• Structural Engineering and Mechanics
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• 제74권4호
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• pp.515-520
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• 2020

In the modern era, the world is facing unprecedented challenges in form of environmental pollution and international agencies are forcing scientists and materialists to look for green materials and structures to counter this problem. Composites based on renewable sources like plant based fibres, vegetable fibres are finding increasing use in interior components of automobile vehicles, aircraft, and building construction. In the present study, jute and flax fibre based composites were developed and tested for assessing their suitability for possible applications in interior cabin and parts of automobile and aerospace vehicles. Matrix system involves epoxy as resin and fibre weight fractions used were 45% and 55% respectively. Composites samples were prepared as per American society for testing and materials (ASTM) standard and were tested for individual fiber tensile strength, composite tensile strength, and flexural strength to analyse its behavior under various loading conditions. The results revealed that the Jute fibre composites possess enhanced mechanical properties over Flax fibre composites.

• 한국작물학회지
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• 제56권1호
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• pp.29-34
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• 2011

전통식품인 콩나물의 고부가가치화를 위한 우량 나물콩 품종 육성의 기초 자료를 제공하고자 특성이 다른 5종의 장려품종 나물콩으로 재배한 콩나물의 지방산 및 식이섬유 함량을 분석한 결과는 다음과 같다. 1. 생콩나물과 데친 콩나물의 지방산 조성은 큰 차이가 없어 가열 처리가 지방산 조성에는 영향을 끼치지 못하였다. 2. 전체 콩나물과 콩나물의 자엽 부위 지방산 조성은 원료콩과 비슷하였으나 배축 부위는 원료콩에 비해 포화지방산 함량이 높았으며 변이도 자엽 부위보다 컸다. 3. 가열 처리된 콩나물이 생콩나물보다 식이섬유 함량이 높았다. 4. 지방산 조성과 식이섬유 함량은 품종별로 차이가 있었다.

• 동아시아식생활학회지
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• 제13권3호
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• pp.176-184
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• 2003

This experiment was planned to develop a functional supplements by food resources to prevent and lessen the bad effects caused by the environmental pollution such as bad food, air, water and heavy metals exposed to people these days. As for Its primary stage, the nutrient profile and sensory characteristics of the duck-extract were evaluated in this study. The duck-extract was formulated by the mixture of bone and internal organs of ducks and 6 medicinal herbs which were able to be used as foods and known to help the excretion and the repression of the poison inside the body for a long time. As we compared the six medicinal herbs mentioned above to the vegetable herbs, the nutrient profile of the medicinal herbs were superior to the vegetable herbs. The duck-extract was composed of protein 49.92%, carbohydrate 37.02%, dietary fiber 20.99%, lipid 7.60% and ash 5.46%. The ratio of Ca to P was 1 : 1.4, which was a suitable ratio for absorption, the contents of Na and K were low and those of micro-elements such as Fe, Mn, Zn and Cu high compared to other meat extracts. The essential amino acids accounted for 30.91% of total amino acids. The result of sensory evaluation was better in overall preferences than the ones which are already in the market. From these results, the nutrient profile of the duck-extract was estimated to be able to supply enough nutrients to the people whose nutritional balance was destroyed these days. This study also showed the effective way of using duck-extract and its application to the oriental medicine.

• 셀메드
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• 제7권3호
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• pp.13.1-13.10
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• 2017

