• Asian-Australasian Journal of Animal Sciences
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• 제9권2호
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• pp.159-164
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• 1996

Food intake of birds can be affected by particle size as well as diet composition, In order to investigate whether food intake of diets including excessive amount of phenyalanine(Phe) was influenced by diet types. a series of experiments were conducted in growing chicks and laying hens. Growing chicks significantly decreased food intake in a semipurified excessive Phe diet compared with a semipurified control diet, while laying hens fed a practical diet including excess Phe did not significantly reduce their food intake over a corn starch-substituted control diet. In an attempt to find out whether diet type affects food intake in layers, the semipurified type diet with excess Phe greatly reduced food ingestion, but the effect was delayed in the practical type diet. Moreover, under choice feeding regimes between the Phe and either starch, tyrosine(Tyr) or fiber diets in order to investigate whether the decreased food intake in the presence of an excess of dieary Phe in laying hens is involved in the palatability for the diet, there was no significant difference between Phe and starch diet while a preference for the Phe diet tended to be increased when birds were offered Tyr. Laying hens ingested significantly more the Phe diet than the fiber diet within 1 h after feeding. For supporting the idea that preference for the Phe diet may be affected by manipulating taste sense, an anaesthetic or saline was intramuscularly administered under the tongue just before a choice feeding. Preference for the Phe diet was not significantly different from that for the fiber reference diet within 1 h in the anaesthetized birds while the birds preferred the Phe diet in the saline treated group. It is suggested that because birds are able to select a diet, the decreased food intake induced by dietary excess Phe may be due to the repulsive effect of Phe after ingestion but not the taste of Phe.

• 한국식품저장유통학회지
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• 제10권2호
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• pp.169-174
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• 2003

본 연구는 서울지역 주부를 대상으로 쌀 생산과 소비측면에서 새로이 주목받고 있는 기능성 쌀 중 다이어트 쌀에 대한 소비자 지불가치와 구매유형별 소비자 선호분석 및 이에 따른 마케팅 전략을 수립하는데 연구의 목적이 있었다. 분석 결과 다이어트 쌀에 대한 소비자의 평균지불가격은 최소 1.17배에서 최대 1.52배까지 일반 쌀 보다 높게 지불하는 것으로 분석되었다. 또한 다이어트 쌀의 선호분석 결과소득이 높을수록 다이어트 쌀에 대한 구입의향이 높은 것으로 나타났다. 소비자 지불가격 및 선호분석을 토대로 기능성 다이어트 쌀에 대한 마케팅 전략은 고 판매 가격 전략, 명품전략 및 직거래 체제의 확립이 중요하다. 또한 디지털시대를 맞아 전자상거래 쇼핑몰에 의한 판매도 필수적인 마케팅 전략으로 수립되어야 함을 지적할 수 있다.

• 한국가정과교육학회지
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• 제25권2호
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• pp.65-78
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• 2013

본 연구는 중학교 2학년 기술 가정 교과 내 '식단과 식품 선택'과 '식사 준비와 예절' 단원의 교육내용을 표/그림/사진, 읽기 자료, 활동자료로 나누어 살펴보고, 내용분석을 통해 추출된 체험 중심 항목을 식생활 단원을 모두 이수한 중학교 3학년 학생들을 대상으로 실천정도를 알아보고자 하였다. '식단과 식품의 선택' 단원과 '식사준비와 예절' 단원은 대체로 활동자료를 통해 가정생활에서의 실천적이고 체험적인 측면이 강조되고 있었으며, 표/그림/사진과 읽기자료가 직접적으로 학생들의 체험을 제공하지는 않지만 다양한 활동과 문제 해결이 가능할 수 있도록 개념을 설명하고 있었다. 체험 중심 학습 내용 중 학생들의 실천도가 높은 항목은 '식사예절 지키기'(3.24), '식품 구매시 영양표시, 유통기한, 원산지 등을 반드시 확인하기'(3.18) 순이었으며, 실천도가 낮은 항목은 '음식 만들어보기'와 '균형 잡힌 식단 작성하기' 문항으로 나타났다. 이는 수업 시간 내 직접 체험할 수 있는 활동자료를 제시한 항목에서 학생들의 실천도가 높은 것과 관련이 있었다. 따라서 기술 가정교과 내 식생활 단원에 대한 학생들의 관심도를 높일 수 있도록 강의중심의 수업보다는 다양한 교육매체 및 교수학습방법을 개발하여 학생들의 적극적인 참여를 유도할 수 있는 수업이 진행되어야 할 것이다.

