• Journal of Microbiology and Biotechnology
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• 제16권8호
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• pp.1248-1254
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• 2006

The effect of Spirulina platens is and probiotics as feed additives on the growth of the shrimp Fenneropenaeus chinensis was investigated in comparison with a control. The shrimp were cultured in rearing tanks in a seawater pond for 35 days from September 1, 2004. As regards the water quality, the probiotic treatment (T2, commercial diet and 3% probiotics) produced a lower TDN (total dissolved nitrogen) and TDP (total dissolved phosphorus), making it effective in water quality improvement. Nonetheless, the phytoplankton flora succeeded from diatoms to cyanobacteria, regardless of the feed additives. Treatment T3, including 3% S. platensis, produced the highest mean body weight, which was 39% higher than that for all the other treatments (P<0.05). Accordingly, it was found that the use of Spirulina and probiotics as feed additives increased the shrimp body weight and improved the water quality, respectively.

• Parasites, Hosts and Diseases
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• 제22권2호
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• pp.190-202
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• 1984

In an attempt to clarify the epidemiological feature of distomiasis in Tongjin riverside area, the prevalence of distomiasis in the residents and infection rates of the metacercariae in fresh-water fishes were investigated at the upper, middle and lower reaches of the river from January to April, 1984. The results obtained were summarized as follows: 1. Out of a total of 931 fresh-water fishes which composed of 33 different species, 611 fishes(65.6%) of 31 species were found positive with digenetic trematode metacercariae of 16 different species, and there were some differences in infection rates of the metacercariae among the fishes in the 3 parts of the river; 53.8% in upper, 80.7% in middle, and 61.0% in lower reaches, respectively. 2. Infection rates of the metacercariae of Exorchis oviformis, Metagonimus yokogawai, Echinochasmus japenicus, Metorchis orientalis and Clonorchis sinensis in the fishes were 48%,29%, 115, 7.9% and 6.3oA, respectively. 3. The average number of the encysted larvae of Clonorchis found in fish body/gram showed 4.44 in Pseudorasbera larva, Gnathepegon coreanus (1.2), Microphysogoio yaluensis (0.76), Abbottina springeri (0.4), Acanthorhodeus asmussi (0.21) and Cultriculus eigenmanni (0.17), respectively. 4. The average number of the metacercariae of Metagonimus found in fish body/gram disclosed 34.01 in Zacco platypus, Zacco temmincki (16.46), Carassius carassius (5.35), Moroco oxycephalus (1.54) , Aphyocypris chinensis (1.5) and etc., respectively. 5. Detection rates of the eggs of Clonorchis and Metagonimus among residents were 1.1% and 0.8%, respectively, out of a total 923 Persons.

• 한국식생활문화학회지
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• 제19권1호
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• pp.52-60
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• 2004

This study was performed to investigate the effect of Lycii fructus beer on serum lipid profiles and antioxidant activity in rat Sprague-Dawley (SD) rats weighting about 190g were divided into the following 5 groups ; distillate water (Control), 5% ethanol in distillate water (Ethanol), commercial beer (CB), Lycii fructus beer (LFB) and 5% alcohol red wine diluted with distillate water (RW). Body weight, total food intake, FER and percent organ (liver, kidney) weight per body weight were not significantly changed by Lycii fructus beer drinking. After 6 weeks, serum total cholesterol, triglyceride and HDL cholesterol level were not significantly different. But, Lycii fructus beer intake tended to decrease serum triglyceride level and atherogenic index. Also, GOT and GPT levels were expressed lower than Ethanol group. There was not significantly different in hepatic glutatiione (GSH) content and glutathione-S-transferase (GST) activities among 5 groups. Lipid peroxidation in the hepatic was decreased by Lycii fructus beer intake. The results demonstrated that Lycii fructus beer was potential and effective antioxidant that can protect the decrease associated with alcohol.

