A voltammetric analysis of doxycycline was developed using DNA immobilized onto a carbon nanotube paste electrode (PE). An anodic peak current was indicated at 0.2 V (versus Ag/AgCl) in a 0.1M NH4H2PO4 electrolyte solution. The linear working range of the cyclic and square wave stripping voltammetry was obtained to 1-27 ngL-1 with an accumulation time of 800 s. Final analytical parameters were optimized to be as follows: amplitude, 0.35 V; frequency, 500 Hz; and pH, 5.43. Here detection limit was found to be 0.45 ngL-1, this result can be applied in foods systems and in the biological diagnostics

Development of elderly foods that improve health among the older population is needed. The purpose of this study was to investigate the preference of specific foods for development as elderly foods. A one-to-one survey method was used for data collection from 150 elderly people attending senior welfare centers. The results of the study showed that the preferred cooking materials were vegetables, meats and fishes; and preferred cooking method was soup and stew rather than deep-frying. The elderly preferred meats and seafood but they did not eat them frequently. The results of investigating the preference of specific foods including meats, Kimchi, nuts and rice cakes indicated that old people liked broiled meats, Chinese cabbage Kimchi, walnuts and nonglutinous rice cakes the most, and they did not feel comfortable with chewing the foods. Most respondents were not familiar with the elderly foods. Moreover, the most important factors affecting their choice of elderly foods were hygiene, nutrition and flavor

The objective of this study is to examine the effects of consumer beliefs regarding three food certifications on their behavioral intention and the behavioral intention biases to purchase (purchasing intention biases) certified agricultural products as predicted by a subjective probability model. The food certifications used for this study are ‘Organic food’, ‘Traceability system of food products,’ and ‘Hazard Analysis Critical Control Point (HACCP)’. Tofu (bean curd) was selected as being representative of agricultural food products, for the purposes of this study. In 2016, we surveyed 243 consumers regarding the strength of their belief regarding their prior beliefs relative to each certification, as well as the strength of their intention to purchase certified tofu based on their belief strengths for this study. The study resulted in the following findings: Firstly, consumers hold more than two different prior beliefs for each of the three certifications included in this study. Consumers’ prior beliefs regarding these certifications have an impact on their consideration as to whether they plan to buy those certified agricultural products. Secondly, consumers try to persuade themselves to ensure that their particular belief about the product’s certification could lead to a purchasing decision regarding that agricultural product

This study was conducted to assess the recognition and consumption of meal alone and processed food according to major of college students in Seoul Metropolitan area and Chungcheong province, Republic of Korea. To accomplish this, a survey was conducted to investigate 353 college students (171 food & nutrition majors and 182 non-majors) regarding their general characteristics, dietary behaviors, meal alone issues, and the purchase and consumption of processed food. Most major and non-major students skipped breakfast. The main reason for skipping was not having time. Majors and non-majors put great importance on their lunch and evening meal, respectively. Nutrition information routes for majors were ‘college class’ (62.5%) and ‘TV radio’ (17.5%). However, the routes for non-majors to obtain nutrition information were ‘internet smart phones’ (41.1%) and ‘TV radio’ (28.3%). These results suggest the need to provide correct information concerning nutrition to college students. Most major and non-major students tend to have 0 to 2 times of meal alone per week. The main reason for meal alone was schedule unsuitable for eating with family or friends. The most critical factors for majors and non-majors when they chose menu to have meal alone were personal taste and money, respectively. The primary consideration for choosing processed food was price and the main purchase route was convenience store. The main reason for consuming processed food was easy-to-cook. Of processed foods, the most favored ones were noodles and fish products. Meal alone frequency was positively correlated with age (p<0.05), grade (p<0.05) and monthly allowance (p<0.05). Preference and consumption frequency of processed food were negatively correlated with concern about nutrition (p<0.05) and meal frequency (p<0.05), respectively. Based on these results, greater efforts should be made to provide meaningful information regarding programs for nutrition education to improve their dietary habits. Research and development of processed food specifically for college students eating alone should be increased.

