• 대한지역사회영양학회지
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• 제6권5호
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• pp.773-788
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• 2001

The purpose of this study was to investigate the difference in nutrient intake according to the level of self-perception of health status, aging status and life satisfaction of the rural elderly. The factors for the study were surveyed by interview method. The subjects were 270 people(71 male, 129 female) aged over 65 years(73.5 $\pm$ 5.6ys) in the Ham-an area. The obtained results as follows : By evaluation of self-perception of health status, 57.5% of subjects answered they are in a bad health condition. The 91.5% of subjects had diseases(rheumatitis & arthritis 31.4%, cardiovascular disease 20.2%, gastric disease 10.2%). The women had more diseases than the men(p < 0.01). The subjects took medical treatment in private hospital(40.5%) and public health centers(35.0%). The men showed better level of aging status(p < 0.001) and life satisfaction index(p < 0.01) than the worsen. Living with spouse influenced the aging status(p < 0.05) and the more pocket money influenced life satisfaction(p < 0.05) and aging status(p < 0.05). The elderly who eat regularly 3 times a day(p < 0.05) and have a good appetite(p < 0.001) appeared to have positive effect on the self perception of health status and aging status. An increasing level of the self-perception of health status and regular exercise worked to improve aging status(p < 0.001). The habits of smoking and alcohol drinking, however had no effect on any index. The self-perception of health status affected the nutrient intake, but only in female elderly. The aging status and the life satisfaction index related overall positively to the intake of nutrients. In conclusion, the study shows that gender did influence nutrient intake in the elderly. The women who live alone rated lowest in social resources and health condition therefore their nutrient intake was also extremely in deficit. For successful aging, a program for rural elderly is needed, i.e. actions to provide minimum economic life, food delivery and psychological/physical health care through regional public health centers.

• 대한지역사회영양학회지
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• 제19권2호
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• pp.133-141
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• 2014

Objectives: The purpose of this study was to estimate the prevalence of metabolic syndrome (MS), metabolic abnormalities, and nutrient intakes in Korea children and adolescents using the Korea National Health and Nutrition Examination Survey from 2008. Methods: A sample of 838 children and adolescent males (n=442) and females (n=396) aged 10-18 was used from the 2008 Korea National Health and Nutrition Examination survey. The diagnosis of the metabolic syndrome subjects was adapted from modified National Cholesterol Education Program-Adult Treatment Panel III by Ford. To compare nutrient intakes, we used a judgment sampling. The first group was composed of all children and adolescents (n=46) with MS. The second one along with the first group had children and adolescents with the same age, sex, and body mass index (BMI) but without MS (n=46). The control group like the first two had children and adolescents with same sex and same age but with normal BMI and without MS (n=46). Results: In this randomized controlled controlled trial, the prevalence of the metabolic syndrome was 5.8%. The risk factors was associated with the MS were abdominal obesity 9.4%, hypertriglyceridemia 25.0%, low HDL-cholesterol 10.3%, hypertension 23.4%, and hyperglycemia 7.1%. Among metabolic abnormalities, blood pressure was significantly affected by sex, age and obesity. On the other hand, HDL-cholesterol, triglycerides, and waist circumference were directly linked to obesity. There were no significant differences in nutrient intakes among the three groups. Conclusions: The prevalence of MS was higher in children (10-11 years old) than in adolescents (12-18 years old). There was a difference in hypertension among risk factors by gender, and there were no significant differences in nutrient intakes.

• 한국유기농업학회지
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• 제19권spc호
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• pp.17-20
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• 2011

Plant biomass is a huge carbon-complex that has potential as a nutrient. Therefore we extracted and separated useful materials for plant growth from tea leaf and stem. The pre-treatment process including high temperature ($200^{\circ}C$) and pressure (20-40 kgf/$cm^2$) was treated for several minutes and extracted at $120^{\circ}C$ for 30-60 minutes. After that the chemical compositions and ingredients were analyzed from that plant-nutrient. As a result of mineral contents, calcium and magnesium concentrations are higher than other minerals. Also the result of carbohydrates analyses has shown that the sugar oligomer consists of xylose(95.3%) and glucose(4.7%), and the sugar monomer consists in the order of xylose (52.7%) > manose (22.8%) > arabinose (10.8%) > galactose (10.2%) > glucose (3.5%). Before applied to field, in vitro plant growth system and formulation were examined. To evaluate the effect of the nutrients, both strawberry green-house and persimmon fields were used in this test. The treated persimmons were heavier than controls scored at 13-22%. In addition, the storage-period was extended in the treated strawberries. Interestingly in the treated strawberry, the contents of polyphenols were increased (38-57%). These results suggest that the plant-nutrient can afford to help for plant growth and storage, and it can be substituted for other commercial nutrients. In conclusion, this plant-nutrient may help to extend eco-friendly or organic farming in Hadong-gun area.