Nutrition is one of the factors influencing cognitive functions. But, the role of nutrition on cognitive functions within the elderly is recognized to a lesser degree. The aim of this academic endeavor was to analyze the affiliation between nutritional status and cognitive functions of the elderly in Korea. 316 subjects, of 114 male and 201 female aged above 65 years, were gathered from university hospital clinics, Elderly Welfare Centers, and Health Welfare Centers located in the district of Seoul, Gyeonggi province, and Incheon in Korea. The cognitive function was tested by the Korean-Mini Mental State Examination (K-MMSE) questionnaire. Nutrition intake was assessed by a 24-hour recall, a food frequency questionnaire (FFQ). Nutrition adequacy and quality were assessed by the Nutrition Screening Initiative (NSI) checklist, the nutritional adequacy ratio (NAR), and the mean adequacy ratio (MAR). The elderly with normal cognitive function status displayed significantly higher levels of calcium, riboflavin, thiamin, folate, vitamin C, vitamin E, vitamin B6, phosphorous, potassium, iron, niacin, zinc, animal fat, animal protein, polyunsaturated fatty acids, total protein, vegetable oil, vegetable protein, fiber than levels of the elderly with moderate cognitive impairment. The K-MMSE score positively correlated with of high consumption of pork, white radish, sea mustard, tomato, tangerine, grape, apple, and ice cream, and K-MMSE was negatively associated with high intake of potato, anchovy, fish cake, and mushroom. The findings suggest that nutritional status is affiliated with cognitive function within the elderly of Korea. The consumption of variety of foods and nutrients ensures adequate cognitive function in the Korean elderly.

• 대한영양사협회학술지
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• 제9권2호
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• pp.97-105
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• 2003

The purpose of this study was to evaluate nutritional value of traditional fermented foods by dietary intake of university students living in Chungnam. 210 students were asked for their daily food intake using 24-hour recall method for 3 days. And daily nutrient intakes from total foods and fermented foods were analyzed and compared. The mean weight, height, and BMI of the subjects were 67.36㎏, 174.39㎝, 22.15㎏/$m^2$ in men and 53.45㎏, 161.86㎝, 20.40㎏/$m^2$ in women, respectively. The daily intakes of protein, phosphorus, and vitamin B1 were 106.82%, 137.88%, and 108.99% of the Korean RDA. However, the energy, calcium, iron, vitamin A, vitamin B2, niacin, vitamin C intakes did not reached the RDA for Koreans. The fermented food intake was 9.09% of total food intake. And the percentages of fermented food intakes were 81.53% for Kimchi and 14.75% for Chang. The vegetable protein, vegetable oil, dietary fiber, calcium, phosphorus, iron, sodium, potassium, vitamin A, vitamin B1, vitamin B2, niacin and vitamin C intakes per 1000㎉ consumption from fermented foods were significantly higher than those from total foods. The fermented food intake showed positive correlation with iron, and plant iron intakes. In conclusion, the percentage of fermented food intake was about 9% and the major items were Kimchi and alcoholi beverages in university students. Fermented food intake may be important to improve the intakes of calcium, iron and vitamin.

• 동아시아식생활학회지
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• 제7권2호
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• pp.199-210
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• 1997

The purpose of this study was to investigate the mutual relationship between food preference and nutrient intake status of high school students, based on the their personal characters which are sex, age, family type, number of family, mother's age, occupation, and school career. 439 students were selected with random stratified cluster sampling method. The study used a self-administrated questionnaire and 24-hour recall method for 5 days as instrument tools. Statistical methods applied to analyze the data were frequency, percent, Willcoxon Rank-sum test, Kruskal-Wallis test, ${x^2}-test$ by contingence table, and Spearman's correlation coefficient in non parametric statistical methods. Some of interesting results are as follows : 1. The correlation between sex and the set of characters of mother's age, school career and income is highly significant. However there is no any significant difference on the kinds of job and the types of family. 2. The relation between the preference of main dishes and the nutrient intake show a significant difference except to the noodles. This marks that preference of main dishes shows a direct proportion with the nutrient intakes except for the fat, vitamin A, vitamin C. 3. The preference of animal food marks a direct proportion with the nutrients such as energy, protein, fat, fiber, phosphorus, iron, vitamin $B_{1}$, vitamin $B_{2}$, and niacin 4. The preference of vegetable food gives some influence on the nutrient intake but the preference of soup is insignificant, the preference of Kimchi is in reverse proportion, and the preference of vegetable marks a direct proportion with the nutrient intake. 5. The preference of snacks marks a direct proportion with all kinds of nutrients intake except for the vitamin A, and vitamin C.

