• Title/Summary/Keyword: Korean typical foods

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Drying of Alaska Pollack in Controlled Conditions to Identify Major Factors for Textural Properties of Hwangtae (명태 건조과정에서 일어나는 수분과 수분활성도 변화가 명태건조품의 물성에 미치는 영향)

  • Ha, Ju-Yeoup;Lee, Sang-Hyun;Jung, Kyung-Jin;Jo, Young-Duk;Kim, Jae-Cherl
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.12
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    • pp.1903-1907
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    • 2010
  • Drying curves for raw Alaska pollack seemed to follow typical food dehydration process with a very short initial settling down period. It was evident that there are some differences in drying rates between each part of fish body showing the highest drying rate for fish head followed by that for fish skin and that for flesh, presumably because of differences in water holding capacity of the components of each part. Specifically, the drying curve of fish flesh revealed that a boundary layer, thereby, a time period, existed which showed a big difference in moisture content and/or water activity as drying proceeds. The boundary layer in fish flesh with high moisture content between the layer contributes to reduce drying rate mainly as a consequence of protein aggregation resulting in hardening of fish flesh. The first boundary layer in this work appeared to show within several hours after initiation of drying. For Hwangtae, a naturally cyclic freeze-thaw dried and aged Alaska pollack which was popular in Korea, manufacturing process, it is clear that periodic moistening of boundary layer in fish flesh prohibits hardening fish flesh in boundary layer and enables steady moisture diffusion from inside of the fish flesh to surface of the fish body.

Comparison of lymphocyte DNA damage levels and total antioxidant capacity in Korean and American diet

  • Lee, Min Young;Kim, Hyun A;Kang, Myung Hee
    • Nutrition Research and Practice
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    • v.11 no.1
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    • pp.33-42
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    • 2017
  • BACKGROUND/OBJECTIVE: This study aims to measure the in vitro antioxidant capacity of Korean diet (KD) with American diet (AD) as a control group and to examine the ex vivo DNA damage reduction effect on human lymphocytes. MATERIALS/METHODS: The KD applied in this study is the standard one-week meals for Koreans (2,000 kcal/day) suggested by 2010 Dietary Reference Intakes for Koreans. The AD, which is the control group, is a one-week menu (2,000 kcal/day) that consists of foods that Americans would commonly take in according to the National Health and Nutrition Examination Survey. The antioxidant capacity of each menu was measured by means of the total phenolic assay and 3 in vitro antioxidant activity assays (2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, trolox equivalent antioxidant capacity (TEAC), Oxygen radical absorbance capacity ($ORAC_{ROO{\cdot}}$)), while the extent of ex vivo lymphocyte DNA damage was measured by means of the comet assay. RESULTS: When measured by means of TEAC assay, the in vitro antioxidant capacity of the KD of the day was higher than that of the AD (P < 0.05) while there was no significant difference in total phenolic contents and DPPH and ORAC assays. The ex vivo lymphocyte DNA damage protective effect of the KD was significantly higher than that of the AD (P < 0.01). As for the one-week menu combining the menus for 7 days, the total phenolic assay (P < 0.05) and in vitro antioxidant capacity (P < 0.001, DPPH; P < 0.01, TEAC) of the KD menu were significantly higher than those of the AD menu. Likewise, the ex vivo DNA damage reduction rate of the Korean seven-day menu was significantly higher than that of the American menu (P < 0.01). CONCLUSION: This study demonstrates that the high antioxidant capacity and DNA damage protective effect of KD, which consists generally of various plant foods, are higher than those of typical AD.

A Study of the Effects of Dietary Behavior on the Nutritional Status of University Students