• 한국식품영양학회지
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• 제30권4호
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• pp.665-672
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• 2017

The anti-diabetic effect of dried-silkworm Dongchunghacho water extracts was investigated in streptozotocin (STZ)-induced diabetic rats. Seven-week-old SD rats were randomly assigned to six groups: normal control (NC) group, diabetic control (DC) group, water extracts of Paecilomyces japonica grown on a dried-silkworm (PJ-DS, 50 mg/kg) group, PJ-DS (250 mg/kg) group, water extracts of Cordyceps militaris grown on a dried-silkworm (CM-DS, 250 mg/kg) group, and water extracts of dried-silkworm (DS, 250 mg/kg) group. These groups were orally provided with sample dissolved in water respectively for four weeks after an injection of STZ (60 mg/kg, ip) followed by identification of diabetic control (DC) group. After four weeks, body weight of all diabetic groups was significantly lower than that of the normal control (NC) group, but among diabetic groups there were no significant differences. Blood glucose levels of the PJ-DS (50 mg/kg), PJ-DS (250 mg/kg), CM-DS (250 mg/kg) and DS (250 mg/kg) groups were reduced compared to the DC group by 3.0 percent, 18.5 percent, 6.9 percent and 13.1 percent, respectively. Concentration of total cholesterol and triglyceride in blood plasma were to some degree decreased in PJ-DS (250 mg/kg) and DS (250 mg/kg) groups compared to the DC group. According to these results dried-silkworm Dongchunghacho water extracts (PJ-DS) boost protection against STZ-induced toxicity.

• Journal of Radiation Protection and Research
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• 제8권2호
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• pp.8-14
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• 1983

삼중수소의 단일 피폭과 만성피폭에 의한 한국인의 내부피복 선량을 삼단계형모델을 이용하여 계산하였다. 이 모델은 체내수분과 조직체 사이의 삼중 수소의 축적량을 잘 나타내 주는 것이다. 그 결과 삼단계형의 축적 반감기 9, 30과 450일을 사용한 단일 피폭의 총 선량은 1mCi/kg 섭취당 17.64mrad였고 이것의 97%는 체내수분에 있는 삼중수소에 의한 선량이고 나머지 3%는 조직내 삼중수소에 의한 것이다. 그리고 1 mCi/day의 삼중 수소를 섭취하는 만성 피폭의 경우, 총 선량은 85.5mrad/day이었다. 또한 본 연구에서는 한국인에 대한 최대허용 농도값을 선질계수 1을 사용하여 계산하였다. 그 결과, ICRP의 최대허용 농도값은 약 50%가량 낮게 평가되었으므로 한국인의 최대허용 농도값은 ICRP의 결과보다 약 50%높게 책정되어야만 한다.

• 동아시아식생활학회지
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• 제9권3호
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• pp.302-314
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• 1999

This study was conducted to evaluate nutrient intake, indices of anemia, serum lipids, and their correlations in 40 Korean female college students aged 21 to 25 years. Fasting blood samples were collected in October. 1997 Nutrient intake was investigated by 24-hour recall method for three days. Anthropometric measurements, blood pressure, iron status and serum lipids of the subjects were determined. The mean values for age. height, weight, BMI and blood pressure of the subjects were 22.1 years, 160.6cm, 54.4kg and 109.1/66.9mmHg, respectively. According to the body composition analysis, total body water, % body fat, lean body mass and WHR were 26.7L. 29.5%, 36.5kg and 0.8, respectively. Average daily intake of energy was 1,858.4kcal. Protein, phosphorus, vitamin B$_1$, vitamin B$_2$, niacin and vitamin C intakes were higher than the Korean recommended dietary allowence(RDA), whereas calcium, iron, vitamin A intakes were tower than that. Hemoglobin(Hb), hematocrit(Hct), serum iron(SI) and total iron binding capacity(TIBC) were measured and transferrin saturation (TS%) was calculated from serum. The mean values for Hb, Hct, SI, TIBC and TS were 13.6$\mu\textrm{g}$/㎗, 41.6%,97.8$\mu\textrm{g}$/㎗, 319.6$\mu\textrm{g}$/㎗ and 31.9%, respectively. The Prevalence rates of iron deficiency assessed by Hb and Hct were found to be 10% and 2.5%, respectively. However, when assessed with TIBC, the prevalence rate of iron deficiency was increased to 32.5%. The mean values for serum triglyceride(TG), total cholesterol(TC), HDL-Chol, LDL-Chol concentrations and atherogenic index(AI) were 154.7mg/㎗, 80.0mg/㎗, 47.4mg/㎗, 91.3mg/㎗ and 2.6, respectively. Correlations among indices of anemia. there were positive correlations between Hb and Hct, between SI and TS : negative correlations between TIBC and TS or SI. Correlations among serum lipids, there were positive correlations between TC and TG or LDL-cholesterol. Energy intakes were correlated positively with TIBC(p＜0.05), and vitamin C intakes negatively correlated with Hb(P＜0.05). And vitamin A intakes were negatively correlated with TG(p＜0.01). TC(p＜0.05) and LDL-Chol(p＜0.01). Hb negatively correlated with TG(P＜0.05). Body weights(p＜0.05), lean body mass(p＜0.05) and total body water(p＜0.01) werenegatively correlated with Hb. BMI and WHR correlated with TG and TC(p＜0.01). These results indicated that subjects with higher energy intake and overweight had a tendency to have iron deficiency. Increases in BMI and WHR were related to increases in serum lipids levels and decreases in TIBC. The results also showed that serum lipids were decreased when vitamin A and iron intakes were sufficient.

