• 한국농공학회논문집
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• 제48권3호
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• pp.35-45
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• 2006

Fallow paddy areas have been increased due to the import of cheap agricultural product, and the unbalance between farming cost and rice price since 1990. In domestic, rice production control that decrease paddy field area has been introduced for the control of rice demand and supply and stabilization of rice price since 2003. Because of the desire of paddy field's owner to create benefit by using paddy for other object, fallow paddy would be continuously increased. In the other aspect, many people in the world is suffering from hunger because of the shortage of food. In case of Korea, continuous drought and flood damages will be potential concern of stable food supply. From this viewpoint, the increasing fallow paddy area needs to be protected from the devastation by weed breeding for the re-cultivation. In this study, fallow paddy managed with the shallow pools and shallows was selected fur monitoring and analyzing of water quality and plant body change. As the results, the managed fallow paddy found to be effective in the purification of water quality and the control of plant growth.

• 한국식품영양과학회지
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• 제27권3호
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• pp.406-412
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• 1998

Such extraction conditions as the kinds of solvent, extracting temperature, extracting time, ratio of material to solvent and particle size of material, were studied to maximize the extraction of oleoresin from chipi. Larger amount of soluble solids were extracted from seeds with nonpolar solvents (hexane, pentane, ether) for extraction, because the seeds contained large amount of crude fats and monoterpene(limonene) volatile compounds. Larger amount of soluble solids were extracted from peel with polar solvents(methanol, ethanol) of extraction because of large amount of water soluble colors, sugars and oxygenated terpene bolatile compounds in the peel. The application of the solvents in intermediate polarity (dichloromethane, acetone) resulted in more effective extraction of soluble solid and volatile compounds. Expecially, dichloromethane was an excellent solvent in extraction of volatile compounds. In the concern of volatile compound recovery yield, the optimum extraction conditions, such as temperature, time, mixing ratio of material to dichloromethane and mean particle size, were $25^{\circ}C$, 10min, 1:10(w/v), 355~250${\mu}{\textrm}{m}$ for chopi peels and 3$0^{\circ}C$, 10min, 1:8(w/v), 355~250${\mu}{\textrm}{m}$ for chopi seeds, respectively.

• 대한가정학회지
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• 제32권2호
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• pp.193-206
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• 1994

Thinness has become a symbol for beauty acceptance and competence for women in our society especially for young college women. Relatively little is known about characteristics of women who are dissatisfied with their shape or weight and who are interested in performing weight control program. Four hundred college women in Seoul and Kyunggi-Do area were surveyed from November to December 1992 to investigate the relationship between the concern about weight control and various aspects of food related behaviors. The purpose of this research was to investigate the relationship between the weight concerns of college women and their aspects of several eating behaviors. Self-developed questionnaire was used after validity test. The results were as follows: 1) The average height weight and BMI value of subjects were 160$\pm$4.5cm 51.02kg and 19.86$\pm$4.5 respectively. 2) The 49% of subjects were highly concerned about weight control(high interest group) and 39% were moderate concerned(moderate interest group). 3) The average BMI and weight change per year were significantly higher in the high interest group than other groups. 4) The score of nutrition knowledge was also higher in the high interest group, 5) There were no significant differences among groups in the meal frequencies. and amount of nutrients intake. 6) The signs of eating trouble were found in subjects 59.0% of subjects felt feareness about weight gain after consumption of large amount of food. 7) The ratio of CPF was 64:14:22 and nutrient adquacy ratio(NAR) of energy was 0.94 NAR of Fe was 0.84 the other NAR of nutrient over 1.0.

• 한국환경농학회지
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• 제35권1호
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• pp.55-61
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• 2016

다년생 근채류인 인삼, 산양삼, 더덕, 도라지의 중금속 함량 실태조사를 통해 우리나라 국민의 식품 섭취로 인한 중금속 노출수준에 따른 위해성을 평가하였으며, 이를 위해 총 214건을 수거하였다. 근채류 중 납, 카드뮴 및 비소 함량분석을 위해 microwave장치를 이용해 전처리한 후 ICP/MS로 측정하는 시험법을 확립하였다. 중금속의 검출한계는 0.010~0.050 μg/kg이었으며 정량한계는 0.035~0.175 μg/kg이었다. 표준용액 첨가법과 CRM을 이용하여 회수율을 실험한 결과, 76~102%의 양호한 결과를 얻었다. 다년생 근채류 중 납 함량은 평균 0.013(인삼)~0.070(산양삼) mg/kg이었고, 카드뮴 함량은 평균 0.009(인삼)~0.034(더덕) mg/kg이었으며 비소 함량은 평균 0.002(인삼)~0.004(도라지) mg/kg이었다. 다년생 근채류 섭취에 따른 중금속 위해성 평가를 수행한 결과, 중금속 노출량은 각각 Pb 0.070 μg/day, Cd 0.041 μg/day, As 0.008 μg/day으로 인체섭취한계량의 0.03%, 0.08%, 0.0003% 수준이었다. 따라서, 국내 유통되는 인삼, 산양삼, 더덕 및 도라지 섭취로 인한 중금속 노출수준은 JECFA 등의 인체노출안전기준보다 매우 낮았으며 우리나라 국민은 다년생 근채류에 존재하는 중금속의 위해성으로부터 안전하였다.