• 한국식품영양과학회지
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• 제42권2호
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• pp.223-233
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• 2013

본 연구는 광주 전남 곡성군지역 초등학생의 식생활 특성, 채소류 섭취에 대한 실태와 인식, 채소류에 대한 관심을 조사하여 채소류와 채소류 음식에 대한 관심과 섭취 증진을 위한 식생활 교육의 방향을 설정하는데 기초 자료를 제공하고자 하였다. 조사기간은 2010년 8월 20일부터 9월 10일까지 광주와 전남 곡성군지역 초등학교 5, 6학년 362명을 대상으로 일반적 특성, 초등학생의 식생활 특성, 채소류 섭취에 대한 실태와 인식, 채소류에 대한 관심을 설문지를 통해 조사하였다. 자료 분석은 SPSS(Statistics Package for Social Science, Ver. 18.0 for Window, SPSS Inc., Chicago IL, USA) 프로그램으로 통계 처리하여 분석하고, chi-square 검증을 실시하였다. 본 연구의 주요 결과를 요약하면 다음과 같다. 첫째, 초등학생의 식생활 특성에서는 식사속도(p<0.001)에서 남학생과 여학생 간에 유의한 차이가 있었다. 남학생은 '10~15분 미만'이 40.1%, 5~10분 미만이 25.7%로 가장 많았고, 여학생은 15~20분 미만이 36.7%, 10~15분 미만은 34.7%로 여학생의 식사 속도가 더 느린 것으로 나타났다. 식생활 방법 및 영양에 관한 정보는 가족에게서 얻는다가 가장 많았고 가정에서 식사를 준비해 주는 사람은 '어머니, 아버지'로 응답한 경우가 지역별, 성별에 관계없이 가장 많았다. 간식으로 자주 먹는 음식으로 광주지역은 과일류등 자연식품이 40.0%, 전남 곡성군지역은 패스트푸드, 가공식품, 인스턴트식품이 34.5%로 전남 곡성군지역이 패스트푸드, 가공식품을 더 많이 먹는 것으로 나타났고, 성별 간에는 과일류 등 자연식품이 남학생이 35.4%, 여학생이 39.4%로 가장 높게 나타났다. 지역별, 성별에 관계없이 식습관의 문제점으로는 '편식', 가장 싫어하는 식품군은 '채소류'라고 응답한 경우가 가장 많았다. 둘째, 초등학생의 채소류 섭취에 대한 실태와 인식 항목에서 지역에 따라서는 채소류 음식을 먹지 않을 경우 부모님의 태도에서 유의한 차이(p<0.05)가 나타났고, 성별에 따라서는 유의한 차이는 나타나지 않았다. 그러나 채소류 음식을 먹지 않을 경우 부모님의 태도에서 '채소류의 유익한 영양 성분을 설명해 준다'가 광주지역 43.8%, 전남 곡성군지역 40.4%, 남학생 39.4%, 여학생 44.3%로 가장 높게 나타났고, 채소류가 우리 몸에 미치는 영향에 대해서는 '영양가가 높아서'라고 응답한 경우가 광주지역 90.6%, 전남 곡성군지역 88.2%, 남학생 87.1%, 여학생 91.2%로 거주 지역별, 성별에 관계없이 채소류의 영양성분의 중요성에 대해서는 높이 인식하고 있었다. 셋째, 초등학생의 채소류에 대한 관심에서는 식이섬유에 대한 인식여부(p<0.01), 식이섬유의 역할(p<0.01), 친환경 채소류의 인증표 구별여부(p<0.01), 식이섬유가 치아에 미치는 영향(p<0.01), 가족과 함께 채소류 재배섭취 경험(p<0.001) 등의 항목에서 지역에 따라 유의한 차이를 나타냈다. 초등학생의 채소류에 대한 관심은 친환경 채소류의 인증표 구별여부와 가족과 함께 채소류 재배섭취 경험에서 전남 곡성군지역이 광주지역보다 더 관심이 많았으며, 이외에 모든 항목에서는 광주지역이 전남 곡성군지역보다 더 관심이 많은 것을 알 수 있었다. 성별의 경우 남 여학생 모두에서 친환경 채소류의 인증표 구별여부, 식이섬유가 치아에 미치는 영향을 알고 있는가에서 관심이 가장 적게 나타났고, 여학생이 남학생보다 채소류에 대한 관심이 더 많았다. 위와 같이 광주 전남 곡성군지역 초등학생들은 지역과 성별과 관계없이 자신의 식습관 중에서 편식을 가장 고쳐야 할 사항으로 인식하고 있었고 그 중에서도 채소류 영양성분의 중요성을 알고 있으면서도 가장 싫어하고 있는 식품군이었다. 이에 초등학생들의 채소류에 대한 관심과 섭취 증진을 위해서는 지역과 성별에 따른 맞춤 식생활 교육이 필요하다고 보인다. 지역의 특성을 고려하여 광주지역 초등학생들의 경우는 채소의 이름 알기, 전남 곡성군지역 초등학생들의 경우는 채소의 기능 알기 등으로 흥미를 가질 수 있도록 하고, 여학생보다 채소류에 관심이 더 적은 남학생들에게 더 많은 기회를 제공, 초등학생들이 정보뿐만 아니라 영향을 많이 받는 부모에게도 동시에 연계교육실시 등을 통하여 체계적이고 지속적인 교육이 이루어져야 할 것으로 보인다.

