• Korean Journal of Community Nutrition
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• v.13 no.6
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• pp.903-911
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• 2008

The purpose of this study is to provide basic data for preventing preterm delivery in the aspects of blood pressure and hematic parameters. The blood pressure, hematic parameters, relationship between hematic parameters and nutritional intakes and pregnancy outcomes were compared between a preterm delivery group and a normal term delivery group. The results obtained are summarized as follows. Diastolic blood pressure was statistically higher in the preterm delivery group. White blood cells (p < 0.005) and alanine amino transferase (p < 0.05) of 3rd trimester in pregnancy were statistically higher in the preterm delivery group. Alkaline phosphatase (p < 0.0001) and lactate dehydrogenase (p < 0.05) were statistically lower in the preterm delivery group. Inverse relationships between niacin, vitamin B6 and zinc intakes and bilirubin (p < 0.05) were shown. Vitamin A intakes (p < 0.05) were significantly negatively correlated with blood protein, but zinc intakes (p < 0.05) were significantly positively correlated with blood protein. Vitamin B6 intakes (p < 0.05) were significantly negatively correlated with blood albumin. Calcium intakes (p < 0.005) and iron intakes (p < 0.05) were significantly positively correlated with blood lactate dehydrogenase. Also, vitamin A intakes (p < 0.05) were significantly positively correlated with blood glucose. Normal spontaneous vaginal delivery (p < 0.005) was statistically lower in the preterm delivery group. Birth weight (p < 0.0001) and birth length (p < 0.005) of the neonates were all statistically lower in the preterm delivery group.

• Journal of the Korea Convergence Society
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• v.11 no.4
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• pp.247-254
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• 2020

The socio-cultural and economic changes following the Fourth Revolution are driving the growth of the food tech industry. Korea's food tech industry is still focused on delivery apps and the smart farms, robot market including artificial intelligence are in its infancy. In the United States, alternative meat companies are already included in unicorn companies, while Korea, the fourth largest importer of beef, lacks alternative meat development. France, Europe's largest agricultural country, is focusing on Agtech. China has developed the Internet and online e-commerce market with the world's number one population. Korea also needs to change regulations that focus on the past industry and various food tech industries should be developed through political and business-driven research and investment.

• Journal of Applied Biological Chemistry
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• v.49 no.2
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• pp.39-47
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• 2006

Incorporation of bioactive compounds such as vitamins, probiotics, bioactive peptides, and antioxidants into Nutrient Delivery System (NDS) for 'nanofood' provides simple way to develop novel functional foods that may have physiological benefits or reduce risks of diseases. As vital nutrient in nanofood, proteins possess unique functional properties including ability to form gels and emulsions, which allow them to be ideal nanofood materials for encapsulation of bioactive compounds. Based on protein physico-chemical properties, this review describes potential role of nanofood materials for development of NDS in hydrogel form, micro-or nano-particles. Applications of these nanofood materials to protect delivery-sensitive nutraceutical compounds are illustrated, and impacts of particle size on release properties are emphasized.

• 축산식품과학과 산업
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• v.7 no.2
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• pp.10-17
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• 2018

• Journal of the East Asian Society of Dietary Life
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• v.25 no.1
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• pp.193-201
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• 2015

The aims of this study were to investigate (1) the status of food materials purchased by group-buying companies and (2) the satisfaction with food materials and service quality of group-buying companies in foodservice at child-care centers. In November 2013, child-care centers which were participated in a group-buying program in Gwanak-gu, Seoul were requested to complete self-reported questionnaires. One hundred and eight respondents (76.9% of directors, 23.1% of non-directors) completed questionnaires, including purchase frequency of food materials, degree of satisfaction with 'food materials' and 'operating system and service' of group-buying companies. About 60% of child-care centers purchased food materials from major companies. Respondents' overall satisfaction with 'food materials' and 'operating system and service' were '3.55' and '3.72' out of 5 points, respectively. For overall satisfaction with food materials, there were significant differences between 'public (3.79)' and 'private, home-based (3.31)' child-care centers (p=0.023). The results of multi-regression analysis showed that quality (${\beta}$=0.271, p=0.013) and price appropriateness (${\beta}$=0.284, p=0.002) were associated with overall satisfaction with food materials purchased by group-buying companies. The factors such as delivery accuracy about items(${\beta}$=-0.201, p=0.042), hygiene of delivery process (${\beta}$=-0.207, p=0.025) and communication with companies (${\beta}$=-0.317, p=0.003) were significantly associated with overall satisfaction with operating system and service provided by group-buying companies. The results of this study could be utilized for group-buying companies and the government to develop guidelines and policies on food material buying in foodservice at child-care centers.

