• Journal of Nutrition and Health
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• 제39권5호
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• pp.494-504
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• 2006

This study compared eating habits, food preferences, and the nutrient intakes of university students and their parents. The subjects were 186 students (68 males and 118 females) and 143 parents (62 fathers and 81 mothers) in 2 middle-sized cities and 3 metropolises. Eating habits and food preferences were investigated by questionnaire, and nutrient intake by a self recoding for 24-hour. The university students ate out, and ate breads, fast foods, instant foods, and canned or frozen products more frequently than their parents. They had higher preferences for meats, but lower preferences for fish, beans and bean products, vegetables, and sea weeds than their parents. Students took in more energy, total fat, total cholesterol, and SFA (saturated fatty acids) than their parents. The energy ratio of carbohydrate to the total energy intake was lower in the students than in their parents, while the energy ratio of fat to the total energy intake was higher in the students than in their parents. The intake of fats by the students amounted to more than 25% of the total energy intake. In conclusion, the university students had developed a more Western eating pattern and food preference, and were exposed to more risk factors to health than their parents, They should therefore, learn how to manage their meals more carefully in order to reduce risk factors to health.

• 한국축산식품학회지
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• 제34권4호
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• pp.423-433
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• 2014

In this study, the nutritional and storage quality of meatballs formulated with different levels (0, 1.5, 3.0, 4.5 and 6.0%) of bee pollen were investigated during storage at $41^{\circ}C$ for 9 d. Protein content of meatballs increased, while moisture content decreased with increased pollen. The addition of pollen improved cooking loss but decreased the redness (Hunter a value) and sensory scores. Textural parameters (hardness, springsness, gumminess, and chewiness) were affected by pollen addition and the hardness and gumminess values of meatballs decreased as the pollen content increased. While C18:0 content of meatballs slightly decreased with pollen addition, C18:2n-6c, C18:3n-3, C20:5n-3, and PUFA contents increased. The PUFA/saturated fatty acids (P/S) ratio increased from 0.05 in the control to 0.09 in meatballs with 6.0% pollen. The n-6/n-3 ratio decreased from 11.84 in the control to 3.65 in the meatballs with 6.0% pollen. The addition of pollen retarded the lipid oxidation and inhibited the bacterial growth in meatballs. The pH, redness, TBA value and total aerobic mesophilic bacteria, coliform bacteria and S. aureus counts values changed significantly during storage. The results suggest that bee pollen could be added to enhance the nutritional and storage quality of meatballs with minimal changes in composition and/or sensory properties.

• Asian-Australasian Journal of Animal Sciences
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• 제6권2호
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• pp.281-290
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• 1993

This experiment was designed to evaluate the effect of degree of unsaturation (Experiment 1) and the chain length of constituent fatty acids of dietary fats (Experiment 2) on-3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase activities in the liver and small intestine of chicks. Chicks were fed experimental diets for 10 days and then killed for the determination of the HMG-CoA reductase activities in the intestinal epithelial cell and hepatic microsomes. The hepatic HMG-CoA reductase activity showed the highest value in chicks fed the tallow-containing diet. Chicks fed diets containing safflower or coconut oil resulted in a significantly lower intestinal HMG-CoA reductase activity in comparison with those fed the olive oil-containing diet. The hepatic HMG-CoA reductase activity was significantly higher when fat-free and trilaurin were fed than when any other triglycerides were fed. This activity showed the lowest value in the chicks fed the diet containing tristearin. The HMG-CoA reductase activities in the jejunum and ileum were significantly or tended to be higher when trilaurin was fed than when any other triglycerides were fed. Except when trilaurin was fed, the presence of saturated fat in the diet did not have a significant effect on the intestinal HMG-CoA reductase activity, unlike the effect shown when a highly unsaturated fat was added to the diet. There was no significant correlation between the HMG-CoA reductase activities of the liver and intestinal, and the HMG-CoA reductase activity and cholesterol content of the intestinal epithelial cells.

• Asian-Australasian Journal of Animal Sciences
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• 제14권8호
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• pp.1110-1117
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• 2001