  • Kim, Mi-Kang;Kim, Sook-He;Lee, Hye-Yang;Kim, Juhyeon
    • Nutritional Sciences
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    • v.5 no.2
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    • pp.84-90
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    • 2002
  • The purpose of this study was to investigate the effects of dietary behavior on the nutritional status of university students in Korea. A dietary intake survey of 603 university students (223 males and 380 females) was conducted using a 24-hour recall method. The resulting data on dietary behavior and nutrient intakes were analyzed by the SAS program package. The main results were as follows : 1) Most of the subjects were in their twenties and no obese cases were found. 2) Dietary intake data showed that, except for vitamin C in the female students, the average daily intakes of most nutrients did lot meet the Korean Recommended Dietary Allowances (RDA). The study also showed that most of the subjects, especially the female students, were concerned about having satisfactory physical appearances. Fat provided 25% of the daily energy intake, and this level was higher than the 20% recommended by the Korean Dietary Guidelines. In the female students, the iron intake from animal foods was lower than that from plant foods. 3) Male students were not very serious about healthy eating. However, the female group, who obtained a high score in dietary behavior, consumed more vegetables and had higher intakes of energy, protein, Ca, p, vitamin A, and vitamin C than the male group, even though they did not meet the Korean RDA in most nutrients. Energy intake from fats, as a percent of total energy intake, was lower than in the group of females who obtained higher stores in dietary behavior than the other groups. To sum up, the university students surveyed in this study were found to have the typical dietary behavior of young adults, such as frequent eating out and snacking. Female students were extremely conscious of their body images this can exert an important direct influence on their dietary intakes and health status. It is very important for university students to develop healthy lifestyles and desirable dietary behaviors, to best enable them to continue to lead a healthy lift: in their later years.

Recent concepts on vitamin D in children and adolescents (소아청소년기의 비타민 D에 대한 최신 지견)

  • Yang, Hye Ran;Seo, Jeong Wan;Kim, Yong Joo;Kim, Jae Young;Ryoo, Eell;Sim, Jae Geon;Yom, Hye Won;Chang, Ju Young;Jung, Ji A;Choi, Kwang Hae
    • Clinical and Experimental Pediatrics
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    • v.52 no.10
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    • pp.1082-1089
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    • 2009
  • Vitamin D is an important fat-soluble vitamin that functions as a prohormone and affects bone mineralization and calcium homeostasis. Vitamin D deficiency causesboth musculoskeletal manifestations, including rickets, and extra-musculoskeletal symptoms. Because vitamin D is naturally present in only some foods, intake of daily foods cannot meet the dietary reference intake for vitamin D. Sunlight is the main source of vitamin D in humans therefore, the lack of sunlight can easily cause vitamin D deficiency in children and adolescents. Vitamin D deficiency can be diagnosed on the basis ofits typical clinical manifestation, laboratory tests, and radiologic findings. Detection of vitamin D deficiency in children or adolescents necessitates the simultaneous administration of vitamin D and calcium supplements. To prevent vitamin D deficiency, 200 IU of daily vitamin D intake is recommended in infants, and 400 IU of daily vitamin D intake is recommended in Korean children and adolescents.

The Study of Dietary Culture in East Cot Area in Kyungpook Province (II) - for Sacrificial Rites Foods - (경북 동해안 지역 식생활 문화에 관한 연구(II) - 제례 음식 -)

  • Yoon, Suk-Kyung;Park, Mi-Nam
    • Journal of the Korean Society of Food Culture
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    • v.14 no.2
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    • pp.83-102
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    • 1999
  • The several sacrificial rites foods in east coast areas Kyungpook province, Pohang, Youngduk, and Uljin, were surveyed. For the anniversary menorial service, the food items in these reas were mainly rice(Bab'), soup(Guk'), stew(Tang'), fruits, neats and fishes, alcohol which are the typical food items for any other area in Korea. In this east coast area, the seaweed was used more often than in inner land area for this rite food. Four kinds of rice cake(Ddeok' or Pyun') were surveyed for this rite. For the baked food item(Geuk'), the fish squid and the Alaska pollack were used frequently for Geuk'. For the fruits dishes, 3 items were the basic. Tang' which was made with the various fishes, were used very frequently. For the religious memorial service for god to guard the household, the displayed food items were different from depending on the type of the god to guard the household, however, the general display of the food items was almost the same as in land area. For the winter sacrificial rite, the boiled rice(97%) and Bakpyun' was used mostly for the Ddeok'. For the Guk', bean sprout was used mostly, however, the seaweed soup was also used(7%). The fish Tang' was the most used one(35%). For young-deung-je', which implied th safe guard of the household, most of the food items are similar to those of the normal sacrificial rite, however, the fishes which were not fishy were used. The housekeeper arranged the rite to catch a large amount of the fishes and to hope the wellbeing of the household, Poong-yer-je is so called as Byul-sin-gud'(a practice of an exorciser). The food items for this Poong-yer-je' were almost similar to those of the winter sacrificial rite, however, Geulpyun' was mostly used for the Pyun'. In addition that, the red-bean Si-ruddock', Baekpyun', and Yung-ddock'(a dragon cake) were used for this rite, At the end of the sacrificial rite, Yong-ddock' was served to the dragon king which was believed in sea.