본 연구는 축산식품으로부터 식중독균 검출을 위한 시료 전처리법을 확립하기 위해 전처리용액, 균질화 시간, 시료와 전처리용액의 비율에 따른 회수율을 비교하였다. 이를 위하여 햄, 발효유, 소고기에 E. coli O157:H7, S. aureus, S. Typhimurium를 7.0 log CFU/g로 접종하고 PW, SS, BPD, BPW로 처리하였다. 또한 균질화 시간은 30, 60, 90, 120, 300초, 시료와 전처리용액 비율은 1:2, 1:4, 1:9, 1:19로 각각 처리하였다. 그 결과 발효유와 소고기에서는 BPW로 처리하였을 때 전반적으로 식중독균의 회수율이 높았으나(p < 0.05), 햄의 경우에는 전처리 용액에 따른 유의적 차이는 없다. 전처리용액의 최적 비율은 햄, 발효유, 소고기가 각각 1:9, 1:2, 1:4였으며(p < 0.05), 균질화 시간은 모든 시료에서 120초로 처리했을 때 유의적으로 가장 높은 회수율이 나타났다(p < 0.05). 따라서 선정된 최적 전처리 조건에서 식중독균 회수율을 수행한 결과 모든 시료및 균종에서 85%이상의 높은 회수율을 보였다. 이상의 결과를 종합해 볼 때 축산식품으로부터 식중독균 검출을 위한 전처리 용액 및 시료와 전처리용액의 비율은 시료의 종류에 따라 적절한 것으로 사용하는 것이 식중독균 검출의 정확성을 높일 수 있을 것으로 판단되어진다.

엥겔계수에 의하면 1980년 이전까지는 빈곤단계에 해당한다. 이 시기의 특징은 기본적인 배고픔을 충족하기 위한 양식소비가 증가하고 식물성 소비 중심의 단일성을 그 특징으로 한 다. 개혁·개방 이후 1980년대 초반부터 1995년까지가 대체로 원바오 단계에 해당한다. 이 단 계는 알류, 수산물, 조류(가금육), 소고기, 양고기의 소비량이 양적으로 늘어나는 특징을 갖고 있다. 반면 양식, 채소 등 식물성 식품의 소비량은 양적으로 감소하고 있다. 이 단계에 다원 화가 시작되는 추세가 나타난다. 샤오캉 단계에도 우유, 조류, 소고기, 양고기, 과일, 수산물, 알류의 소비량이 양적으로 늘어 나는 추세가 심화되고 있다. 양식, 채소 등 식물성 식품의 소비량이 양적으로 감소하는 추세 도 원바오 단계와 마찬가지로 샤오캉 단계에도 계속되고 있다. 다원화 추세가 양적으로 심화 되고 있는 것이다. 지출 금액 기준에서 보아도 이와 유사한 결과이다. 샤오캉 단계에서 지출 금액이 높은 항목은 우유·유제품, 수산물 등이다. 지출 금액 기준의 외식비 통계를 보면 샤오 캉 단계에 우유·유제품, 수산물에 이어 세 번째로 증가율이 높다. 반면 지출 금액 기준으로 증가율이 낮은 항목 가운데 하나는 양식이라는 점에서 양적 기준의 결과와 유사하다. 부유단계는 양적 기준에 의하면 조류, 우유, 수산물에 증가율이 높다. 조류, 수산물의 소비량 증가는 가공(냉동가공 포함)을 통해 상품화되기 용이한 식품이다. 하지만 부유단계에서도 양적으로 양식, 채소, 돼지고기의 소비량이 여전히 가장 높은 품목이다. 지출금액 기준으로 보아도 역시 유사한 연구결과이다. 우유·유제품과 육류·조류·가공제품의 증가율이 높다. 특히 부유단계에는 외식비의 비중을 가장 늘린다는 사실도 확인되었다. 증가율이 낮은 항목은 역 시 기본식품인 양식이다. 소득 수준별로 보아도 위와 유사한 결과를 보인다. 고소득층은 지출금액면에서 수산물과 우유·유제품의 소비량을 더욱 늘리고 양식의 소비량을 줄인다.

