• Journal of Biosystems Engineering
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• 제18권3호
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• pp.252-261
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• 1993

Nuclear magnetic resonance(NMR) was used to study a feasibility test for the possibility to develop a moisture sensor applicable for agricultural products such as raw and powdered grain. Samples of wheat flour and brown rice were tested with a 200MHz hydrogen NMR. The samples were loaded into 5mm NMR glass tubes and $30^{\circ}$ pulses were supplied to get resonance signals. Hydrogen spectrum intensities of the samples were compared to moisture content measured by a drying oven method. High linear correlations were obtained between the hydrogen spectrum intensity and moisture content. Therefore, moisure contents of agricultural products could be measured nondestructively utilizing the NMR principle. A low-cost design concept of the moisture sensor with the NMR principle was proposed for a practical use.

• 농업과학연구
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• 제29권2호
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• pp.98-108
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• 2002

Pooling system of jointly shipping farm products aims to realize economies of scale for it's farm products and strengthen bargaining power for the farmers. As adapting to pooling system, price received by farmers and competitive power of our farm products can be enhanced. Pooling system especially in Cheon-an pear and horticultural primary cooperatives is found to be required, because the pooling system is not introduced yet although the area is main region for domestic pear production. This study aims at establishing the appropriate pooling system and it's strengthening strategies in this cooperatives through survey of local producers' group in this cooperatives and case studies of successful pear primary cooperatives.

• 한국유기농업학회지
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• 제14권2호
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• pp.117-137
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• 2006

Environment-friendly(EF) agricultural policy developed to support high-quality farm products, such as organic farm products, doing so for the sake of strengthening the competitive power of Korean agriculture after the agreement of UR. The details of the policy are as follows : enforcing certification of organic farm products, establishing of the Law of Fostering the EF agriculture, carrying out the order of direct-payment, setting up the Five Year Plan for EF agriculture, etc. This study focuses on the background of social economy, the standpoint of EF farming in agricultural policy, and the analysis of the characteristics in EF agriculture. Three aspects in the background of the policy are as follows : the social movement, the social economy, and the social system. The standpoint and characteristics of the policy are studied by the analysis of the target and means of the policy which is based on the policy documents.

• 한국식품영양학회지
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• 제24권1호
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• pp.101-110
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• 2011

The principal objective of this study was to evaluate the consumption behavior and perceptions of environment-friendly agricultural products(EAPs) by university students in the Chonbuk area, Korea. Self-administered questionnaires were collected from 309 university students(male 33.0%, female 67.0%). Descriptive and comparative statistical analyses was completed using SPSS v. 12.0. The percentage of subjects who purchased EAPs was 70.9%. Of those, 87.2% had EAPs purchased by their mothers. The most purchased EAPs were vegetables, the primary reason for which was the perception of 'good for health'(73.1%). The main information source about EAPs was 'familes/freinds'. The average scores of 'attitude toward EAPs', 'knowledge toward EAPs', 'concern toward EAPs' were $3.76{\pm}0.57$, $2.91{\pm}0.61$ and $3.29{\pm}0.43$, respectively. With regards to 'attitude toward EAPs', the scores were significantly affected by 'self-reported health status'(p<0.05). With regard to 'knowledge toward EAPs' and 'concern toward EAPs', the scores were significantly affected by 'supplements for health' (p<0.05; p<0.001). For university students' right choices of EAPs, information and consumer education wthin the university curriculum on these products are necessary.

• 한국지역사회생활과학회지
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• 제15권3호
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• pp.71-84
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• 2004

Recently the globalization of agriculture by the WTO has brought crisis to Korean farmers. Value added agricultural products is the one of the strategies to sustain fanning. The idea for the project traditional fermented soy paste production and distribution was developed by the Gyeonggi-do Agricultural Research Institute. It was necessary to know the purchase condition and consumer needs for production distribution of the soy products. This study aims to investigate the consumers' need analysis of direct-deal soy products and the conditions of a purchase. A questionnaire was administered to 590 subjects living in Gyeonggi-do, Korea. The 107 subjects procured soy paste to buy with the reason of ignorance of preparation (39.2%) and the difficulty of storage and care (31.8%). When selecting the product 95.3%, previous experience (41.1 %) and comparison of each product (34.6%) were major answers, wanted direct-deal purchase from producers if implemented. 142 subjects(24%) experienced direct deal with producers. The main direct route was government and public offices( 42.4 %). The reason for direct purchase was confidence of agricultural products(77.5%). Delivery of 4kg of soy paste and 1.8 L of soy sauce in a glass container (43.0%) was favored twice a year. The kind of soy products for consumers' needs was Doenjang(57.8%) and Gochujang(18.3%). The preferred methods direct-dealing of soy products was direct order(59.9%) after validation, delivery gate to gate (44.2%) and by the internet(4.9%). The results of the study shows that the types of production would have the kinds and quantities diversity with confidence, sanitation, and safety. To regain successful, traditional tastes it is necessary to develop reliable and tasteful products for consumers and develop promotional material.