• 한국지역사회생활과학회지
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• 제15권1호
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• pp.35-47
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• 2004

This study investigated the health and eating habits of college students who commute long distances to and from their schools. Among ninety-eight commuters, 61.2% were females while 38.8% were males. The mean round-trip commuting time was 4.60 hours and the mean number of days of commuting was 3.68. The proportion of underweight females (26.7%) was significantly greater than that of underweight males (5.3%). Conversely, the proportion of overweight males was 34.2% while only 1.6% of the females were overweight, and the difference was statistically significant. The mean number of health-related problems was 1.47 for males and 1.90 for females. Commuting affected the eating habits (90.8%) and health status more noticeably among females. Physical discomfort such as fatigue, stomach discomfort, constipation, weight change, and insomnia appeared after commuting. Irregular meal times, skipping breakfast, frequent overeating and insufficient time to eat were the most prevalent problems indicated. The scores for dietary attitude and eating habits were 20.1/30 and 27.6145, for males and females respectively. Although self-perceived nutrition knowledge was significantly related to dietary attitude and satisfaction with meals, a correlation was not found between self-perceived nutrition knowledge or dietary attitude and the eating habits score. The more concerned the parents were about student's eating habits, the higher the score relating to eating habits. The parents' concerns about students' meals and the food expenses were significantly correlated, but no correlation was found between the food expenses and the eating habits score. Consistent parental concern and encouraging students to maintain good eating habits are recommended. University administrators should also be aware of the needs of commuters and provide a proper and adequate food-related environment for the students.

• 한국식품조리과학회지
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• 제20권6호
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• pp.589-597
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• 2004

This study was conducted to investigate the effects of various kinds of electrolyzed and chlorinated waters on the sensory and microbiological qualities of fresh-cut lettuce and to determine the most suitable electrolyzed water for the vegetable dishes, without heat treatment, at institutional foodservices. The sensory evaluation resulted in higher scores on the 1st-day of storage for the EW-1 (diaphragm type 1) and EW-3 (non-diaphragm type) compared to that for EW-2 (diaphragm type 2), with regard to their appearance, discoloration, texture, taste and overall acceptability characteristics. However, over time, EW-3 ranked highest, with a score of 8.00 (very like), on the 4th-day of storage, which maintained the highest level up to the 7th-day of storage, at which time the score was 7.00 (fairly like). The CW (chlorinated Water) had a significantly lower score, due to the smell of chlorine, although there was no concern with relation to chlorine residue from the electrolyzed waters. Microbial examinations of the total plate count revealed that immersing lettuce into EW-3 brought about l/3,000 to 1/30,000 reductions in the microbial counts of the TW treatment or untreated samples for up to seven days of storage. The CW treatment gave a 1/10 reduction in the microbial counts compared with the TW (tap water) treatment. The coliform bacterial counts also showed similar trends to those of the total plate count values. With regards to the psychotropic bacterial count, EW-3 was able to result in as much as a 1/30,000 reduction in the initial counts. As vegetable dishes, such as salad, can not be heat-sterilized, the utilization of EW-3 for the preparation of vegetable dishes without heat treatment will be an excellent choice to improve the critical control point in production state as a new effective means for sanitizing management.

• 한국식품조리과학회지
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• 제31권2호
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• pp.112-117
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• 2015

The analytical method for ethyl carbamate (EC) in maesil (Prunus mume) extract was developed with deuterium-labeled ethyl carbamate as an internal standard. Samples were neutralized with an addition of 1 N sodium hydroxide solution, followed by a solid phase extraction with a Chem Elut cartridge. A standard curve exhibited a good linearity with correlation coefficient of 0.9991. The limit of detection (LOD) and limit of quantification (LOQ) were 2.91 ng/g and 8.83 ng/g, respectively. The recovery rate of EC ranged from 91.40% to 120.90%. The precision never exceeded 12.57% (intra-day) and 11.03% (inter-day). Samples were comprised of 24 home-made and 7 commercially-available maesil extracts. Eight home-made samples contained EC at levels between 3.39 and 75.76 ng/g. Three commercially-available samples had EC at levels between 11.67 and 20.16 ng/g. Average daily intakes of EC from maesil extracts for consumers were 0.23 g/kg of body weight. Based on a benchmark dose confidence limit ($BMDL_{10}$) of 0.25 mg/kg of body weight/day, the margin of exposure (MOE) of EC in maesil extract for consumers was 94,150, which is not of concern. Considering that a daily intake of maesil extract has been increasing, further studies on the formation of EC in maesil extract is needed.