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Snacking Behaviors of Middle and High School Students in Seoul (서울시 중고등학생의 간식 섭취 실태)

  • Choi, Seul-Ki;Choi, Hyeon-Jeong;Chang, Nam-Soo;Cho, Sung-Hee;Choi, Young-Sun;Park, Hye-Kyung;Joung, Hyo-Jee
    • Korean Journal of Community Nutrition
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    • v.13 no.2
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    • pp.199-206
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    • 2008
  • The purpose of this study was to investigate snacking behavior in adolescents. We selected one middle school and one high school in 11 school districts in Seoul. The subjects were 1,813 students (904 boys and 909 girls) in 21 schools (11 middle schools and 10 high schools). Subjects reported their snacking behavior: snack frequency, snack type, snack time, with whom to eat snack, place to purchase snack. The subjects were classified into four groups by gender and schooling. The mean snack frequency was 2.8. Girls ate snacks more frequently than boys (p < 0.001). More than half of subjects ate 1 to 3 snacks a day. Only 9.3% of them did not eat any snack. Tangerine was highly ranked in snack type. Each subject groups had different snack time (p < 0.01) and type of snack (p < 0.001). Most snack was consumed alone (46.6%), however they mainly ate fruits and other foods with family. 46.9% of snacks were purchased outside. A typical snack time was 'before dinner' for most snacks except fruits. Unhealthy foods like soft drinks, cookies, chips, candies, chocolates, ice creams had relatively high proportion in snack consumption with friends. In conclusion, adolescents had different snacking behaviors by their age and gender. These results indicate necessities of multi-dimensional efforts at home, school, media and government level considering adolescents' age and gender for their healthy snacking behavior.

Combined effects of food and exercise on anaphylaxis

  • Kim, Cheol Woo;Figueroa, Arturo;Park, Chan Ho;Kwak, Yi Sub;Kim, Kwi Baek;Seo, Dae Yun;Lee, Hyung Rock
    • Nutrition Research and Practice
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    • v.7 no.5
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    • pp.347-351
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    • 2013
  • Food-dependent exercise-induced anaphylaxis (FDEIAn) is induced by different types and various intensities of physical activity, and is distinct from food allergies. It has been shown that consumption of allergenic food followed by exercise causes FDEIAn symptoms. Intake of allergenic food or medication before exercise is a major predisposing factor for FDEIAn. Urticaria and severe allergic reactions are general symptoms of FDEIAn. Dermatological tests and serum IgE assays are the typical prescreening methods, and have been used for several decades. However, these screening tests are not sufficient for detecting or preventing FDEIAn. It has been found that exercise may stimulate the release of mediators from IgE-dependent mast cells that can result in FDEIAn when a certain threshold level has been exceeded. Mast cell degradation might be a major factor to induce FDEIAn but this has not been determined. A number of foods have been reported to be involved in the onset of FDEIAn including wheat, eggs, chicken, shrimp, shellfish, nuts, fruits, and vegetables. It is also known that aspirin increases the occurrence of type I allergy symptoms when combined with specific foods. Moreover, high intensity and frequent exercise are more likely to provoke an attack than low intensity and less frequent exercise. In this paper, we present the current views of the pathophysiological mechanisms underlying FDEIAn within the context of exercise immunology. We also present a detailed FDEIAn definition along with etiologic factors and medical treatment for cholinergic urticaria (UC) and exercise-induced anaphylaxis (EIA).