• Asian-Australasian Journal of Animal Sciences
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• 제32권6호
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• pp.849-855
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• 2019

Objective: This study was conducted to compare growth performance, nutrient digestibility and meat quality of broilers fed a genetically modified organism (GMO) diet or a non-GMO diet. Methods: A total of 840 broilers with an initial body weight of 43.03 g per chick were randomly allocated into 1 of the following 2 dietary treatments lasted for 32 days (15 broilers per pen with 28 replicates per treatment): i) Trt 1, GMO maize-soybean meal based diet; ii) Trt 2, non-GMO maize soybean meal based diet. Both diets were maize-soybean meal diets. The GMO qualitative analysis, proximate analysis and amino acid analysis of the feed ingredient samples were carried out. Diets were formulated based on a nutrient matrix derived from analysis results. Growth performance was measured on day 0, 7, 17, and 32. And all other response criteria were measured on day 32. Results: The analysis results showed that the total Lys, Met, Thr of non-GMO grains were lower than that of GMO grains, the protein content of GMO soybean meal was higher than that of non-GMO soybean meal. Feed intake and feed conversion rate (FCR) were greater (p<0.05) in broilers provided with non-GMO diet than that of the GMO group from d 17 to 32. A decrease in FCR was observed in birds fed the GMO diet through the entire experiment (p<0.05). No significant impacts on blood profile, meat quality and nutrient digestibility were found in response to dietary treatments throughout the experimental period (p>0.05). Conclusion: These results indicated that non-GMO diet showed a negative effect on growth performance but nutrient digestibility, blood profile, carcass weight and meat quality were not affected by non-GMO diets.

• 농업과학연구
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• 제49권3호
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• pp.643-653
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• 2022

This study investigated which nutrient solution is suitable for growth and secondary metabolite contents when three different vegetable plants are grown simultaneously in one hydroponic cultivation bed. Seeds of pak choi (Brassica compestris L. ssp chinsensis), red mustard (Brassica juncea L.), and arugula (Eruca sativa Mill.) were sown in the shape of a triangle in three places on rockwool cubes. The rockwool cubes were placed in semi deepflow technique (semi-DFT) hydroponic systems in a rooftop greenhouse after three weeks of growth as seedlings then cultivated with four different nutrient solutions, Korea Horticultural Experiment Station (KHE), Hoagland, Otsuka-A, and Yamazaki, at the rooftop greenhouse for two weeks. The leaf area of pak choi cultivated in Otsuka-A was the largest but SPAD values, leaf area, and fresh weight of arugula were highest with KHE treatment. The total glucosinolate (GSL) content of pak choi was 151.7% higher in KHE than in Hoagland, and there was no significant difference in Yamazaki and Otsuka-A treatments. The total GSL content of red mustard was 34.6 μmol·g^-1 in Hoagland, and it was 32.6% higher in Hoagland than in Yamazaki. Total GSL content of arugula was 57.5% higher in Yamazaki and Hoagland nutrients than in KHE and Otsuka-A nutrients solutions. The total GSL content of three plants grown with KHE was 40.7% higher than with Yamazaki, and the other nutrient solutions did not show significant differences. Therefore, KHE nutrient solution is considered suitable for nutrient solution composition for the cultivation of three different Brassicaceae crops in a single hydroponic cultivation system.