• Preventive Nutrition and Food Science
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• 제16권2호
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• pp.117-126
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• 2011

This study investigated potential causes of obesity by examining diet and lifestyle factors. The data from the 2008 Korea National Health and Nutrition Survey were statistically analyzed to determine the relative importance of causes of obesity. Because the factors affecting obesity for males and females were significantly different, binary choice logistic models of the male and female subjects were built and estimated separately. Our results show that stress, the irregularity of eating breakfast, and frequency of eating out had the three greatest impacts on male obesity, respectively, and stress, employment status, and age had the greatest impacts on female obesity, in that order.

• 한방비만학회지
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• 제5권1호
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• pp.121-131
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• 2005

During last few decades dietary guidelines for the weight management mainly have focused on a low-fat, high carbohydrate diet. Carbohydrate was supposed to be low-dense, highly satiating as well as it affects little on the lipogenesis. Although low-fat diet has significant weight-reducing effect, the loss was modest and usually regained after cessation of the diet. Furthermore, low-fat, modest-carbohydrate diet did not impact on the ever increasing rates of overweight and obesity. Alternative approaches include low-carbohydrate diet, high-carbohydrate diet and low-glycemic index diet. Although none of above mentioned diet have sufficient evidence for standard weight management diet, short-term efficacy and safety are being approved continuously. Low-carbohydrate diet contains less than 45% of carbohydrate in daily energy consumption, it is claimed to have more satiating effect and to improve metabolism. However, low compliance due to the limitation of food choice should be considered on prescribing the diet. High-carbohydrate which contains 90% of carbohydrate in total daily energy consumption, is effective in providing satiety and lowering total calorie intake and cholesterol. On the other hand, nutritional unbalance should be took into account. Low-glycemic index diet is based on the theory that contemporary diet contains significantly less fiber and unrefined carbohydrate, therefore insulin secretion is disturbed. Because low glycemic index food slowly increase blood glucose and insulin level, it induces much satiating effect and may decrease calorie ultimate intake. However, poor standardization of glycemic index is one of the main obstacle for the diet to be applied in the clinic. Meanwhile, high fructose food and beverage should be discouraged because it has little satiating effect and may cause insulin resistance. High fiber food is another recommendation for healthy, lean diet.

• 한국식생활문화학회지
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• 제37권2호
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• pp.99-108
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• 2022

This study identifies the perceptions and choice attributes toward plant-based foods and identifies the differences between vegetarians and omnivores. We conducted an online survey of 245 vegetarians and 246 omnivores. The results reveal a significant difference between vegetarians and omnivores. Compared to omnivores, vegetarians perceived that plant-based food products would be 'good taste', 'animal-friendly', and 'consistent with their personal value'. Omnivore scores were higher in the perception that it would be 'good for health' and 'environment-friendly'. No statistically significant difference was obtained between both diet groups when considering the factor of nutrition. When considering choice as an attribute for plant-based food products, vegetarians responded that 'ingredients' were the most important, while omnivores responded that 'taste' was the most important. These results can be used as basic data for developing and promoting plant-based food products in South Korea.

• 동아시아식생활학회지
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• 제25권1호
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• pp.1-11
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• 2015

This research was designed to examine the dietary habits and unbalanced diet of middle school students by gender and region. The survey was conducted using questionnaires on dietary habits and unbalanced diet administered to 726 students (urban: 367, rural: 359). The obesity index using BMI showed that the largest proportion of girls was 'underweight' in both regions, which showed a significant difference by region (p<0.001). Male students in urban areas prefer salty taste more than rural students (p<0.05). In urban areas, problems relating to dietary habits were 'unbalanced diet' and 'overeating' in male students and 'frequent snacks' and 'irregular mealtime' for female students (p<0.01). The frequencies of skipping breakfast (p<0.01), snack intake (p<0.001), eating out (p<0.001) and fast food consumption (p<0.001) were significantly higher in urban students than in rural students, and the reason for eating snacks was 'hungry' in urban students and 'habitually' and 'delicious' in rural students (p<0.01). Unbalanced diet was significantly higher in rural students compared with urban students (p<0.001) and male students compared with female students in urban (p<0.05), and the factors affecting dietary habits were mostly related to family. Male students in urban areas showed a significantly lower intake frequency of 'fish, tofu and beans' (p<0.05) and 'milk and yogurt' (p<0.05), but higher intake frequency of 'vegetables' (p<0.001) compared with female students. Male students in rural areas showed a significantly lower intake frequency of 'meat' (p<0.05) but higher intake frequency of 'milk and yogurt' (p<0.05) compared with female students. Urban students showed a significantly higher intake frequency of food groups compared with rural students. To conclude, desirable nutrition education on meal regularity, snack choice, and problems relating to unbalanced diet should be conducted in schools.