• Journal of Food Hygiene and Safety
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• v.38 no.2
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• pp.37-45
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• 2023

The surge in food delivery systems during the coronavirus 2019 pandemic necessitated this study of heavy metal migration from food contact materials (FCMs). A total of 104 samples of FCMs, comprising 51 polypropylene (PP), 21 polyethylene (PE), and 32 polystyrene (PS) samples of six different types of FCMs (containers, covers, table utensils, cups, pouches, and wrappers) used for food delivery distributed in Korea, were collected and investigated for migration of three heavy metals (Pb, Cd, and As) using inductively coupled plasma-mass spectrometry (ICP-MS) to determine whether they complied with Korea's Standards and Specifications for Utensils, Containers, and Packages. Acetic acid (4%, v/v) was used as the food simulant, and tests were performed at 100℃ (in harsh conditions) for 30 min. Linearity of Pb, Cd, and As showed acceptable results with a coefficient of determination (R²) value of 0.9999. Limit of detection (LOD) and limit of quantification (LOQ) of Pb, Cd, and As were 0.001, 0.001, and 0.001 ㎍/L and 0.002, 0.003, and 0.003 ㎍/L, respectively. Accuracy and precision results complied with the criteria presented in the European Commission Joint Research Centre guidelines. The average concentration of Pb, Cd, and As migration detected in a total of 104 samples was 0.009-0.260 ㎍/L, which was very low compared with the migration specification set in the Standards and Specifications for Utensils, Containers, and Packages. The maximum level of Pb corresponded to 0.23% of the migration limit. There were no samples exceeding the limit. Thus, this study confirmed that the heavy metal contents of FCMs used for delivery food distributed in Korea were safely managed. The data from this study represent an invaluable source for science-based safety management of hazardous heavy metals migrating from FCMs used in the food delivery industry.

• Korean Journal of Community Nutrition
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• v.12 no.6
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• pp.752-760
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• 2007

Inadequate nutritional status of pregnancy can cause underweight and premature birth, undergrowth and deliverance of physically and mentally defected babyies. The purpose of this study is to provide guidelines for preventing preterm delivery in the aspect of nutritional factors. The nutrient intakes were compared between a preterm delivery group and a normal term delivery group to recognize risk factors of preterm delivery. The results obtained are summarized as follows. The pregnancy period was statistically longer in the normal term group (p<0.0001). Weight increase was statistically higher in the normal term group (p<0.0001). Calories (p<0.05), carbohydrates (p<0.0005), dietary fibers (p<0.0001), potassium (p<0.0005), vitamin $B_1$ (p<0.0005), vitamin $B_6$ (p<0.05), vitamin C (p<0.0001), and folic acid (p<0.05) intakes were statistically higher in the normal term group. Nutrient density of vitamin $B_1$ (p<0.05) and vitamin C (p<0.0001) in the normal term group was statistically higher. Nutrient adequacy ratio of zinc (p<0.05), vitamin $B_1$ (p<0.05) and folic acid (p<0.05) were statistically higher in the normal term group. Index of Nutritional Quality of vitamin $B_1$ (p<0.05) and vitamin C (p<0.0001) were statistically higher in the normal term group. In this study, the normal term delivery showed higher intakes of calories, carbohydrates, dietary fiber, crude fiber, potassium, vitamin $B_1$, vitamin $B_6$ vitamin C and folic acid than the preterm delivery group. Deficiencies in various nutrients may lead to preterm delivery, therefore, balanced nutrient intake is recommended to prevent preterm delivery.

