• Journal of Nutrition and Health
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• 제40권2호
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• pp.111-117
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• 2007

시판 목초액 A (원액 35%)을 사용하여 음용수에 0%, 1.0%, 25.0%, 50.0%, 75.0%가 되도록 조제한 다음, CD계 수컷 흰쥐 (150 ${\pm}$ 10 g)에 2개월 동안 조제사료와 함께 자유 음용케 하여 간조직 중의 활성산소로서 수퍼옥시드 라디칼(O$_{2}\;^-$), 히디록시 라디칼, 과산화수소 및 제거효소로서 수퍼옥시드 디스무타아제 (SOD), 글루타치온 퍼옥시다아제 (GPx) 및 카탈라아제 (CAT)에 미치는 영향을 평가하였다. 목초액 PL-25 및 PL-50 투여군의 간조직의 미토콘드리아 획분에서는 O$_{2}\;^-$의 생성량은 대조군 대비 12${\sim}$14%의 O$_{2}\;^-$의 생성량 억제효과가 나타났고, 간조직의 마이크로솜획분에서는 대조군 대비 각각 11.0${\sim}$15.0의 O$_{2}\;^-$의 생성량 억제효과가 나타났다. 간조직 미토콘드리아획분에서 ${\cdot}$OH 생성량이 목초액 PL-25 및 PL-50 투여군에서 대조군 대비 12${\sim}$20%의 ${\cdot}$OH 생성 억제효과가 나타났고, 간조직의 마이크로솜획분에서는 대조군 대비 17${\sim}$20%의 ${\cdot}$OH 생성 억제효과가 나타났다. 목초액 PL-25 및 PL-50 투여군의 간조직의 미토콘드리아획분에서는 대조군 대비 12${\sim}$15%의 유의적인 H$_{2}$O$_{2}$의 생성 억제효과가 나타났고, 간조직의 마이크로솜획분에서는 대조군 대비 20${\sim}$22%의 상당히 유의적인 H$_{2}$O$_{2}$의 생성 억제효과가 나타났다. 목초액 PL-25 및 PL-50 투여군의 간조직의 Mn-SOD 활성은 대조군 대비 15${\sim}$25%나 유의적인 활성 증가효과가 인정되었고, 간조직의 Cu/Zn-SOD 활성은 대조군 대비 11${\sim}$16%의 유의적인 SOD활성 증가효과가 인정되었다. 목초액 PL-25 및 PL-50 투여군의 간조직의 미토콘드리아획분의 GPx 활성은 대조군 대비 10${\sim}$17%의 GPx 활성 증가효과가 인정되었고, 간조직의 마이크로솜획분의 GPx 활성 증가효과가 인정되었다. 목초액 PL-25 및 PL-50 투여군의 간조직의 미트콘드리아획분의 CAT 활성은 대조군 대비 12${\sim}$14%의 유의적인 CAT 활성 증가효과가 나타났고, 간조직의 시토졸 1획분에서는 대조군 대비 15${\sim}$27%의 CAT 활성 증가효과가 인정되었다. 이상의 결과에서 목초액의 장기간 투여는 간조직 중의 활성산소의 억제효과뿐만 아니라 방어시스템으로서 활성산소 제거효소의 역할도 충실히 수행하여 노화를 효과적으로 예방하고 억제할 수 있을 것으로 기대된다.

• 농업과학연구
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• 제39권1호
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• pp.61-68
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• 2012

This study was carried out to investigate the effects of dietary supplementation of quercetin ($Kocetin^{TM}$, QR) on antioxidative activity and meat quality of beef cattle (Holstein-Friesian). Beef cattle were divided into 3 groups; dietary supplementation of QR at 21 (n=4) and 42 ppm (n=3), and non-supplemented control (n=4). The QR comprised of 10% of quercetin. After slaughtering the beef cattle, loins were obtained and analyzed. Dietary supplementation of QR at 42 ppm showed significantly higher final pH of loin but did not affect the water holding capacity, drip loss, cooking loss, surface color, total phenolics content, 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity. Dietary QR showed no difference in both 2-thiobarbituric acid reactive substances and volatile basic nitrogen values. Textural characteristic results also showed no difference, except for cohesiveness. Cohesiveness was significantly higher in loin from beef cattle treated by dietary QR at 42 ppm when compared to control. Results suggest that dietary QR, which has only 10% of quercetin is not sufficient to have positive biochemical effects on beef meat quality.