• 한국식품영양학회지
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• 제26권2호
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• pp.301-309
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• 2013

This study was designed to provide fundamental data on the consumption of fast food for a balanced diet of university students. The effects of personal characteristics and preferences such as gender, major, residing region, living expense, school grade, dieting, physical activity, smoking and alcohol consumption on fast food consumption patterns were analyzed by surveying university students. The analysis showed significant differences (p<0.05) in the consumption of different types of fast food depending on different personal characteristics and preferences as follows : hamburger by major, physical activity and alcohol consumption; chicken by school grade, physical activity and alcohol consumption; spaghetti by gender and smoking. Groups of different majors and school grades showed significant differences (p<0.05) in response to a question "Have you ever eaten fast food for regular meals?". The choice of fast food types based on taste and price appeared to be significantly influenced by majors and gender. Different groups with different majors and dieting experience appeared to think significantly differently about fast food. In response to a question "Has the consumption of fast food changed your diet style" different groups of different majors and physical activities showed significant differences. The analysis of factors affecting fast food choices revealed that fast food is chosen significantly differently depending on gender and majors (p<0.05). The purchase of fast food appeared to be significantly affected by gender, diet, physical activity, experience of fast food and consumption of fast food for regular meals (p<0.05).

• Asian-Australasian Journal of Animal Sciences
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• 제30권6호
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• pp.834-842
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• 2017

Objective: An experiment was to evaluate the interplay of dietary lipid sources and feeding regime in the transition from sow milk to solid food of abruptly weaned piglets. Methods: Soon after weaning, 144 piglets were selected and were trained over a 15 day period to experience gradually reducing dietary fat content from 12% to 6% for lard (L), soybean oil (S), and coconut oil (C) and their feeding behavior and diet preference then tested in a behavior observation experiment. Another 324 weaned piglets were used in three consecutive feeding experiments to measure the effect of different dietary fats on performance and feed choice in the four weeks after abrupt weaning. The lipid sources were used as supplements in a 3% crude fat corn/soya basal diet, with 6% of each being included to form diets 9C, 9S, and 9L respectively, and their effects on performance measured. Combinations of these diets were then further compared in fixed blends or free choice selection experiments. Results: Piglets pre-trained to experience reducing lipid inclusion showed different subsequent preferences according to lipid source, with a preference for lard at 9%, soybean oil at 3%, and coconut oil at 6% inclusion rate (p<0.001). Following abrupt weaning, whilst after 4 weeks those fed 9C had the heaviest body weights (18.13 kg, p = 0.006). Piglets fed a fixed 1:1 blend of 9C+9S had a poorer feed conversion ratio (FCR = 1.80) than those fed a blend of 9C+9L (FCR = 1.4). The 9C and 9L combination groups showed better performance in both fixed blend and free choice feeding regimes. Conclusion: After abrupt weaning, they still have dependence on high oleic acid lipids as found in sow milk. A feeding regime offering free choice combination of lipids might give the possibility for piglets to cope better with the transition at weaning, but further research is needed.

• 동아시아식생활학회지
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• 제26권4호
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• pp.285-296
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• 2016

This study was conducted to obtain a better understanding of American green tea consumers for increasing Korean green tea sales in the US market. In doing so, this study investigated green tea choice attributes of US consumers and segmented them based upon their perceptions about important attributes of green tea. A factor-cluster segmentation approach was used for this study. An exploratory factor analysis identified five green tea choice motives: 'Sensory', 'Diet', 'Price', 'Health', and 'Brand'. Based upon these five choice attributes, cluster analyses classified all respondents into four homogeneous subgroups: 'Highly motivated', 'Taste/Price oriented', 'Health oriented', and 'Brand oriented'. Cross-tab tests proved that green tea consumption and purchasing patterns were significantly different among the four clusters. In particular, two cluster groups representing 'Highly motivated' and 'Health oriented' groups were found to offer the most utility for further American green tea market segmentation research. Findings show that American green tea consumers include a wide range of age groups and they usually buy green tea at grocery markets. Managerial implications for all cluster groups based upon their unique characteristics are provided. Korean green tea companies can apply these findings in order to develop more effective and efficient marketing strategies to attract American consumers to buy more Korean green tea.