a necessary element for the body. Excessive intake of sodium is known as one of the risk factors for chronic diseases. Recently, increasing numbers of people in Korea are suffering from chronic diseases. Major causes of deaths were chronic degenerative disease with the rising aging population. Especially, the population of rural areas is growing older fast. In rural areas, it is known that under nutrition and high sodium intake were major nutritional problems. For sodium intake, there were some studies about contributing food items. They were not enough to show diets relate to sodium intakes. Thus, this study analyzed dishes contributing to sodium intakes of elderly living in rural areas. Dietary intakes using "the 24hour recall method" were used. For the analysis for sodium intakes, "Can-pro3.0" was used. Ranking of dishes by contributions of sodium intakes were Korean cabbage, kimchi (19.6%), seasoned soybean paste (5.3%), soybean paste (4.6%), soybean paste soup dried radish leaves (3.5%), hot pork and kimchi stew (3.4%) in order. Ranking of dish groups by sodium intakes was kimchies (28.3%), soup and hot soups (22.8%), stews and casseroles (9.7%), seasonings (8.2%),and seasoned vegetables (6.0%) in order. One-dish meals among cooked rice, wheat noodles among noodle and mandu, soups using the soybean paste, stews using soybean paste and kimchi, salted fish among grilled foods, stir-fried anchovy among stir-fried foods, seasoned spinach, and Korean cabbage kimchi contributed to sodium intakes. As the nutrition deficiency of the elderly living in rural areas could be a problem, and excessive sodium intakes is threatening to their health, it is needed for the senior citizens to have adequate knowledge for diets containing less sodium. And recipes for healthy food and nutrition education based on their diets are needed.

• Preventive Nutrition and Food Science
• /
• v.9 no.2
• /
• pp.126-132
• /
• 2004

The physicochemical properties and sensory characteristics of red pimiento kakdugi (radish kimchi) during fermentation at 1$0^{\circ}C$ were compared with red pepper kakdugi (control). The fermentation patterns of two kakdugies were similar, although total acidity, reducing sugar content and lactobacilli number of the red pimiento kakdugi were somewhat higher than those of control. The hardness and fracturability of the radish cubes of kakdugi were not significantly different from those of red pepper kakdugi during fermentation. The Hunter color L, a and b values of both kakdugies increased gradually until the 10th day, and then decreased thereafter. The AST A value and redness of red pimiento kakdugi were consistently higher than those of control, which is consistent with the sensory results. While red pepper powder kakdugi contains high concentrations of capsaicin and dihydrocapsaicin, in pimiento kakdugi capsaicinoids were not detected by HPLC analysis. Also, capsainoids in red pepper kakdugi decreased gradually as fermentation proceeded. Sensory evaluation showed that the score of hot taste for red pimiento kakdugi was lower, compared with that of control (p < 0.05), whereas the score of over-all acceptability for red pimiento kakdugi was higher than that of control.

• Journal of the Korean Dietetic Association
• /
• v.2 no.2
• /
• pp.141-157
• /
• 1996

This study was carried out to obtain the information concerning food preferences of 588 men working at industry in Ulsan area. The subjects of this study were composed of 245 clerical workers and 343 physical workers. The results of this study can be summarized as follows: 1. Average age of this subjects was 36.1 years(ranging from 21 to 57), in the educational background, most of subjects were high school graduates. The mean height and weight were l71.6cm and 67.5kg. 2. In the preference of food 1) The preference for staple foods, well-milled cooked rice was preferred the most by the subjects. Kalkooksoo(hot noodle), cooked rice covered with raw fish pieces, bread with red bean were preferred the most by the workers. 2) The acceptance for side-dishes were high in sirak(woogyogi) soup, bach tang, soybean paste soup, broiled fish, wild plant namul, small radish kimchi and crab steaming products by clerial and physical workers all together. 3) The preferences for fruits and beverages were high in water-melon, pear, fruit juice and Korean traditional beverage.

• Journal of the Korean Society of Food Culture
• /
• v.23 no.4
• /
• pp.438-447
• /
• 2008

"Gyuhapchongseo" was published in 1809, and introduced the cooking method of the noble class in the late Joseon dynasty. The characteristics of the side dishes in "Gyuhapchongseo" are as follows. Firstly, red pepper was used as whole red pepper, shredded red pepper, powdered red pepper, or Korean hot pepper paste. Secondly, salt-fermented fish was used in some forms of Kimchi, including Sukbakgi, Dong A Sukbakgi, and Gyochimhae. Thirdly, to retain the juiciness of meat during roasting, meat was spread cold water on the surface, dipped into the washing water of rice or wrapped with wet paper. Fourth, to improve the visual effect of a dish, cooked foods were displayed with various color schemes, panfried foods with two tones (egg white and yellow) of color on each side and the use of radish pigmented with deep red color. On examination of the characteristics of food in "Gyuhapchongseo", I would suggest applicable practices for the present cuisine. The use of gravy produced from the boiling down of fish flesh could raise the nutritive value of Kimchi. In "Gyuhapchongseo", Yak po (semi-dried minced beef) is noted as being good for elderly people with bad teeth. A steamed dish with dog meat in Dong A in "Gyuhapchongseo" is made by hollowing out Dong A and putting a dog in it to cook the dog meat to well done in a fire made with the hulls of rice. This technique could be used to present cuisine for steamed and roasted dishes using food ingredients such as pumpkin, sweet pumpkin, and overripe cucumber.