Responses of the rumen fungus, Neocallimastix frontalis RE1, to long chain fatty acid (LCFA) were evaluated by measuring gas production, filter paper (FP) cellulose digestion and polysaccharidase enzyme activities. LCFA (stearic acid, $C_{18:0}$; oleic acid, $C_{18:1}$; linoleic acid, $C_{18:2}$ and linolenic acid, $C_{18:3}$) were emulsitied by ultrasonication under anaerobic condition, and added to the medium. When N frontalis RE1 was grown in culture with stearic, oleic and linoleic acid, the cumulative gas production, gas pool size, FP cellulose digestion and enzymes activities significantly (p<0.05) increased at some incubation times(especially, exponential phases of fungal growth, 48~120 h of incubation) relative to that for control cultures. However, the addition of linolenic acid strongly inhibited all of the investigated parameters up to 120 h incubation, but not after 168 and 216 h of incubation. These results indicated that stearic, oleic and linoleic acids tended to have great stimulatory effects on fungal cellulolysis, whereas linolenic acid caused a significant (p<0.05) inhibitory effects on the cellulolysis by the rumen fungus. These results are the first report of the effect of LCFAs on the ruminal fungi. Further research is needed to identify the mode of action of LCFAs on fungal strains and to verify whether or not ruminal fungi have ability to hydrate unsaturated LCFAs to saturated FAs. There was high correlation between cumulative in vitro gas production and fungal growth (94.78%), FP cellulose degradation (96.34%), CMCase activity(90.86%) or xylanase activity (87.67%). Thus measuring of cumulative gas production could be a useful tool for evaluating fungal growth and/or enzyme production by ruminal fungi.

• 한국식품영양학회지
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• 제33권3호
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• pp.237-250
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• 2020

In this study, the Korea National Health and Nutrition Examination Survey in 2016 examined the nutrient and food intake of women in their 20s and 30s according to the number of meals a day, and the results were as follows: The study included 256 women in their 20s and 474 women in their 30s. Women in their 20s and 30s ate two meals a day, indicating that the notion of three meals a day was gradually changing to two to three meals a day. Those in their 20s and 30s who eat one, two or three meals a day were consuming less than the estimated energy requirement of the DRI for Koreans 2015. The vitamin A and C were eating less than the recommended intake in all meals. In the case of minerals, calcium was taken less than the recommended intake in all meals, but sodium was taken above the goal intake in all groups. Women in their 20s and 30s must reduce their intake of saturated fatty acids and sodium, and increase their intake of vitamins A, C, calcium, and potassium. Women in their 20s and 30s drank a lot of coffee, ate baechu-kimchi and rice frequently per week.

• 대한지역사회영양학회지
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• 제3권5호
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• pp.739-747
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• 1998

The purpose of this study was to compare the dietary habit and nutrient intakes of Korean farmers according to their different family patterns and farming types. Food and nutrient intakes were obtained by food frequency method. The subjects(male 35%, female 65% : mean age, $48{\pm}11 years)$ were compared 46% of nuclear family, 59% of 3-4 person of family size ; 50% of middle-scale farming ; 54% of rice farming. Sixteen percent were over 60 years old group. In aspects of dietary habit, farmers of medium size farming and 10-20 years of farming experience frequently skipped meals. But their appetite was better than small farm famers. Dinner irregularity was more frequent in their group of 3-4 person families. The numbers of food intake were significantly different according to family pattern. Nuclear family groups consumed more kinds of foods. The mean energy intake was 2000Kcal/day, with PFC ratio of 19 : 16 : 65. The energy and nutrient intakes showed the same tendency as the food variety. Intakes of calcium and iron were lower than the Korean RDA. Families with over 5 people consumed higher amounts of protein and minerals. Intakes of thiamin, niacin, and vitamin E were better in large families and large-scale farming groups. As compared with the PMS ratio, the level of monounsaturated fatty acids as higher than saturated FA. The lipid intake was also better in large families and large-scale farming. The results suggest that dietary habit and nutrient intakes were different by family pattern and farming types.

• 한국식품영양학회지
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• 제29권2호
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• pp.290-299
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• 2016

This study was conducted to determine the association between dietary calcium intake and biomarkers related to lipid and glucose metabolism and inflammation in Korean patients with type 2 diabetes. Seventy-five subjects (41 males, 34 females) were recruited from a group of patients who had visited the department of endocrine medicine. Data on anthropometric characteristics, clinical indices such as hemoglobin A1c and C-reactive protein (CRP), and dietary nutrient intakes were collected. Subjects were divided into three groups on the basis of their calcium intake [< EAR (below estimated average requirement), EAR-RNI (between EAR and recommended nutrient intake), > RNI (above RNI)]. Average calcium intake of < EAR, EAR-RNI, > RNI groups were $462.7{\pm}18.7$, $649.7{\pm}12.8$, and $895.7{\pm}21.7mg$, respectively. Energy intake was not different among groups but intakes of protein, total and saturated fatty acids were significantly higher in > RNI group than < EAR group. Analysis of covariance revealed that HDL cholesterol level was significantly higher in EAR-RNI group, as compared to < EAR group after adjustment with confounders such as age, sex, BMI and energy intake (p < 0.05). Levels of CRP and homeostasis model assessment 2-insulin resistance (HOMA2-IR) were significantly lower in EAR-RNI group. Total cholesterol level was higher in EAR-RNI and > RNI groups, although within the normal range. Our results suggest that dietary calcium intake may influence the levels of HDL-cholesterol, CRP and HOMA2-IR and subsequently, help management/treatment of type 2 diabetes patients.

