• Asian-Australasian Journal of Animal Sciences
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• v.27 no.2
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• pp.217-224
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• 2014

A total of 150 growing ducks were assigned to five dietary treatments to study the effect of sea tangle and charcoal (STC) supplementation on growth performance and meat characteristics in a completely randomized design. There were six replicates and five ducklings in each replication. The five dietary treatments were control, antibiotic, and 0.1%, 0.5%, and 1% STC supplemented diets. No significant differences were found on ADG, ADFI, and gain:feed among treatments in different weeks. The overall (0 to 3 weeks) ADFI decreased in antibiotic treatment (p<0.05) whereas the gain:feed increased significantly upon 1.0% STC supplementation compared to control (p<0.05). No significant variation was found in meat chemical composition except crude fat content which was high in 1.0% STC dietary group (p<0.05). Meat cholesterol was reduced in 0.1% STC group (p<0.05) compared to other dose levels while serum cholesterol was unaffected. High density lipoprotein (HDL) content was high in 1.0% STC (p<0.05) and low density lipoprotein (LDL) was low in 0.1% and 1.0% STC dietary groups (p = 0.06). No significant effect was found on the thiobarbituric acid reactive substances (TBARS) of fresh meat, whereas the TBARS value of meat preserved for 1 week was reduced significantly in STC dietary groups (p<0.05). The 0.1% STC dietary group showed an increased myristic acid (p = 0.07) content whereas, the content of eicosapentaenoic (EPA) and docosahexaenoic (DHA) acids increased in STC supplementation than antibiotic group (p<0.05). An increased concentration of omega-3 fatty acids and a reduced ratio of n-6/n-3 PUFA ratio was found upon 1.0% STC supplementation compared to antibiotic dietary group (p<0.05). Therefore, 1.0% STC dietary supplementation can be used as alternatives to antibiotics in duck production.

• Korean Journal of Community Nutrition
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• v.13 no.5
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• pp.663-673
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• 2008

The purpose of this study was to identify the factors associated with dietary attitudes and dietary self-efficacy of juvenile delinquents. Out of 110 questionnaires distributed to the juvenile detention home students in Daegu, and 150 questionnaires distributed to the juvenile detention home students in Anyang, 210 were analyzed (80.7% analysis rate). These data were analyzed by SPSS program. The results are summarized as follows. Almost all parents' educational levels showed 'graduation of middle school', and only 43.8% of the juvenile detention students were living with parents. In case of incoming status, average income per month was 2,000,000 won, which was lower than normal one. Diet attitude score was higher in boy students than girl students (p < 0.05). There was a higher score of diet attitude in higher educational levels of father. The average score of dietary self-efficacy was $2.51\;{\sim}\;0.86$. This value was lower than the normal juvenile. There was a higher diet attitude score in the higher dietary self-efficacy score (p < 0.001). Therefore, proper nutrition education is required to improve their dietary self-efficacy. The results of this study could be useful data to plan and develop nutritional education programs of juvenile delinquents.

• Journal of Nutrition and Health
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• v.25 no.7
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• pp.569-577
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• 1992

To study the effects of the age and the dietary protein content on Ca metabolism male rats of 1 month 6 month 12 month of age were fed experimental diets containing 5%, 15% or 50% casein for 4 weeks. Food and ca intake were higher in old rats and in high protein groups. The weight ash and Ca contents of femur and tibia were higher in old rats. The higher dietary protein level resulted in higher skeletal weigh ash and Ca contents. But high protein diet(50% casein) lead to reduced bone mineral density(ash/dry bone weight) and Ca density(Ca/dry bone weight) in 1 month old rats. Low protein diet(5% casein) on the other hand reduced the bone growth even though the bone density was higher in this group. The ill effect of low protein diet was not evident in 12 month old rats. Glomerular filteration rate(GFR) and urinary Ca excretionincreased with age and with dietary protein level especially in 12 month old rats. Serum immunoreactive parathyroid hormone(iPTH) level tended to be higher in aged rats but was not affected by dietary protein level except 1 month old rats where 50% protein group showed significantly higher value. This study showed that the dietary protein level seemed to have different effect on Ca metabo-lism in rats of different age., The low bone density in the high protein group of growing rats may be due to the higher iPTH level and increased urinary Ca. The dietary protein level however had no effects on the bone composition in aged rats even though the higher urinary Ca excretion. In conclusion this study suggests that high protein intake from young may lead to less peak bone mass and to increase the bone loss in later years, which would increase the risk for osteporosis.