• 환경생물
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• 제27권2호
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• pp.191-197
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• 2009

신갈나무의 생태적 특성을 밝히기 위하여 유식물의 주요 환경요인 중 광, 수분과 영양소를 각각 4구배로 처리하고, 2007년 3월~10월까지 양묘하여 17가지의 형태 및 생태형질을 측정하여 생태적 지위폭을 계산하였다. 그리고 이 지위폭과 상수리나무와 굴참나무와의 생태적 중복역을 비교분석하여 3종의 분포적 특성과 경쟁관계를 생태적으로 해석하고자 하였다. 신갈나무의 생태적 지위폭은 환경요인 중 영양소구배에서 가장 낮았고, 수분구배에서 가장 높게 나타났다. 광구배에서는 그 중간이었다. 신갈나무는 광환경에 대해서만 상수리나무나 굴참나무보다 생태적 지위폭이 큼으로써 이는 3종의 참나무가 경쟁시 광환경에서는 신갈나무가 우월하며, 또한 한반도에서 신갈나무가 우점하는 원인 중의 하나가 광환경에 대한 높은 적응력일 수 있음을 의미하는 것이다. 신갈나무-상수리나무와 신갈나무-굴참나무의 생태적 중복역은 수분구배에서 가장 넓었고, 영양소구배에서 가장 좁게 나타났다. 광구배에서는 그 중간이었다. 이는 참나무 3종이 영양소환경이나 광환경에 대해서는 서로 간 생태적 분화가 수분 환경보다 상대적으로 많이 일어났음을 뜻한다. 유집분석과 주성분분석을 이용한 참나무 3종의 환경구배에 대한 반응에서는 신갈나무-상수리나무 간의 공간적 위치는 신갈나무-굴참나무 간의 위치보다 서로 가깝게 배열되어 나타났다. 이상의 결과는 신갈나무와 상수리나무는 생태적 지위가 유사하여 환경요인, 특히 수분환경에 대한 경쟁이 신갈나무와 굴참나무에 비해 더 심하게 일어남을 의미한다.

• Fisheries and Aquatic Sciences
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• 제11권1호
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• pp.15-22
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• 2008

Excessive growth of phytoplankton is a common and severe problem in intensively farmed pangasiid catfish (Pangasius hypophthalmus) culture ponds. It can lead to cyanobacterial blooms, reduced fish growth, bad-tasting fish flesh, and lower market demand. To investigate how to manage undesirable phytoplankton growth, we evaluated three stocking strategies in nine rural fishponds (0.020-0.022 ha) owned by various farmers: a pangasiid catfish mono culture (treatment 1, $T_1$), and pangasiid catfish-silver carp (Hypophthalmichthys molitrix) polycultures at two stocking ratios of 1:1 (treatment 2, $T_2$) and 2:1 (treatment 3, $T_3$). The total density of all ponds was approximately 30,000 fishes/ha. Monoculture ($T_1$) resulted in significantly higher (p < 0.05) nutrient levels (nitrate and phosphate) in ponds than did polyculture ($T_2$ and $T_3$). Nutrient loads increased with culture time, resulting in increased growth of phytoplankton, including Cyanophyceae (9 genera), Chlorophyceae (15 genera), Bacillariophyceae (8 genera), and Euglenophyceae (3 genera). The introduction of silver carp as a co-species helped to regulate phytoplankton growth and to improve the water quality of pangasiid catfish culture ponds.

• 한국환경과학회지
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• 제24권9호
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• pp.1189-1197
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• 2015

The aim of this study was to investigate the nutrient removal using Mg-Sericite flocculant in the dyeing wastewater. Mg-Sericite flocculant was removed successfully > 98% of the Color, SS. COD and BOD in the dyeing wastewater at the following optimal Mg-Sericite dosage: 100 mg/L for Colour and SS, 300 mg/L for BOD and COD. The removal of TN and TP was obtained 92.00% with 50 mg/L and 87.80% with 100 mg/L Mg-Sericite dosage, respectively. These results was indicated that the amount of 0.79~1.31, 0.22~0.37, 0.5 and 0.16 mg/L Mg-Sericite was necessary for 1 mg/L removal BOD, COD, TN and TP, respectively. The biopolymer, Mg-Sericite, can be a promising flocculants due to its high efficiency and low dose requirements. In addition, Mg-Sericite does not contaminate treated wastewater, which can be recycled to reduce not only the cost and the demand for water but also the extra operational costs for reusing wastewater. This flocculation method is helpful to lower the wastewater treatment cost.