• 생태와환경
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• 제42권4호
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• pp.422-431
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• 2009

This study was to provide basic data for aquatic ecosystem research using fishes. Field sampling was carried out at five selected sites of Gap Stream, and fish samples, especially for a selection of sentinel species were collected three times in June, September, and October 2007. We analyzed total length distribution of Zacco platypus in relation with the season and the sampling sites, and then compared with total body weight, condition factor (K), and age distribution of the fish. The fish population data were compared with physico-chemical water quality, obtained from the Ministry of Environment, Korea. Water quality analysis showed a significant nutrient enrichment, based on total nitrogen (TN) and total phosphorus (TP), and organic matter pollution, based on biological oxygen demand (BOD) and chemical oxygen demand (COD) in the Site 5, which is directly influenced by wastewater disposal plant (WDP). Population analysis of the sentinel species showed that the total number of individuals, age distribution, and the population size-structure were influenced by the effluents from the WDP, and that reproductive failure of young-age population were evident in Site 5. According to the relation analysis of total weight to K, the disturbed population was mainly attributed to combined effects of habitat modifications and chemical degradations. Regression analysis of K values against water quality parameters showed significant (p<0.05) positive relations with nutrient and organic matter contents. Our data suggest that the population structure using a sentinel fish species reflected the ambient water quality in the stream and that diagnosis of aquatic ecosystem health using Z. platypus population may be practical for water resource and ecosystem conservations.

• Journal of Nutrition and Health
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• 제56권4호
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• pp.377-390
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• 2023

본 연구는 한국인을 대상으로 제2형 당뇨병 환자와 질병이 없는 정상대조군을 비교하여 성별에 따른 체액 불균형 정도와 영양소 섭취량을 평가하고자 하였다. 조사대상자는 총 57명으로, T2DM이 있는 T2DM군 (n = 36)과 T2DM이 없는 정상대조군 (n = 21)으로 나누어 분석하고, 성별에 따른 체액량의 차이를 고려하여 남성 T2DM군 (n = 24), 남성 정상대조군 (n = 9), 여성 T2DM군 (n = 12), 여성 정상대조군 (n = 12)으로 세분화하여 지표들의 특징을 분석하였다. BIA를 통하여 연구대상자의 체액 조성을 분석한 결과, ECW/ICW는 T2DM군이 정상대조군보다 유의적으로 높았고, 부종지수를 나타내는 ECW/TBW는 T2DM군이 정상대조군보다 유의적으로 높게 나타났다. 성별에 따른 체액 조성을 분석한 결과, 남성과 여성 모두 T2DM군은 정상대조군보다 높은 ECW/ICW, ECW/TBW를 보이며 동일한 체수분율 양상이 나타났다. 식사일기를 통해 연구대상자의 영양소 섭취량을 분석한 결과, 1,000 kcal 당 탄수화물, 식이섬유, 비타민 A, 비타민 C, 나트륨, 칼륨 섭취량은 T2DM군이 정상대조군보다 많았고, 1,000 kcal 당 지방, 콜레스테롤 섭취량은 T2DM군이 정상대조군보다 적었다. 본 연구를 통해 T2DM 환자에게서 체액 불균형이 나타날 가능성이 높음을 알 수 있었으며 추후 당뇨 합병증의 평가, 진단의 기초 자료로 널리 활용될 것으로 사료된다.