• 동아시아식생활학회지
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• 제24권1호
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• pp.28-41
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• 2014

식이섬유가 인체 내에서 나타내는 중요한 생리 기능은 각 구성 성분들의 함량과 특성에 의해 영향을 받으므로, 본 연구에서는 채소를 대상으로 식이섬유 각 성분들의 함량을 분별 측정하고, 열처리 시 변화를 조사하였다. 이상의 결과를 요약하면 다음과 같다. 각종 채소의 총 펙틴 함량은 건조물 기준으로 0.89~2.75 g/100 g의 범위였으며, 대부분 1~2 g/100 g 수준이었다. 펙틴의 각 분획 별 함량의 경우, 열수 가용성 펙틴 함량은 0.33~0.98 g/100 g, 인산 가용성 펙틴 함량은 0.29~0.81 g/100 g의 범위였고, 염산 가용성 펙틴 함량은 0.30~1.40 g/100 g의 범위로 세 가지 펙틴 분획 중에서 채소 종류에 따른 변이가 가장 컸다. 이상의 세 가지 펙틴 분획의 비율은 각 채소에서 대략 비슷한 수준이었다. 각종 채소의 불용성 식이섬유 함량은 건물 기준으로 총 불용성 식이섬유인 Neutral detergent fiber(NDF)는 11.8~31.9%, Acid detergent fiber(ADF)는 10.9~25.4%, cellulose는 8.8~23.8%, hemicellulose는 0.6~10.6%, lignin는 1.0~5.2% 범위였으며, 특히 고추류에서 총 불용성 식이섬유 함량이 높았다. Cellulose는 총 불용성 식이섬유인 NDF의 63% 정도를 차지하여 본 실험에 사용된 채소들의 경우, 불용성 식이섬유의 대부분이 cellulose로 구성되어 있었다. 가열 방법에 따른 펙틴 함량의 변화에 있어서, 총 펙틴 함량은 가열 처리 시 원료 시료에 비해 감소했으며, boiling시 가장 크게 감소하였다. 펙틴의 세 분획 중 열수 가용성 펙틴(HWSP) 함량은 증가했고, 비수용성 펙틴인 인산 가용성 펙틴(HXSP)과 염산 가용성 펙틴(HCLSP) 함량은 감소했다. 가열 처리에 의한 NDF, ADF, cellulose 함량의 변화는 원래 시료보다 증가했으며, 이들 성분들의 변화는 cellulose의 함량 변화에 기인했다. 그러나 hemicellulose와 lignin 함량은 일정한 경향을 보이지 않았다. 총 식이섬유 함량은 신선물 기준으로 1.20~7.11% 범위였으며, 마늘, 우엉, 고추잎 등에서 높았다. 총 식이섬유 함량의 대부분이 불용성 식이섬유로 구성되어 있음을 알 수 있었다. 총 식이섬유/조섬유 비율은 1.32~4.00으로 붉은 고추가 가장 낮고, 상치가 가장 높았으나, 채소 종류 간 큰 차이를 보이지 않았다.