• 생물환경조절학회지
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• 제26권4호
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• pp.424-431
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• 2017

최근 국내에서 육성된 딸기 신품종 '베리스타'와 '죽향'의 수경재배 시 생육 단계별 적정한 양액 농도가 품질과 생산성에 미치는 영향을 구명하기 위하여 연구를 수행하였다. 길이 40m, 폭 10m의 플라스틱 온실 내에 높이 1m, 폭 33cm의 수경재배용 베드를 설치하고 원예용상토를 충진한 후 '설향', '베리스타', '죽향' 묘를 정식하였다. 배양액은 네덜란드 PBG 배양액을 사용하였으며, 생육 단계를 생육초기-개화기-수확초기-수확후기로 나누어 처리 2는 '설향' 기준 급액 농도 EC $0.68-1.0-1.2-1.0dS{\cdot}m^{-1}$, 처리 1은 30% 낮은 농도인 EC $0.68-0.8-0.85-0.7dS{\cdot}m^{-1}$, 처리 3은 30% 높은 농도인 EC $0.68-1.2-1.55-1.3dS{\cdot}m^{-1}$으로 급액 하였다. 재배기간 동안 딸기품종별 생육과 수량 등을 조사하였다. '베리스타'는 2번 처리구와 3번 처리구 간의 지상부 생육에 차이가 없었으며, '베리스타'와 '죽향' 모두 양액 농도가 높을수록 엽색이 짙었으나 양자 효율은 차이가 나지 않았다. '죽향'은 급액농도에 따라 3월 이후 생육 후기에 생육 차이가 뚜렷하였고, 3번 처리구에서 가장 생육이 왕성하였다. '베리스타'와 '죽향' 모두 과중, 과장, 과폭 및 과실 경도가 3번 처리구에서 유의하게 높은 값을 나타냈다. 수확과의 총 당 함량은 처리 간에 차이가 없었으나 환원당과 비환원당의 조성 비율은 처리별로 다르게 나타났다. 수량을 조사한 결과, '베리스타'는 급액 농도가 높아질수록 수확과의 수가 많았으나 수량은 처리별로 큰 차이가 나타나지 않았다. 반면, '죽향'은 급액농도 간에 뚜렷한 차이를 보였으며, 3번 처리구에서 가장 수확량이 많았다. 생육 특성과 과실 품질을 종합적으로 고려해 본 결과, '베리스타'는 '설향' 표준 급액농도와 동일하게 EC $0.68-1.0-1.2-1.0dS{\cdot}m^{-1}$로 관리하는 것이 경제적이며, '죽향'은 '설향' 기준 급액농도보다 30% 높은 EC $0.68-1.2-1.55-1.3dS{\cdot}m^{-1}$로 공급해 주는 것이 고품질의 과실을 많이 수확할 수 있는 방법으로 판단된다.

• Asian-Australasian Journal of Animal Sciences
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• 제25권9호
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• pp.1294-1299
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• 2012

A total of 96 pigs ($49.23{\pm}3.20$ kg) were used in an 11 wk growth trial to evaluate the effect of fermentable carbohydrate (FC) content on growth performance, apparent total tract digestibility (ATTD) of nutrient, blood profile, and meat quality. The dietary treatments were: i) negative control (NC), basal diet, ii) positive control (PC), NC+antibiotics (positive control diet with 5 ppm flavomycin), iii) PCL, PC-13% lower FC, and iv) NCL, NC-13% lower FC. The growth performance (average daily gain, average daily feed intake, and gain/feed) didn't differ among treatments through the whole experiment. These pigs fed the PCL diet had the greater (p<0.05) apparent total tract digestibility (ATTD) of dry matter than those from PC and NC treatment at the end of the experiment. No differences were observed in white blood cell (WBC), red blood cell (RBC), and lymphocyte concentration among different treatments. After the feeding period, meat samples were collected from the pigs at slaughter. The pigs in NCL and PCL treatments had greater (p<0.05) backfat thickness and lower lean percentage. The color value of loin was higher (p<0.05) in NCL treatment compared to PCL treatment. Also, the NCL treatment had higher (p<0.05) marbling value than PC treatment. The drip loss was depressed by PCL and NCL treatment comapared to NC treatments. The water holding capacity (WHC) was higher (p<0.05) in NC and PCL treatment. In conclusion, the low FC can improve digestibility and meat quality of finishing pigs.