• Asian-Australasian Journal of Animal Sciences
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• v.15 no.6
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• pp.821-827
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• 2002

The purpose of this study was to evaluate the effect of protected fat and heat-extruded soybean meal on the lactation performance of Holstein cows. Twenty-four cows, consisting of 20 lactating cows and 4 rumen-fistulated dry cows, were randomly allocated into four groups with 5 lactating cows and 1 fistulated cow in each group. A replicated 4${\times}$4 Latin square design with four 21 day periods, including 14 days of adaptation and 7 collection days within each period was employed. The experiment was a 2${\times}$2 arrangement, with or without heat-extruded soybean meal and protected fat inclusion. The dietary treatments consisted of supplements of (a) soybean meal (the control), (b) heat-extruded soybean meal, (c) protected fat, and (d) heat-extruded soybean meal and protected fat. The results showed that there were no significant differences in feed intake, milk yield, milk protein content, milk lactose content and body weight change between the dietary treatments. However, cows supplemented with protected fat showed a significantly increased (p<0.05) milk fat yield, 3.5% FCM and total solid yield. The increase in undegradable intake protein (UIP) via heat extruded soybean meal supplement significantly decreased the urea nitrogen concentration in the blood (p<0.05). Dietary fat inclusion significantly increased the blood cholesterol concentration (p<0.01) and decreased the ruminal pH value (p<0.01). Increased dietary UIP significantly decreased the ammonia nitrogen concentration in the rumen (p<0.01), but did not significantly influence the pH and VFA molar percentage in the rumen. It appears that dietary protected fat inclusion could improve milk fat and solid content. Increased dietary undegradable intake protein through heat extruded soybean meal did not improve milk yield. But it could alleviate the adverse effect of decreased milk protein due to dietary fat supplementation. Increased UIP could also decrease the ammonia nitrogen concentration in the rumen and plasma urea nitrogen concentration in the blood.

• Journal of the Korean Society of Food Culture
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• v.28 no.1
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• pp.48-56
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• 2013

The purpose of this study was to examine the dietary habits of boarding high school students in Gangwon based on gender and stress levels. Questionnaires were distributed to 571 boarding high school students and collected from 491 students from June 28 to July 20, 2011. The statistical data analyses were completed using SPSS (ver. 19.0) for the descriptive analysis, independent sample t-test and $X^2$-test. The mean stress score was 23.7 out of 40, and male's stress was significantly higher than female's (p<0.05). The rates of having daily breakfast and dinner were significantly influenced by gender (p<0.01), and the regularity of lunch was significantly different depending on the stress level (p<0.05). Female students consumed less flour based foods (p<0.01), carbonated drinks (p<0.01), juices (p<0.05) and functional drinks (p<0.01) than male students, but male students consumed less cookies and breads (p<0.01). Dietary habits that boarding high school students should improve were an unbalanced diet (38%), too much intake at once (17%) and prejudice against foods (11%), and their primary value in dietary life was preference (33%), followed by staving off hunger (18%) and pleasure (18%). The average level of interest in dietary life was 2.46 (on a Likert-type 3-point scale) and it was significantly higher for female students (2.53) than male (2.40) (p<0.05). About 54% of students washed their hands before a meal when they thought of it, but only 25% of students always scrubbed up. The regularity of breakfast and dinner, frequency of snack intake, dietary habits that need to improve, intrest in dietary life, and washing hands before meals showed significant difference by gender but not by stress levels.

• Journal of the East Asian Society of Dietary Life
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• v.27 no.1
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• pp.29-40
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• 2017

