• Journal of the Korean Dietetic Association
• /
• v.5 no.1
• /
• pp.21-28
• /
• 1999

This study was conducted to investigate beverage consumptions in relation to food intakes of Korean young people. One hundred thirty five college students(61 males and 74 females) living in Taegu, Kyung-buk and Taejon answered to questionnaires and recorded three day food intakes between May 20 and June 5, 1997. The preferred beverages were fruit juice, carbonated drink, dairy drink, sport beverage for male students, and fruit juice, dairy drink, sport beverage and carbonated drink for female students. Beverage taken most frequently was coffee for both. Frequent consumption of orange juice was associated with consumption of vegetables, meats, and fats and oils used for frying, and light cola seemed to be consumed with greasy dishes. Beverage consumption contributed to intakes of calcium and vitamin $B_2$more than other nutrients. 4.6% of total energy intake, 15.5% of calcium intake, 11.4% of vitamin $B_2$ provided from beverages in female. Contributions of beverages to nutrient intakes were higher in female than in male students. Calcium intake was the lowest among nutrients for males, and intakes of iron and vitamin A were the lowest for females as compared to the recommended dietary allowances. Therefore it is necessary to guide college students to choose beverages for balanced intakes of necessary nutrients.

• Korean Journal of Food Science and Technology
• /
• v.29 no.2
• /
• pp.273-278
• /
• 1997

In order to investigate the punch properties of some vegetables-cucumber, radish, garlic, ginger and potato-force, distance, and time were measured with a texturometer, and the correlations between compositions and cell characteristics of samples were characterized. Many reflection and rupture points on the force-distance and distance-time curve were observed, and these points appeared when the cells of sample were resisted and yielded against the applied force. They were big and clear at the slow crosshead speed. The regression analysis for force-time and distance-time to the rupture point showed $R^{2}>0.95$. The rupture time and rupure force were 5.63 sec, 4.88 N in ginger and 4.15 sec, 2.00 N in cucumber. The rupture forces become large values at the fast crosshead speed. As cell sizes were increased, the moisture content and rupture distance were increased, while the viscosity of juice, density, regularity of cell, and slope of force-time were decreased. Rupture force, time and distance were decreased at the large specific gravity of samples. The slopes of distance-time curve were inversely proportional to slope of force-time curve.

• Journal of the Korean Home Economics Association
• /
• v.18 no.1
• /
• pp.35-40
• /
• 1980

This study was designed to find out the mineral content in Korean foods. The data will be used as a fundamental guide in planning sodium and potassium restricted diet in Korea. The study is part 6 sodium and potassium content in meat, eggs and fish. The previous study is s follows: part1 and part 5 on vegetables and fruit, part 2 on cereals, part 3, on milk and soft drinks and part 4 on orange juice and nectars. part 6 includes 10 beef cuts, 5 retail items of pork, 4 parts of chicken, 2 kinds of eggs and 15 individual kinds of fish were collected from the market and analyzed for the content of sodium and potassium by atomic absorption spectrophotometry. The following tables 1-5 show the result.

• Journal of the Korean Society of Food Science and Nutrition
• /
• v.23 no.1
• /
• pp.48-54
• /
• 1994

The survey on feeding practice in 202 infants in Kwangju area was undertaken from April to May, 1993. The incidence of breast feeding was 35.6% of the interviewed mothers while 35.1% of infants were formula fed. Baby's sex, birth order, birth weight and mother's educational level did not affect the infant's feeding method of the respondents , but family's monthly income affect it significantly(p<0.05). Initiating time f weaning in infants was 4.83 month. Fruits and fruit juice, infant's most favorite food were the first food introduced to infants. Cereal's were offered frequently as infant foods while animal protein source and vegetables were lesser used 52.8% of mothers purchased commercially prepared infant food , while 33.2% of them did not use it at all. Depending on mother's educational level, mother got information on weaning with the aid of different education materials. The respondents were most interested in the way how to prepare weaning food. It might be suggested that development of effective nutrition education technique specific to the different groups of mothers should be focused.