• Nutrition Research and Practice
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• 제6권2호
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• pp.162-168
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• 2012

Vitamin D deficiency is a risk factor for metabolic syndromes. We examined whether vitamin D deficiency altered the prevalence of cardiovascular disease (CVD) in older Koreans. Cross-sectional analysis of data from the Korean National Health and Nutrition Examination Survey IV 2008-2009 was used to examine the association between serum 25-hydroxyvitamin D (25(OH)D) levels and the prevalence of CVD in a representative population-based sample of 5,559 men and women aged ${\geq}50$ years. CVD was defined as angina pectoris, myocardial infarction, or stroke. The prevalence of CVD (7.0%) in the older Korean population was lower than that in the older US population, although average serum 25(OH)D levels were much lower in the Korean population. Additionally, serum 25(OH)D levels did not differ significantly between the CVD and non-CVD groups. However, subjects in the lowest category (< 25 nmol/l) of serum 25(OH)D level had the greatest prevalence of CVD, about two-fold higher than subjects in the highest category (> 75 nmol/l), after adjusting for age, gender, body mass index, education level, residence location, and region. The prevalence of other risk factors for CVD, including higher waist circumference, fasting glucose, low-density lipoprotein (LDL) cholesterol, and triglyceride levels and lower high-density lipoprotein (HDL) cholesterol levels, was also higher among subjects in the lowest category than among those in the highest category. In conclusion, low serum 25(OH)D may be an independent risk factor for CVD in older Koreans.

• Nutrition Research and Practice
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• 제4권3호
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• pp.215-221
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• 2010

This study was performed to analyze the relationship among sebum hydration content of the skin and nutritional intake, serum antioxidant minerals and antioxidant enzymes, and lipid peroxide concentration in 50 female subjects in their 20s. The skin type was divided into Dry Skin, Mixed Skin, and Oily Skin, and the dry skin group was 14%, the mixed skin group was 56%, and the oily skin group was 30% of all subjects. The average age of the subjects was $20.54{\pm}1.43$ years and BMI was 20.66. The average sebum content in each group was in the order of T-zone>forehead>chin>cheek. In case of the T-zone, a significant difference between the dry skin group and the oily skin group was observed, suggesting that the area is most sensitive to sebum content by skin type. Significant differences were not observed in energy and nutrient intakes by skin type. Serum concentrations of antioxidant minerals such as copper, manganese, zinc and selenium were not significantly different among the groups, but the dry skin group tended to be higher than the oily skin group. Serum catalase was significantly higher in the oily skin group (P < 0.05), and MDA was significantly higher in the mixed skin group (P < 0.05). The hydration of the cheek and serum zinc showed a negative correlation, and the sebum content of the cheek and GPx showed a significant negative correlation. The hydration of the forehead and serum copper showed a significant negative correlation, and the hydration of the forehead and GPx showed a significant positive correlation. The hydration of the chin and serum SOD showed a significant positive correlation. With these results, it is considered that the basic condition of nutritional status can affect the skin health.

• 한국어류학회지
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• 제22권4호
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• pp.217-224
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• 2010

참홍어(Raja pulchra)는 서해지역에서 산업적으로 활용도가 높고 개체군 크기의 축소가 예상되므로 인공증식 기술 개발과 보존을 위해 일련의 연구를 수행하였다. 이 연구는 연중 대형 난각의 형태로 다회 산란하는 특성과 완전한 형태로 부화하는 치어의 특징을 기록하였다. 난소 내 난은 평균 179.8 (54~247)개로 직경이 5가지 무리로 구분되어 순차적인 산란에 기여하는 특성을 보였다. 난각은 다른 홍어류의 종과 구분되는 특징적 구조를 보였으며, 하나의 난각내에 포함되는 배의 수는 2~6개 범위이었다. 아울러 난각내에서 발생하는 자어와 부출 직전에 해당하는 치어의 형태적 특징 및 변화를 분석하여 기술하였다.