• 한국식품영양과학회지
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• 제30권6호
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• pp.1266-1271
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• 2001

대두식품들로부터 추출한 지질분획들이 사람의 K562 백혈구암세포, mouse의 Yak1 백혈구암세포 및 S180 고형암세포에 미치는 세포독성 효과를 MTT assay법으로 조사하였다. 대두, 비지 및 된장의 총지질을 chloroform/methanol(2 : 1) 및 물포화 butanol로 추출하고 20배 용량의 acetone을 가하여 아세톤상층액(AS 획분) 및 아세톤침전물(AP 획분)을 얻었다 된장지질의 AS 획분 및 AP 획분이 실험에 사용한 K562, Yac1 및 S180암세포에 가장 강한 세포독성을 일으켰으며 비지 의 AS 및 AP 획분 역시 된장보다는 약하지만 세포독성을 나타냈으나 대두의 지질획분들은 세포독성효과를 나타내지 않았다. 된장지질의 AS 및 AP분획의 지질조성을 보면 대두 및 비지에 비하여 많은 양의 유리지방산이 함유되어 있었다. 또한 지질획 분들을 0.4 N KOH/methanol로 약알카리 분해하고 silica gel TLC로 분석한 결과, 된장의 지질획분에서는 대두 및 비지에서 보이지 않았던 알카리에 안정하고 ninhydrin에 양성인 물질들이 여러개 나타났으며 이들은 유리 sphingoid base 및 psycusin으로 추정되었다.

• 한국식품과학회지
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• 제24권2호
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• pp.132-136
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• 1992

밀가루의 지방질 조성에 대한 염소처리의 영향을 연구하기 위하여 밀가루 100파운드당 1, 2 및 4 oz의 액화염소가스를 각각 처리하여 각종 지방질 성분의 변화를 비교하였다. 염소처리에 의해 극히 적은 양이지만 유리 지방질 함량은 증가한 반면 결합지방질은 감소하였다. 중성 지방질함량은 염소처리량 증가에 따라 유리 및 결합지방질에서 모두 증가하였다. 당지방질 함량은 염소처리량 증가에 따라 유리지방질에서는 증가한 반면 결합지방질에서는 감소하는 경향이었다. Triglyceride의 함량은 염소처리량 증가에 따라 유리 및 결합지방질에서 모두 감소하였다. Digalactosyl diglyceride의 함량은 염소처리량 증가에 따라 결합지방질에서는 감소하였으며, 유리지방질에서는 4 oz 처리는 급격히 감소하였다. 유리 및 결합지방질 중 phosphatidylcholine 함량은 염소처리량 증가에 따라 감소한 반면 lysophosphatidylcholine은 증가하였다. 염소처리량 증가에 따라 유리 및 결합지방질에서 포화지방산 함량은 증가하였고 불포화지방산의 함량은 감소하는 경향이었다.

• Nutritional Sciences
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• 제9권1호
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• pp.14-19
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• 2006

Breast cancer may be the consequence of free radical damage, which is partially caused by the excessive intake of dietary fat and imbalances in antioxidant scavenger system;. In this experiment, we examined! the effects of dietary peroxidizability index (PI) values on hepatic thiobmbituric acid reaction substances (TBARS) and antioxidant enzyme activities in rats treated with 7,12-dimethylbenz[$\alpha$]anthracene (DMBA). Female Sprague-Dawley rats were used and 7,12-DMBA (20 mg/kg body weight) was gastrically intubated at seven weeks of age in order to induce mammary tumors (MT). The levels of dietary PI were 36, 81, 126 and 217 (LPI, MLPI, MHPI and HPI), while dietary polyunsaturated/saturated fatty acids ratio was maintained at the same level (1.0). Fat used in the experiment was mixed with soybean oil, com oil, palm oil, perilla oil, sesame oil, fish oil, and beef tallow. Experimental diets were given for the following 20 weeks. We measured tumor numbers and weights, and then assayed the hepatic TBARS levels and antioxidant enzyme activities such as superoxide dismutase (SOD), catalase, glutathione peroxidase, glutathione-S-transferase (GST) and glutathione reductase (GR). The incidence of Mr was the lowest in the MHPI group. The hepatic TBARS level was significantly raised with increasing dietary PI value. The hepatic SOD and GR activities were differed significantly by dietary PI value. The hepatic SOD activity was negatively correlated with dietary PI value and GR activity was the highest in the rats fed the MHPI diet. When the dietary P/S ratio is kept at 1.0, adequate dietary PI value (PI value of 126) may reduce the incidence and growth of Mr, but this benefit may be lost with higher dietary PI value. These results suggest that the awareness of dietary PI values may help to decrease breast cancer incidence and growth.