• Journal of Nutrition and Health
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• 제55권4호
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• pp.419-429
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• 2022

수분은 인체에서 가장 많은 비율을 차지하는 성분으로 인체의 원활한 생리작용을 위해 필수적인 요소이다. 2013-2017 국민건강영양조사 자료를 근거로 하였을 때 우리나라 사람들의 평균 1일 수분 섭취량은 2,167.3 mL/day이며 그 중 62%가 섭취기준을 충족하지 못하고 있다. 반면 음료 섭취는 계속해서 증가하고 있는 추세다. 수분 섭취기준은 충분섭취량으로 제시되며, 상한섭취량과 만성질환위험감소섭취량은 제시하지 않고 있다. 2015년과 비교해 2020년 수분 충분섭취량은 연령에 따라 소폭 증가하거나 감소되었는데 유아기 1-2세, 남자 6-8세, 9-11세, 여아 6-8세는 100 mL/day씩 감소하였으며, 남자 12-14세는 100 mL/day 증가하였다. 수분 섭취기준으로 제시되는 수분 충분섭취량은 음식 수분 섭취량과 액체 수분 섭취량을 합한 값이며, 액체 수분 섭취량은 물 섭취량 중앙값, 음료 섭취량 중앙값, 우유 섭취량 200 mL/day을 합해서 산출한 수치이다. 이와 같이 수분 섭취기준에는 음식 수분 섭취량도 포함되어 있으므로, 물과 음료의 섭취기준으로 총수분 섭취기준을 적용하는 것은 적절하지 않으며 액체 섭취기준을 적용해야 한다. 그리고 액체 수분을 섭취할 때에는 당류, 카페인 등이 함유된 음료보다 물이나 우유를 섭취하는 것이 바람직하다. 한국인 수분 섭취기준 설정에 있어서 향후 개선하고 보완해야 할 사항으로 한국인 일상식에서 수분 함량비의 정확성 제고, 액체 수분 섭취량에 관한 조사방법 보완, 생애주기별 수분 섭취 실태에 대한 다각적인 검토, 노인기의 생리적 변화와 건강상태 반영, 한국인 대상 수분 섭취와 건강에 관한 연구 활성화와 반영 등을 제안한다.

• 센서학회지
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• 제26권3호
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• pp.160-167
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• 2017

Many stroke patients undergoing rehabilitation therapy require a quantitative indicator for the evaluation of body composition in paretic and non-paretic regions. In this study, the body fluid alteration in the paretic and non-paretic regions of stroke patients with hemiplegia caused by cerebral hemorrhage and cerebral infarction was analyzed using bioelectrical impedance analysis (BIA). Alterations in body fluids were investigated to assess the physical status of the paretic and non-paretic regions of 20 stroke patients with hemiplegia caused by cerebral hemorrhage (7 patients) and cerebral infarction (13 patients). Extracellular water (ECW), intracellular water (ICW), ICW/ECW, total body water (TBW), ECW/TBW, and TBW/fat-free mass were utilized to evaluate the functional status of the paretic and non-paretic regions. Compared with the non-paretic region, the paretic region had high ECW and low ICW. Due to the loss of motor function and nutritional imbalance caused by the stroke, the amount of fat increased while the muscle quantity and quality significantly decreased in the paretic region. Thus, BIA can be a useful tool for quantitatively assessing paretic and non-paretic regions in stroke patients with hemiplegia.