• Korean Journal of Food Science and Technology
• /
• v.34 no.2
• /
• pp.303-310
• /
• 2002

An optimization for fermentation processes to make lactic acid juice with extracts from apples, carrots, celery, watercress, jujube and lycii (3 : 3 : 1 : 1/2 : 1 : 1/2) using co-cultures of Leuconostoc mesenteroides, Lactococcus lactis and Lactobacillus cellobiosus isolated from Dongchimi had been investigated on the emphasis of composition of sugars and sodium chloride at various temperatures. The concentration of sugars less than 25% and salt less than 0.8% did not affect remarkably the cell growth of lactic acid bacteria and acid formation during fermentation. The fermenting juice showed increases in the population of lactic acid bacteria and acidity, and decreases in population of coliform bacteria and sugar concentration with high cultural temperature. At $25^{\circ}C$ viscous substance was not formed as it had at $15^{\circ}C$. The optimum composition, based on the sensory evaluation, was determined to be oligosaccharide and 0.2% for sodium chloride. It took 3 days to produce the most preferable juice of pH 3.62 at $25^{\circ}C$. At the optimal state the fermented juice showed viable cell counts (cfu/mL) of exponential numbers 8 for lactic acid bacteria and 4 for yeast. Coliform bacteria which had been $5.6{\times}10^2\;cfu/mL$ at the beginning of fermentation were not detected.

• Korean Journal of Community Nutrition
• /
• v.15 no.3
• /
• pp.329-341
• /
• 2010

The purpose of this study was to examine vegetable & fruit (V/F) intakes, beliefs and self-efficacy regarding V/F consumption, nutrition knowledge and eating behavior of elementary students. A survey was conducted to the 4th graders (n = 234) at two elementary schools in Guri, Kyunggi-do. About one-fourth of subjects were overweight or obese. Subjects had 4.2 servings of V/F a day, consuming 340.2 g of V/F. Girls consumed significantly more amounts of vegetables than boys (p < 0.05). Girls were more favorable regarding V/F consumption (p < 0.01), and believed more strongly on advantages of having V/F such as “good for skin” constipation prevention (p < 0.001) and cancer prevention (p < 0.05). Boys felt more strongly in disadvantages or barriers of eating V/F, including mother's cooking time constraints (p < 0.01), lack of past experience of eating V/F, and family members' disliking of V/F (p < 0.05). Girls felt more confident in eating V/F (p < 0.05) than boys; they also felt more confident in specific items of "eating fruits/salads instead of cookies/chips for snack" and "eating fruit juice/vegetable juice instead of soda"(p < 0.01). Subjects showed low level of nutrition knowledge, especially in items such as balanced meals, recommended servings of V/F and vitamin deficiency. Compared to boys, girls had more desirable eating behavior such as eating adequate amount of meals (p < 0.001), having a variety of foods, eating fruits daily, and having fatty foods less frequently (p < 0.05). Intakes of Ca and K were quite below the recommended level, while the intakes of protein, Na and vitamin A intake were much above the Dietary Reference Intakes (DRI) for 9-11 old children. Nutrient intakes expressed as %DRI was higher in girls for vitamin A (p < 0.01), energy and riboflavin (p < 0.05). High V/F consumption group (${\geq}5$ servings of V/F a day) compared to the counterparts showed higher self-efficacy and had better eating behaviors. Nutrition education for children should focus on increasing consumption of V/F, by helping them to increase self-efficacy for eating V/F and to recognize the benefits and reduce the barriers of eating V/F, especially in boys. It is also needed to provide nutrition information for balanced meals or increasing V/F consumption, and help the children to adopt desirable eating behavior.

• Journal of Nutrition and Health
• /
• v.37 no.7
• /
• pp.550-556
• /
• 2004

Dietary pattern analysis is important complementary approach for identifying associations between diet and chronic disease. A case-control study was conducted in order to examine dietary patterns and the risk of colon cancer in Korea. Data were collected from both 137 cases with either colorectal cancer or large bowl adenomatous polyps and 134 controls regarding social-demographic characteristics and food intake using a semi-quantitative food frequency questionnaire. We conducted factor analysis and identified 6 major dietary patterns: 'Well-being diet' characterized by higher intakes of potatoes, yogurt, soybean paste and vegetables, 'Meat & fish', 'Milk & juice', 'Pork & alcohol', 'Rice & kimchi', and 'Coffee & cake'. We calculated factor scores for each participant and examined the associations between dietary patterns and colon cancer risk. After adjusting for potential confounders, there was a relative risk for colon cancer of 0.16 (95% confidence interval, 0.07 - 0.34) when comparing the highest with the lowest tertile of the 'Well-being' pattern. Significant trends of decreasing risk of colon cancer also emerged with the 'Milk & juice' (OR = 0.40, 95% CI = 0.20 - 0.79). In contrast, inverse associations of the risk were found for 'Pork & alcohol' (OR = 1.92, 95% CI = 0.93 - 3.97), 'Coffee & cake' (OR = 2.18, 95% CI = 1.07 - 4.46). For the 'Meat & fish' pattern, the decreased risk of colon cancer was observed in the second tertile, but not in the highest tertile when comparing to the lowest. The 'Rice & kimchi' pattern had a nonsignificant association with the risk. These data suggest that major dietary patterns derived from the FFQ associated with the risk of colon cancer in Korea. Since foods are not consumed in isolation, dietary pattern research in natural eating behavior may be useful for understanding dietary causes of colon cancer.