Seasonal Variation of Food Intake in Food Frequency Questionnaire among Workers in a Nuclear Power Plant (조사 계절에 따른 식품섭취빈도 조사의 평균 섭취 횟수와 섭취량 변화)

  • Yang, Jae-Jeong;Lim, Hyun-Sul;Ko, Kwang-Pil;Ahn, Youn-Jhin;Ahn, Yoon-Ok;Park, Sue-Kyung
    • Journal of Preventive Medicine and Public Health
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    • v.40 no.3
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    • pp.239-248
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    • 2007
  • Objectives : This study was conducted to investigate the systematic error, such as seasonal change or inadequate food items, in a food frequency questionnaire administered to workers in a Nuclear Power Plant, Korea. Methods : We performed three repeat-tests with 28 subjects on May 13, July 8 and Dec 16, 1992. Our food frequency questionnaire (FFQ) comprised 84 foods organized into 7 food-groups, and was composed of the items of usual intake frequency (8 categories) and the amount per intake (3 or 4 categories) over the previous year. We compared the means of intake frequency and the frequency of the portion-size according to each season using Repeated Measures ANOVA and Pearson's chisquare test with Fisher's exact test. Results : We found the significant seasonal changes of several food items in intake frequency measurement. These items were typical seasonal foods such as mandarin orange, plum and green vegetables, while the single questions consisted of inadequate food items such as thick beef or similar soup and various kimchi products. Significant seasonal changes in portion-size were found in only two items: cooked rice-brown and fresh frozen fishes. Conclusions : The systematic errors observed could caused loss of validity in the FFQ. Consideration should be given for seasonal variation in FFQ survey and methodological concerns are needed to improve the quality for measuring usual diet pattern.

Selection of Representative Foods and 'Best-fit' Mapping of Other Foods for Estimation of a Comprehensive Exposure to Food Contaminants in a Korean Total Diet Study (한국인의 유해물질 식이 노출량 평가를 위한 대표식품 선정과 mapping)

  • Koh, Eun-Mi;Shin, Hye-Hyung;Yon, Mi-Yong;Nam, Eun-Jeong;Lee, Yoon-Na;Kim, Do-Hee;Lee, Jee-Yeon;Kim, Mee-Hye;Park, Sung-Kug;Choi, Hoon;Kim, Cho-Il
    • Korean Journal of Food Science and Technology
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    • v.43 no.6
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    • pp.773-782
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    • 2011
  • A food list representing the typical diet of Koreans was developed for a total diet study based on the 687 food items which appeared in the dietary intake data collected during the 2008 & 2009 Korea National Health & Nutrition Examination Survey. Food items included in 90% of the cumulative intake, items with a consumption frequency of 5% or higher and items contributing to 80% of cumulative fat intake were considered first. From the resulting 165 food items, 15 items were removed to avoid similar foods, while 10 distinct items were added to increase the efficiency of 'best-fit' mapping. Consequently, 160 items were selected as representative foods, which cover 90.93% of intake amount, 91.36% of energy intake and 89.05% of fat intake. Given that every food consumed by Koreans can't be analyzed for contaminants of interest, mapping other foods to the previously mentioned representative 160 foods is warranted because it enables a more comprehensive dietary exposure assessment that is close to reality.

Antimicrobial Effects of Scutellariae Radix Extract against Listeria monocytogenes (Listeria monocytogenes에 대한 황금추출물의 항균효과)

  • 조성환;김영록
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.5
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    • pp.959-963
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    • 2001
  • To investigate the antimicrobial effects of Scutellariae Radix extract against L.monocytogenes from foods, L. monocytogenes strains isolated from livestock, processed food from meat and milk, and frozen foods, were examined for their sensitivity to Scutellariae Radix extract. 30 L. monocytogenes strains were isolated from total 178 samples(16.9%); 13(14.0%) strains from beef 6(20.7%) strains from pork, 9(39.2%) strains from chicken and 2 (16.7%) strains from frozen foods but was not found from processed products, The serotypes of isolated L.monocytogenes were serotype O-1 strains (23, 76.7%) and serotype O-4 strains(7, 23.3%) on antisera agglutination test. The growth curves of isolates were shown lag phase, logarithmic phase, stationary phase and death phase as typical sigmoid curve on the preservative-free hams. After 6 hours. Scutellariae Radix extract contain group differ from control group on preservative-free ham samples, and the isolates were inhibited in more than 1000 ppm Scutellariae Radix extract on the inhibitory growth curve of L.monocytogenes. The mor-phological changes were observed by transmission electron microscope and the microbial cells membrane was destroyed by Scutellariae Radix extract.

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