In this study, we explain the environmental variables that mainly influence the spatial and seasonal pattern of Galerucella nipponensis in 38 wetland and stream located at mid-low Nakdong River. G. nipponensis were found at total of 32 wetland, was strongly positively correlated with the biomass of Trapa japonica (t=2.173, r2=0.013, p<0.05). In result of seasonal distribution during 3 years, the largest density of G. nipponensis adult were observed in summer (7~8 months), egg and larva was recorded in only early spring (4~5 months). Rainfall were negatively related with the seasonal distribution of G. nipponensis. They were more abundant in dry season (2015 year) than rainy seasons (2013~2014 year). Stable isotope analysis showed that the G. nipponensis consumed as food source no submerged leaf of T. japonica than other plant. However, utilization of T. japonica on Galerucella nipponensis were not influence to plant biomass and/or species composition in vegetated bed. Those considered as adaptive strategies for sustainable habitat maintenance that because T. japonica use as not only food source but also their lives for G. nipponensis.

Stable Isotope Analysis (SIA) of carbon and nitrogen is useful tool for the understanding functional roles of target organisms in biological interactions in the food web. Recently, mixing model based on SIA is frequently used to determine which of the potential food sources predominantly assimilated by consumers, however, application of model is often limited and difficult for non-expert users of software. In the present study, we suggest easy manual of R software and package SIAR with example data regarding selective feeding of crustaceans dominated freshwater zooplankton community. We collected SIA data from the experimental mesocosms set up at the littoral area of eutrophic Chodae Reservoir, and analyzed the dominant crustacean species main food sources among small sized particulate organic matters (POM, <50 μm), large sized POM (>50 μm), and attached POM using mixing model. From the results obtained by SIAR model, Daphnia galeata and Ostracoda mainly consumed small sized POM while Simocephalus vetulus consumed both small and large sized POM simultaneously. Copepods collected from the reservoir showed no preferences on various food items, but in the mesocosm tanks, main food sources for the copepods was attached POM rather than planktonic preys including rotifers. The results have suggested that their roles as grazers in food web of eutrophicated reservoirs are different, and S. vetulus is more efficient grazer on wide range of food items such as large colony of phytoplankton and cyanobacteria during water bloom period.

푸드트럭 사업에 대한 우리나라 정부 및 지방자치단체의 기본 방침은 가능한 한 철저히 규제하여 그 영업을 최대한 제한하는 것이다. 하지만 푸드트럭 사업은 불법 상행위와 동일한 차원의 개념이 아니며, 오히려 지방경제와 주민복지의 차원에서 규제보다는 보완적인 대안을 찾고자 하는 노력이 필요하다. 하지만 이 러한 규제에도 불구하고 푸드트럭 사업을 선택하는 논리는 공식적인 경제영역에 대한 진입이 어려운 상황에서 비공식적 경제영역으로서의 푸드트럭 사업이 비교적 진입도 용이하고 이익도 초래할 수 있기 때문이다. 따라서 지방자치단체는 미국의 대도시 정부처럼 우선 푸드트럭 등록제와 실명제를 철저히 실시하여 푸드트럭 사업의 공식화를 도모하는 것이 필요하다. 또한 때로는 복지의 차원에서 빈곤층 주민의 푸드트럭 영업을 허용하는 방안도 필요하다. 정책 대안의 중요한 핵심은 푸드트럭 사업자와 정 부 및 지방자치단체의 경제적 이해관계를 일치시키는 것이다.

Local food is widely known as a ‘safe food’ and its consumption has been made from many local consumers. A study about factors that gives influence on consumer satisfaction in local food enterprise is insufficient. So researcher tries to figure out related factors using empirical method. In study, use perceived quality of the local food, reputation of local place, brand value, customer satisfaction and recommendation to set up causal models and examine the structural relationships for managerial implication. The result show us perceived quality and brand value has a positive effect on consumer satisfaction, reputation of local place doesn’t have a significant effect on consumer satisfaction. In last consumer satisfaction has positive effect on recommendation intension. Base on this result, researcher provide managerial implication and limitation if this study.

The interest in convenience food has increased over the years. Many researchers have tried to discover what factors affect the consumption of convenience food. Despite the diversity of studies, few studies emphasize a household’s income. The aim of this article is to identify the different consumption patterns between upper, middle, and lower income brackets. Generally, households with higher income consumed more convenience food or the relationship was not significant. However, many convenience foods are regarded as nutritionally unbalanced and have a lower quality. So, the hypothesis cannot be easily confirmed because there are tradeoffs not only between health, as nutrition balance and cost, but also health and convenience. Thus, there is a need to indicate the divergent attributes of buying convenience food in a distinct income group. In addition, the convenience food is subdivided into two distinct categories: convenience food as a substitution for a whole meal (unhealthy) and substitution as part of a diet (healthy). We found that higher income groups purchase healthier convenience food while lower income groups purchase unhealthier convenience food. Also there are distinct attributes that influence the consumption of healthy and unhealthy convenience food.