The purpose of this study was to provide basic information for developing nutrition education programs for preschool children and their families. The subjects were 291 parents whose children went to daycare centers in Uiwang. The questionnaire contained 15 items for children's dietary habits and six items for parents' nutritional attitudes. The results of frequency analysis of children's dietary habits were as follows: 63.9% of children ate meals regularly, however breakfast (46.4%) was usually skipped; 44.0% of children ate a snack more than twice per day; 56.7% did not have late night meals; 49.5% ate out once to twice per week; 89.7% had dinner with family more than three times per week; and 43.6% had picky eating habits. The percentage of children who did not eat vegetables and seaweed was the highest among other food groups. Intake frequencies were low in fatty foods, instant foods, and fast foods. Some correlations were observed between picky eating habits and other dietary habits by cross-tabulation analysis. Intake frequency of non-picky eating children was lower for late night eating and fatty foods but higher for vegetables and seaweed compared to picky eating children. Parents answered that their nutritional knowledge level was normal (72.2%), and nutritional information was collected using the Internet (36.0%). Nutritional value was the most considered point in meal preparation of parents (43.3%), and the most difficult factor in child's diet management was lack of time due to working (36.1%). Parents cited method of creating a menu (27.0%) and table manners (25.3%) as topics of nutrition education by professionals. Therefore, various nutrition education programs need to be developed to improve healthy dietary habits for children and their families.

• Journal of the East Asian Society of Dietary Life
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• v.11 no.6
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• pp.485-497
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• 2001

For a period of 5 days, the quality of breads with Paecilomyces japonica powder were investigated using chemical, sensory, and mechanical evaluations at $25^{\circ}C$. The result of analysis of chemical properties revealed that the pH value of dough was increased as the amount of Paecilomyces japonica powder increased, but volume of dough and baking loss rate were decreased. Breads with 1% and 2% Paecilomyces japonica powder showed a good overall preference in sensory evaluation. As storing time passed. moisture content, lightness, and redness were decreased in all breads, but yellowness increased. Hardness and gumminess of texture analysis were increased as storing time passed, but springiness decreased. Springiness of the mechanical properties was negatively correlated with pH value of dough and volume of bread, while was positively correlated with volume of dough and baking loss rate. In the analysis of correlation between sensory and mechanical properties showed that hardness of mechanical properties had negative correlation with softness, moistness, and springiness. Cohesiveness of mechanical properties had positive correlation with acceptability.

• Journal of the East Asian Society of Dietary Life
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• v.11 no.3
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• pp.204-208
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• 2001

This study was conducted to investigate physicochemical properties and anti-allergic properties of walnut oil. pH, acid value and iodine value of walnut oil were respectively 4.9, 0.8 and 117. Most of general composition of walnut oil was crude fat(99.9%) Vitamin A and E were 0.06 and 10.25mg/100g and the major fatty acids of walnut oil was linoleic acid(62.8%). Total phenolics and antiallergic effects of walnut oil were estimated 27mg% and 62.82% at the concentration of 0.5% ethanol walnut oil. These results suggest that the walnut oil can provide one of the valuable resource for the functional foods.

• Journal of the East Asian Society of Dietary Life
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• v.12 no.1
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• pp.55-64
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• 2002

This study was carried out to investigate quality characteristics of Seolgiddeok containing 0, 1, 3, 5 and 7% of Lentinus edodes powder during storage. The water content of Seolgiddeok changed little with the length of storage and the amount of Lentinus edodes powder added. Hunter′s color L value of Seolgiddeok decreased and "a"and "b"value were increased significantly by increasing the amount of Lentinus edodes powder. The hardness, gumminess, adhesiveness, chewiness and cohesiveness of Seolgiddeok decreased, but springiness increased by increasing the amount of Lentinus edodes powder. Seolgiddeok added with 3% Lentinus erodes earned the highest scores in color, taste, softness, chewiness, moistness and overall preference. From the above results of sensory and texture analyses, an addition of 3% Lentinus edodes to Seolgiddeok showed the best result in quality.

• Journal of the East Asian Society of Dietary Life
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• v.10 no.5
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• pp.403-410
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• 2000

In order to investigate the possibility of lwo fat meat products, beef patties were prepared with gums such as carrageenan, methyl cellulose, and xanthangum. The quality characteristics of beef patties were examined. Moisture contents of raw and cooked patties of control were lower than those of patties containing gums, and fat content was higher than those of containing gums. There was no significant difference in the protein contents of patties. In case of L-value(lightness) of raw patty, the control was higher than those patties containing gums. a-(redness) and b-value(yellowness) among patties were not significantly different. Cooking yield, fat retention, and water holding capacity of beef patties containing gums were higher than control beef patty, but salt soluble protein and gel strength were not significantly different. Significant difference did not exist among beef patties in hardness, but the chewiness and gumminess of patties containing gums were higher than control. In case of sensory evaluation, there was no significant difference among patties in aroma and palatability. Texture of control was higher than patties containing gums, and juiciness of control was higher than patties containing carrageenan.