• 대한지역사회영양학회지
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• 제17권6호
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• pp.772-781
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• 2012

In order to supply the reference data to define the quality of life of the rural agricultural elderly population in the simplified steps, the data were collected by personal visits to 232 elder people over 65 (89 males and 143 females) in Sunchang area. The survey was conducted with written questionnaires concerning the quality of life, health-related habits, basic physical functions and cognitive behavior. The prevalence of the degenerative diseases were assessed by anthropometric and biochemical determinations. The averaged overall quality of life represented by EQ-5D index with Nam's model was calculated to be $0.865{\pm}0.1509$, and the percentages of people below the average were 38% (low QOL group) and 62% (high QOL group) were found to be the above the average. Generally, the subjects with male gender, higher educational background, higher self-rated health status, higher social activities were belonged to the high QOL group. The high QOL group had higher scores of daily living activities KADL and IADL, and lower risks in cognitive functions K-MMSE and depression scale GDS. There was no statistically significant correlation between biochemical indexes of blood and cognitive function and EQ-5D scores when the results were adjusted for age and gender. There were significant differences in nutritional assessment determined by the MNA between the high and low QOL groups. The low QOL group showed inferior nutritional status. The rapidly measurable factors of the quality of life of rural elderly were turned out to be physical activity scores and the simplified nutritional status measurement.

• Human Ecology Research
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• 제55권4호
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• pp.385-397
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• 2017

This study assessed the nutrient intake for Korean adolescents using the estimated usual intake. The usual intake of 1,763 adolescents aged 12-17 years old was estimated from one-day 24-hour recall data in the 2010-2012 Korean National Health and Nutrition Survey. The nutrient intakes of four groups according to sex (male and female) and age (12-14 and 15-17 years old) were then assessed in reference to the 2015 Dietary Reference Intakes for Koreans. For macronutrients, the proportions of subjects below and above the Acceptable Macronutrient Distribution Ranges (AMDR) were calculated. The Estimated Average Requirement (EAR) cut-point method was used to assess insufficient intakes of protein, vitamin C, thiamin, riboflavin, niacin, calcium, phosphorus, and iron; the full probability approach was used to assess the insufficient intake for iron among females. The proportions of subjects over the Tolerable Upper Intake Levels for vitamin C, niacin, calcium, phosphorus, and iron and the proportions over the Intake Goal for sodium were calculated to assess excessive intake. The proportions of subjects above AMDR for carbohydrates ranged from 22.5% to 38.0% by group. The proportions of subjects by group with insufficient intake for vitamin C, riboflavin, calcium, phosphorus, and iron ranged 29.1-39.7%, 22.5-34.3%, 73.1-89.3%, 14.3-43.6%, and 23.2-55.5%, respectively. The proportions of subjects by group with excessive intake for sodium ranged from 91.5% to 99.3%. The results of this study represent important basic information to establish nutritional standards for school lunches as well as to decide on relevant nutrition policies for adolescents.

• 대한영양사협회학술지
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• 제24권4호
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• pp.344-360
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• 2018