The purpose of this study was to investigate perception of the Food Allergy Labeling System (FALS) of school foodservice in female middle school students. The subjects were 148 female middle school students in the Incheon metropolitan area. In this cross-sectional study, data were collected using self-administered questionnaires. Only 20.9% of subjects had experience of food allergy education. There was no significant difference in food allergy knowledge by grade. The scores of perception of food allergy labeling by school foodservice were significantly higher in lower grade students (p<0.001). In all grades, highest scores were observed for ‘food allergy labeling is necessary’, whereas the lowest scores were for ‘I check the food allergy labeling’. The percentages of subjects who wanted to participate in food allergy education were significantly different (p<0.01); 73.8% in 1st grade, 50.0% in 2nd grade, and 35.7% in 3rd grade. For desired education contents to enhance perception of FALS, 57.5% of subjects answered ‘emergency management’ and 23.0% said ‘information of food allergy causing food’. Therefore, it is necessary to increase food allergy education and educate female middle school students according to grade in order to enhance perception of FALS.

We analyzed information provided by diet-related programs of comprehensive programming channels and the relationship between composition of professional panelists and quality of provided information. We selected 82 items among eight programs by MBN, JTBC, and TV chosun. All 82 items provided information about food & nutrition and health & disease, but only 32 items (39.0%) and 35 items (42.7%) provided information on food culture and food safety, respectively. Among the food ingredients, phytochemicals (81.7%) were the most frequently mentioned, and the contents of functional ingredients occupied a large part. The inappropriate information on programs were broadcast on an average of 1.2 episodes per program, and the most pointed out item was information that could confuse viewers with drugs (29.3%). Among the professional panelists, medical doctors (38.9%) and Oriental medicine doctors (16.6%) had the highest number of appearances, and professors of food & nutrition constituted only 7.1%. However, the increase in the number of appearances of professors showed a positive effect on the quality of program information. Contents focused on balanced nutrient intake and dietary culture of Korea should be increased rather than focusing on the function of each nutrient in comprehensive programming channels.

The present study was conducted on 200 food handlers employed at restaurants with open-kitchens in Seoul to evaluate their food sanitation knowledge levels and practices. A majority of participants (88%) replied that open-kitchens are more hygienic than common kitchens due to the sanitary cooking process. The correct answer rate was 94.3% for sanitation of instruments and utensils and environmental sanitation, whereas food handling sanitation (66.8%) was ranked at the bottom among food sanitation knowledge. Total scores of food sanitation knowledge were significantly influenced by education level and ages of food handlers (p<0.001). Personal hygiene knowledge level of food handlers regarding institutional food service was higher than that of food handlers at restaurants and bakeries (p<0.001). Food sanitation practices scores showed significant differences in personal hygiene (p<0.001) and environmental sanitation (p<0.05) according to certificate possession. As the result of correlation analysis between food sanitation knowledge and practices, there was no significantly positive correlation, whereas a significant positive correlation was observed between knowledge of food handling and personal hygiene practices (p<0.05). The results show need for improvement in both knowledge and practice levels of open-kitchen food handlers. Consistent and customized food sanitation education program should be developed to protect against food poisoning at open-kitchen restaurants.

This study investigated the characteristics of main house food cultures in Gyeonggi-do using a case study on the head family. The subject of this study was selected through an advisory committee of experts; it incorporated intangible and tangible elements of the main family based on relevant data. Selected representative main house of Gyeonggi-do had 12 parts in total. The entire investigation was conducted in five parts; literature search, telephone survey, in-depth interviews, inheritance food research of the head family, and cuisine demonstrations. Twelve families within the researched family clan had members of high merit or scholarly reputation qualified enough to serve bulcheonwi, a form of important religious worship. Food in Gyeonggi-do, specifically, can be served for Bongjesa jeopbingaek, which is a combination of performance of ancestral rites and greeting guests. Meat ingredients were frequently used. Articles of clothing were colorful and vivid, with wootgi that needed lots of work. Soup and steamed dishes tended to favor simple but fresh tastes that come with their cultural and historical context.