• Journal of Nutrition and Health
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• v.31 no.2
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• pp.179-191
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• 1998

The satisfaction of elementary school children and their parents with the school lunch program by foodservice system was assessed by questionnaire. 787 (347 male, 417 female) 5th grade elementary school children and 761 parents participated. Foodservice systems of the schools were of 4 types : central/commissary ; satellite /commissary ; conventional/contracted ; and delivery/contracted. The most joyful mealtime for children was identified as lunch because of eating with friends. Satiety and leftovers after lunch varied according to the foodservice system. For example , there was less satiety in the contracted system and more leftovers in the delivery system than in the others, Foods tasted better in the commissary system than in the contracted one. The contacted system , especially the delivery/contracted system, was poor for keeping rice and soup hot. The children's food habits such as eating a greater variety of foods and good table manner were improved through the school munch program. Most parents well understood the main purpose of the school lunch program to be a source of education on nutrition and table manner, as well as a way in which to provide the same meals to all students and save the time & work needed to prepare home lunches. Parents claimed that hygiene, taste, good nutrition and food amount should be improved. This was especially true for hygiene in the commissary system and taste in the contracted system. Furthermore, they stressed that better taste and hygiene are the most important criteria for good school foodservice systems. In conclusion, parents wanted the school lunch program should be selected with consideration of children's preference such as by periodical food preference tests. A nutrition education program should also be provided to correct bad food habits of childrens.

• Journal of the Korean Society of Food Culture
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• v.16 no.5
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• pp.407-415
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• 2001

The purposes of this study were to assess th importance and performance of food suppliers and to explore the ways to improve the school foodservice purchasing management. The questionnaire regarding purchasing was composed of two parts. The part one consisted of questions on general characteristics of dieticians and school foodservice operations, and the part two was composed of questions on the importance & performance of food suppliers. Completed questionnaires were received from 286 dieticians of elementary school foodservice operations in Seoul. Statistical data analysis was completed using the SPSS/win for descriptive and t-test. In dieticians' demographic data, 36.6% were over 30 years old, 32.4% were $28{\sim}29$ years of age and 31.0% were below 27years old. Most of the respondents(68.3%) had overall working experiences less than 58 months and almost half of them(56.3%) were married. The school foodservice operations which employed a chef were 50.3%. The food suppliers' attributes that were recognized by the dieticians with high value of mean importance scores were: food quality, maintenance of food quality, accuracy in filling orders, quality of delivery facilities, on time delivery and packaging. Average mean score for importance was 4.33('important') out of 5 and mean score for performance was 3.50('so-so') out of 5. By IPA techniques, the attributes that deserve higher attention were those that ranked high in importance and low in performance(Quadrant A). The coordinates in Quadrant A were geographical location of supplier, maintenance of food quality, provision of information on cost variation and salesman's knowledge.

• Journal of the Korean Dietetic Association
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• v.9 no.4
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• pp.288-296
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• 2003

The purposes of this study were to assess the school foodservice purchasing practices and to explore the ways to improve the school foodservice purchasing management. The purchasing questionnaire was composed of three parts, the part one consisted of questions on characteristics of dietitians and school foodservice operations, and the others consisted of questions concerning purchasing practices and importance & performance of food suppliers. 286 dietitians of elementary school foodservice operations in Seoul were participated with the survey. Statistical data analysis was completed using the SPSS/win for descriptive and t-test. The school foodservice operations which employed a chef were 50.3%. Only one third of the dietitians(34.1%) reported having been involved in the selection of food suppliers. In dietitians' demographic data, 36.6% were over 30 years old, 32.4% were 28-29 years of age and 31.0% were below 27 years old. Most of the respondents(68.3%) had overall working experiences less than 58 months and almost half of them(56.3%) were married. The food suppliers' attributes with high scores of mean importance were food quality, maintenance of food quality, accuracy in filling orders, quality of delivery facilities, on time delivery and packaging. Average mean scores for importance and performance were 4.33('important') and 3.50('so-so') out of 5. In the comparison of importance attributes, produce suppliers had a significant higher score on suppliers(P<0.05) than processing food suppliers. Processing food suppliers received significant higher performance scores on product(P<0.05) and service(P<0.05) compared to produce suppliers.