This study examined the sociodemographic factors, health-related habits, chronic diseases, dietary habits, and nutrient intake according to the self-rated health status in a group aged over 65 years by analyzing the nationally representative Korean survey data. A total of 1,510 subjects were analyzed among the participants of the 2016 Korean National Health and Examination Survey (KNHANES). Statistical analyses for complex samples were performed using the SPSS software package (version 19.0) The study subjects were divided into two groups (healthy group vs. unhealthy group) based on their self-rated health status. The percentage of the healthy group was 66.5%. Gender, age, education level, household income, job (P<0.001, respectively), marital status, and basic living allowance (P<0.05, respectively) were significant sociodemographic variables of the self-rated health status. Alcohol consumption (P<0.01), aerobic physical activity, stress, quality of life, not feeling very well, depression and activity restriction (P<0.001, respectively) were also significant health-related variables of the self-rated health status. Blood glucose, anemia (P<0.05, respectively), and chewing problems (P<0.001) were significant chronic disease-related variables of the self-rated health status. Adequate intakes of protein, dietary fiber, phosphorus, thiamin, niacin, vitamin C (P<0.001, respectively), calcium, sodium, potassium (P<0.01, respectively), iron, vitamin A, and riboflavin (P<0.05, respectively) were also significant variables of the self-rated health status. In complex samples multiple logistic regression analysis, the self-rated health status was influenced significantly by the aerobic physical activity (P<0.01), stress level (P<0.05), depression (P<0.001), quality of life (P<0.001), not feeling very well (P<0.001), activity restriction (P<0.001), chewing problem (P<0.05), and adequate intake of iron (P<0.05). These results suggest that activity restriction, mental health, adequate iron intake, and physical activity may be associated with the self-rated health status in the elderly.

• 한국동물생명공학회지
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• 제36권3호
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• pp.154-161
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• 2021

A number of Korean Chicken breeds were registered in Domestic Animal Diversity Information System (DAD-IS, http://dad.fao.org/) of the Food and Agriculture Organization (FAO). Evaluation of genetic diversity and relationship of local breeds is an important factor towards the identification of unique and valuable genetic resources. Therefore, this study aimed to analysis the genetic diversity and relationship of 22 Korean Chicken breeds using 12 microsatellite (MS) markers. The mean number of alleles for each variety was 5.52, ranging from a 3.75 (Leghorn F; NF) to a 7.0 (Ross). The most diverse breed was the Hanhyup3 (HCC), which had the highest expected heterozygosity (H_Exp) (0.754) and polymorphic information content (PIC) (0.711). The NF was the least diverse population, having the lowest H_Exp (0.467) and PIC (0.413). As a result of the principal coordinates analysis (PCoA) and factorial correspondence analysis (FCA) confirmed that Hy-line Brown (HL) and Lohmann Brown (LO) are very close to each other and that Leghorn and Rhode Island Red (RIR) are clearly distinguished from other groups. Thus, the reliability and power of identification using 12 types of MS markers were improved, and the genetic diversity and probability of individual discrimination were confirmed through statistical analysis. This study is expected to be used as basic data for the identification of Korean chicken breeds, and our results indicated that these multiplex PCR marker sets will have considerable applications in population genetic structure analysis.

• 대한영양사협회학술지
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• 제28권4호
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• pp.247-266
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• 2022

This study examines the sociodemographic and anthropometric data, health-related and dietary habits, and nutrient intakes according to depression levels in men and women aged over 65 years. A total of 2,938 subjects were analyzed from the 2016~2018 Korean National Health and Examination Survey. Statistical analyses for complex samples were applied using the SPSS software package. Based on the health questionnaire-9, the subjects were applied into two groups. The percentage of depression in women was significantly higher than in men (P<0.001). The factors associated with men's depression were marital status (P<0.05), household income (P<0.001), occupation (P<0.01), and body mass index (P<0.01). Women's depression was found to be significantly associated with household income (P<0.001), education level (P<0.01), basic living allowance (P<0.001), and body weight status (P<0.01). Perceived health status, stress level, quality of life, not feeling very well for the last two weeks, and activity restriction (P<0.001, respectively) were significant health-related habits associated with depression in both sexes. Diabetes (P<0.05) amongst men and hypertriglyceridemia (P<0.01) in women were significant factors associated with depression. Frequency of meals and eating meals together were significant dietary habits associated with depression by sex. Significant associations between improper nutrient intake and depression were also derived for both sexes; 7 nutrients were identified in men and 10 in women. Our results indicate that different factors are associated with depression in the elderly based on sex. Hence, sex-based health promotion programs are required to prevent the onset of depression among the elderly.