• Journal of the Korean Society of Food Culture
• /
• v.29 no.6
• /
• pp.477-487
• /
• 2014

This study aimed to develop a new commercialization model for theindustrialization of head family food as a gentry families' complex food culture product. We tried to develop a head family food and propose a city sightseeing style's head family product by interviews with 'Hakindang' as the center, the head house of the Suwon Baek clan, and Injaegong group in Jeonjoo. Hakindang (in Jeonju) was confirmed as an improved model Korean-style house in the enlightenment period and the twentieth style modern head family as emerging capitalist. Hakindangsupported independence war funds in the Japanese colonial era and was widely known as gate of filial piety in Jeonju. Representative seasonal foods of Hakindang include pan-fried sweet rice cake with flower petals in the spring, hot spicy meat stew and polypus variabilis in summer, hanchae in autumn, and napa cabbage kimchi with salted flatfish seafood in the winter. When parents-in-law had a birthday, there were party noodles, sliced abalone stuffed with pine nuts, brass chafing dish, fish eggs, slices of blilde meat, and matnaji. Daily, there were mainly salted seafood, slices of raw fish, grilled short rib patties, braised fish, baked fish, syruped chestnut, grilled deodeok root, bean sprouts, radish preserved with salt, dongchimi, soy sauce-marinated horseshoe crab, butterbur, perilla seed stew, salted clams, raw bamboo shoot, agar, fried kelp, etc. The most basic virtue of the head family is filial duty, and they developed mosim dining as a representative food of Hakingdang's head family. The mosim menu is composed of 65% carbohydrates, 20% protein, and 15% fat because it is table for parents-in-law like more than 75 years old. The sensory evaluation showed a chewy texture that is easily swallowed.

• Microbiology and Biotechnology Letters
• /
• v.41 no.2
• /
• pp.228-235
• /
• 2013

Radish (Raphanus sativus) is a common cruciferous vegetable, and its aerial parts, called Mu-chung in Korean, have plentiful nutritional components such as vitamins, minerals and dietary fibers. Mu-chung has been used as a kimchi, a traditional Korean fermented dish, and dried Mu-chung is an important component of soups commonly consumed during winter in Korea. Since the advent of the mass production of radish in Korea, with the segregation of farm areas and towns and changing diets, Mu-chung has mostly been discarded instead of utilized. In addition, studies concerning the efficient utilization and useful bioactivities of Mu-chung are still lacking worldwide. In this study, we prepared the ethanol extract of Mu-chung and its subsequent solvent fractions. Antimicrobial, antioxidation, and anticoagulation activities were then evaluated in the hopes of developing a functional biomaterial from Korean radishes' aerial parts. The ethanol extraction yield for hot-air dried Mu-chung was 5.6%, and the fraction yields of n-hexane (H), ethylacetate (EA), butanol (B) and water residue were 25.3, 3.6, 19.4, and 51.7%, respectively. Analysis of total polyphenol and total flavonoid contents showed that the EA fraction had the highest content (97.57 and 152.91 mg/g) amongst the fractions. In antimicrobial activity assays, the H and EA fractions were effective against gram positive bacteria (Staphylococcus aureus, Listeria monocytogenes, and Bacillus subtilis), but not effective against gram negative bacteria (Escherichia coli and Pseudomonas aeruginosa). The B fraction also exhibited moderate antibacterial activity, suggesting that the extract of Mu-chung has various antibacterial components. In antioxidation activity assays, the EA fraction showed strong DPPH, ABTS and nitrite scavenging activities ($69-222{\mu}g/ml$ of $IC_{50}$), including reducing power. In anticoagulation activity assays, the EA fraction demonstrated strong inhibition activity against human thrombin and prothrombin. Prominent anticoagulation activity was found in aPTT assays; the aPTT of the EA fraction was extended 15-fold compared than that of the solvent control. Our results suggest that Mu-chung is an attractive nutritional food material possessing useful bioactivities, and the EA fraction of Mu-chung could be developed as a functional food ingredient.

• Korean journal of food and cookery science
• /
• v.13 no.4
• /
• pp.462-471
• /
• 1997

Effect of citron on Dongchimi (watery radish kimchi) fermentation was investigated by sensory evaluation and the measurement of non-volatile organic acids, soluble pectin, and the texture during fermentation up to 36 days. Dongchimi with various levels of citron (0, 1, 2, 4, 6％) was fermented at 10$^{\circ}C$. In sensory evaluation, citron-added Dongchimi showed the higher scores in most characteristics than Dongchimi without citron in which Dongchimi with 2％ citron was the most preferable. The non-volatile organic acids of Dongchimi were identified as lactic acid, oxalic acid, succinic acid, malic acid, and citric acid. There were significant changes in the contents of lactic acid, succinic acid, malic acid, and citric acid during fermentation. Generally, the content of hydrochloric acid-soluble pectin (HSP) of Dongchimi occupied the higher ratio in the total soluble pectin content. Generally, the content of hot water-soluble pectin (HWSP) of Dongchimi decreased and that of sodium hexametaphosphate-soluble pectin (NaSP) increased during fermentation. The hardness of radish in Dongchimi showed the highest score on 23$\^$rd/ day and decreased thereafter.