• 한국약용작물학회지
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• 제19권2호
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• pp.111-116
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• 2011

The composition analysis and electron donating activity of 4 kinds of Korean wild sannamuls[Cacalia firma Komar. (CFK), Aster scaber Thunb. (AST), Ligularia fischeri (Ledeb.) Turcz. (LFT), Synurus palmatopinnatifidus (Makino) Kitam., SDN)] were investigated. The Korean edible mountainous vegetable was named a sannamul or chwinamul in Korea, generally. Most of them, the characterization of the each vegetable was reported, individually without comparative research. This study was compared the proximate compositions, mineral, dietary fiber and electron donating abilities on 2,2-diphenyl-1-picrylhydrazyl (DPPH) of sannamuls. In the chemical analysis of sannamuls, CFK was shown higher value in ash ($5.4{\pm}0.18%$), crude fat ($2.5 {\pm}0.14%$), carbohydrate ($8.1{\pm}0.21%$), potassium ($475.45{\pm}0.34mg$) and magnesium ($64.70{\pm}0.48mg$) than others. Each mineral of the 3 other samples was a similar value but phosphorus in LFT was contained $62.91{\pm}0.43%$. The compositions of total dietary fiber of the samples were listed CFK LFT SDN AST and the $RC_{50}$ Value on DPPH radicals, LFK CFT AST SDN. These results have susggest that CFK and LFT may be useful for a funtional material to food development.

• Journal of Nutrition and Health
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• 제41권6호
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• pp.539-549
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• 2008

This study was conducted to examine food and nutrient intakes of weekday and weekend with 329 high school boys residing in Seoul using the 3-day food record. Frequency for breakfast skipping was the highest as compared with lunch and dinner skipping. Frequencies for breakfast and lunch skipping were significantly higher in weekend than weekday (p<0.05). The daily average food, vegetable food and animal food intakes were 1,327.6 g, 800.5 g, and 425.8 g, respectively. Total food and vegetable food intakes of weekday were significantly higher than weekend(p<0.05). The dietary variety score(DVS) was 20.5 in daily average, 23.3 in weekday and 15.1 in weekend, which showed significantly higher in weekday than weekend(p<0.05). The daily averages of energy, protein, fat and carbohydrate intake were 2244.9 kcal, 89 g, 72.6 g, and 311.2 g, respectively. Fat intake was significantly lower and carbohydrate, fiber, phosphate, iron, sodium, potassium, vitamin A, niacin, folate, and vitamin C intakes were significantly higher in weekday than weekend (p<0.05). The percentages of energy intake from carbohydrate, protein, and fat were 55.4%, 15.8%, 28.8% in daily average, 56.8%, 15.8%, 27.4% in weekday and 53.6%, 15.8%, 30.7% in weekend, respectively. The percentages of energy intake from carbohydrate in weekday and weekend were below 60%, and that from fat was above 27% in weekday and weekend. Carbohydrate intake was significantly higher and fat intake was significantly lower in weekday than weekend(p<0.05). Energy intakes of daily average, weekday and weekend were above 83% as compared with estimated energy requirement(EER). Intakes of dietary fiber, calcium, potassium, vitamin C, riboflavin and folate were below 75% as compared with adequate intake(AI) or recommended intake(RI). Mean adequacy ratios(MAR), an index of overall dietary quality were 0.78 in daily average, 0.80 in weekday and 0.75 in weekend. MAR of weekend showed significantly lower than weekday(p<0.05). This study revealed that the overall nutrient intake status was worse in weekend than weekday among high school boys.