• 한국식품조리과학회지
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• 제21권4호
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• pp.490-495
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• 2005

튀김으로 조리하는 대표적인 식품인 돈까스를 통해 지방섭취를 줄이고 칼로리를 낮출 수 있는 조리방법을 제안하기 위해 본 연구를 수행하였으며 그 결과는 다음과 같다. 돈까스를 기름에 튀기는 Frying보다 Oven baking으로 조리한 돈까스의 일반성분 분석에서 기름에 튀긴 돈까스보다 오븐에 구운 돈까스의 지방함량이 낮게 나타났고(p<0.05) 물성과 색도에서도 Frying과 Oven baking은 대부분의 항목에서 유의적인 차이가 있었다. 특히 칼로리 분석에서 Oven baking 조리한 돈까스는 Frying으로 조리한 돈까스보다 약 $10\%$가량의 칼로리가 낮은 (p<0.05) 경향을 보여 일반성분 분석, 관능테스트 결과와 일치하였으며 식이요법을 요하는 사람들에게 권장 할 수 있는 조리방법이라 사료된다. 하지만 관능테스트에서 전통적인 튀김방식의 돈까스가 다즙성과 전체적인 맛에서는 오븐에 구운 돈까스보다 다소 우수한 결과를 보였다.

• 한국식품영양학회지
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• 제21권2호
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• pp.218-226
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• 2008

This study examined the preference and consumption of chungkukjang among elementary school children in Seongnam, Korea. The subjects included 583 students(male 300, female 283) who were asked to fill out a questionnaire. The collected data were analyzed using the SAS package. The results showed that 91.9% of the female students, 91.6% of children from nuclear families, and 90.7% of children with stay-at-home mothers, consumed chungkukjang. Among the children who had eaten chungkukjang previously, most had consumed it at home, and 65.5% of the students responded that chungkukjang was tasty. The data also revealed that female students, children from nuclear families, and those with stay-at-home mothers had greater preference for chungkukjang than male students, children from extended families, and those with working mothers. When asked why they dislike chungkukjang, both male and female students who had eaten it responded because 'it smells bad' and that 'it is not tasty'. However, among the students who had never eaten it, the male students replied because 'it is not tasty'(33.3%) and that 'it is not eaten at home'(27.8%), and the primary responses of the female students were 'it is not eaten at home'(65.2%) and 'it is not tasty'(21.7%). However, the subjects who had tried chungkukjang previously answered that in the future they would like to have it more frequently, as compared to the subjects who had never eaten chungkukjang. Therefore, to increase knowledge and improve perceptions of chungkukjang foods, families should give children many opportunities to try them, and in return, children will consume chungkukjang foods with pride. Furthermore, it is important that society as well as mass media, which have great influence on children, show concern and offer support in promoting chungkukjang.

• 대한가정학회지
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• 제38권12호
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• pp.29-45
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• 2000

The purposes of this study were to determine what factors influence risk perceptions of females and males for milk produced using food-related biotechnology, to test whether risk perceptions or other factors influence self-protection actions and to estimate milk demand response in light of self-protection actions and other economic and demographic factors. The expected utility model was applied to explain the way consumers would take self-protection actions regarding risk perceptions and to drive milk demand. Telephone interviews were conducted and the data were collected from households(females=1,029, males=437) nationwide in the U.S. And the data were analyzed by Heckman two-step method using the software package LIMDEP. Risk perceptions were found to be influenced not by demographic factors but by outrage factors as well as attitudinal factors in both females and males, although some factors were different. In addition, risk perceptions and labeling availability were found to significantly influence self-protection actions in both groups. Furthermore, as an important concern in this study, self-protection action was found to significantly influence milk demand in only male group, implying a consistent behavior of males. Also milk price and household size were found to significantly influence milk demand in both groups. In fact, the results did demonstrate that labeling availability significantly influenced self-protection actions. That is, in markets where labeled laternatives were present, concerned consumers were more likely to self protect by substituting to these products. A policy implication of this result is that labeling food products produced using biotechnology enhances consumer choice. Hence, consumer could express a more accurate demand response and reduce the perceived food safety risk. Furthermore, education for females might be necessary to have a consistent behavior because self-protection action did not significantly influence female's milk demand, though they have greater risk perceptions than males have.