• Journal of the Korean Society of Food Culture
• /
• v.26 no.5
• /
• pp.490-500
• /
• 2011

The purpose of this study was to investigate the snack and beverage intake patterns of students by body mass index groups (BMI <18.5, 18.5-23, 23-30, ${\geq}$30). Questionnaires were completed by 1381 high school students in Seoul, Incheon, and Gyeonggi-do, the area of Korea's capital region. There were no significant differences in skipping meals for overweight (BMI 23-30 and ${\geq}$30) or under-nourished (BMI <18.5) students. Girls skipped dinner more frequently than boys. Boys and girls both preferred meat and disliked fish regardless of BMI. Girls with BMI 23-30 disliked vegetables. Boys and girls would rather have crackers, candies, and chocolates than potatoes as snacks regardless of BMI. Obese boys (BMI ${\geq}$30) preferred flour-based food, fast food, and other food as snacks. Girls liked fruits more than boys. Snacks were eaten 2-3 times per week, when students were hungry or bored. There were no significant differences in the frequency or reasons (habitual, stressed) for snack consumption by BMI. Girls liked juice more than boys did, and boys preferred soda water more than girls did. Both the under-nourished (BMI <18.5) boy and girl groups had more juice than the overweight (BMI 23-30 and ${\geq}$30) groups. Obese (BMI ${\geq}$30) boys did not more drink soda water than other BMI groups. The under-nourished (BMI <18.5) boy group had more soda water than the normal (BMI 18.5-23) and overweight (BMI 23-30) groups. Girls in the overweight (BMI 23-30) group had 2 more cups of soda water a day than the normal group (BMI 18.5-23). Therefore, skipping meals and beverage intake patterns might influence BMI.

• Journal of Dairy Science and Biotechnology
• /
• v.31 no.1
• /
• pp.51-58
• /
• 2013

Emerging studies suggest that vegetables or fruit juices deemed to be potential alternative base medium for lactic acid bacteria fermentation. Until now, limited studies have been carried out to evaluate such applications. Thus, the objective of present study is that lactic acid bacteria were evaluated for their viability at low pH, growth during storage at low temperature, and $CO_2$ formation. Furthermore, the effects of grapefruit extract with respect to cell viability, sensory ability, and organic acid production were evaluated for these strains. The probiotic properties of the strains, including acid tolerance, bile tolerance, and adhesion to human intestinal epithelial cells (HT-29 cells), prebiotic characteristics, and safety features were examined. All strains survived in MRS medium broth adjusted to pH 3.8, at $10^{\circ}C$ for 6 days, and did not produce $CO_2$ to check post fermentation. The medium of grapefruit extract fermentation by Lactobacillus plantarum CJIH 203 resulted in maximal viable counts, compared with other strains, and the extract subsequently tasted sour due to the presence of lactic acid. Lactobacillus plantarum CJIH203 was highly resistant to artificial gastric juice and intestinal juice, while Lactococcus lactis SJ09 strongly adhered to HT-29 cells. Tagatose showed the greatest ability to enhance the growth of L. plantarum SJ21, relative to the other strains. All strains were verified by safety tests such as hemolysis, gelatin hydration, and urea degradation. Therefore, these strains could be promising candidates for use in reducing excessive post-fermentation and functional products.

• Food Science and Biotechnology
• /
• v.18 no.5
• /
• pp.1100-1108
• /
• 2009

Lactic acid bacteria (LAB) isolated from various fruits and vegetables were screened in order to determine appropriate fermentation starters for manufacturing functional fermented onion juice. From the initial screening test comprising more than 700 isolated LAB, 16 isolates were selected based on their acid production rate. Among the selected isolates, the fermentation broth of KC-007 exhibited the highest electron donating and nitrite scavenging activities, with values at pH 1.2 of 95.6 and 68.7%, respectively. From the overall results obtained in this study, we finally selected the bacterium KC-007 as a fermentation starter. This bacterium was identified and named as Pediococcus pentosaceus based on its morphological and physiological characteristics, carbon-utilization pattern (as assessed using an API 50CHL kit), and molecular genetic characteristics (as assessed using the nucleotide sequence of the 16S rRNA gene). The optimal temperature, pH, and starter inoculation concentration (v/v) required for growth of the isolated strain were $40^{\circ}C$, pH 4.0-6.0, and 2%(v/v), respectively.