• Journal of Biosystems Engineering
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• 제25권2호
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• pp.107-114
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• 2000

Low temperature storage method is to increase the value of agricultural products by reducing quality loss and regulate consignment time by controlling respiration rates of agricultural products. Respiration rate of agricultural products depends on several factors such as temperature, moisture, gas composition and a microbe inside the storage room. Temperature is the most important factor among these, which affects respiration rate and causes low or high temperature damage. Fuzzy logic was used to control the temperature of a storage room ,which uses information of uncertain facts and mathematical model for room temperature control . Room temperature was controlled better by using fuzzy logic control method rather than on-off control method. Refrigerant flow rates and temperature deviations were measured for on-off system using TEV(temperature expansion valve) and for fuzzy system using EEV(Electrical Expansion Valve) . Temperature of the Storage room was lowered faster by using fuzzy system than on -off system. Temperature deviation was -0.6~+0.9$^{\circ}C$ for on-off system and $\pm$0.2$^{\circ}C$ for fuzzy system developed. Temperature deviation and variation of temperature deviation were used as inout parameters for fuzzy system. The most suitable input and output value were found by experiment. Cooling rate of the storage room decreased while temperature deviation increased for the sampling time of 20 sec.

• 한국축산식품학회지
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• 제32권2호
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• pp.247-251
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• 2012

This study was carried out to investigate the applicability of the detection of central nervous system tissues (CNST) in beef by-products in retail market. Beef by-products including large intestine, brain, spinal cord, liver, lung, spleen and heart were purchased and tested for the presence of CNST using an ELISA method. The ELISA test was evaluated and showed a high correlation coefficient by a standard curve (R value = 0.999). Based on the analytical instruction, the positive indication of the CNST contamination of brain and spinal cord was detected above 0.1% but large intestine, liver, lung, spleen, and heart was negative. Result suggests that the ELISA method is applicable to a real meat system and may provide a method to ensure confidence for consumer against bovine spongiform encephalopathy (BSE).

• 농촌지도와개발
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• 제19권3호
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• pp.699-727
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• 2012

Conditions of farm crop switching are affected by several important external factors such as agricultural products import opening, policy support, and climate change. Farming environment is always changing; barriers to imports are becoming lower and lower because of FTA and others, and climate change affects a boundary line of cultivation. Those situations give farmers motivation to change crops in order to cope with them. In addition, crop switching has been done in response to the local government measures about purchase of local agricultural products according to the local food and the expansion of organic agricultural products in school meal. Even though the favorable environment toward crop switching has been created, there are not many researches or outcomes regarding crop switching. Only few studies focus on the list of decision-making in crop switching, and locally suitable crop selection is not treated. In order to utilize crop switching as a farm management strategy, the proper frame should be studied and practical researches on application possibility also need. Therefore, study on crop switching is in a timely, proactive manner because farms catch the chance of expansion of school meal by changing crops. This paper applies HERO model used for venture foundation process to crop switching process. Success factors of HERO model are comprised of Habitate, Entrepreneurship, Resource, and Opportunity, and these phased application factors are applied to crop switching process. By doing so, each phase success factor of crop switching can be uncovered. Three farm organizations supplying organic agricultural products to schools are studied in Gyeonggi province. As a result, the stabilization stage cannot be achieved because of the habitate conditions and social conditions with low risk bearing of crop switching and current school meal systems are the main problems to block the diversification of risks. In order to succeed in crop switching, constructing the habitate in local districts or in systems of school meal is more effective than supporting each farm.

• Asian-Australasian Journal of Animal Sciences
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• 제30권10호
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• pp.1456-1463
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• 2017

Objective: To investigate the effect of host genetics on gut microbial diversity, we performed a structural survey of the fecal microbiota of four purebred boar pig lines: Duroc, Landrace, Hampshire, and Yorkshire. Methods: The V3-V4 regions of the 16S rRNA genes were amplified and sequenced. Results: A total of 783 operational taxonomic units were shared by all breeds, whereas others were breed-specific. Firmicutes and Bacteroidetes dominated the majority of the fecal microbiota; Clostridia, Bacilli, and Bacteroidia were the major classes. Nine predominant genera were observed in all breeds and eight of them can produce short-chain fatty acids. Some bacteria can secrete cellulase to aid fiber digestion by the host. Butyric, isobutyric, valeric, and isovaleric acid levels were highest in Landrace pigs, whereas acetic and propionic acid were highest in the Hampshire breed. Heatmap was used to revealed breed-specific bacteria. Principal coordinate analysis of fecal bacteria revealed that the Landrace and Yorkshire breeds had high similarity and were clearly separated from the Duroc and Hampshire breeds. Conclusion: Overall, this study is the first time to compare the fecal microbiomes of four breeds of boar pig by high-throughput sequencing and to use Spearman's rank correlation to analyze competition and cooperation among the core bacteria.

• 농약과학회지
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• 제10권1호
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• pp.15-21
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• 2006

재배지 포장에서 채취한 풋고추와 홍고추, 열풍건조한 건고추 및 유통중인 고춧가루 중 농약 잔류량을 조사하고 그 안전성을 평가하기 위하여 충북지역의 10 농가에서 채취한 풋고추와 9 농가에서 채취한 홍고추, 청주시내 6개소의 대형유통마켓에서 채취한 8점의 고춧가루를 GLC-NPD/ECD와 HPLC로 분석하였다. 또한 건조에 따른 홍고추 중 농약잔류량 변화를 구명하기 위하여 농가에서 채취한 홍고추를 건조한 후 마쇄하여 농약잔류량을 분석하였다. 풋고추에서 9종, 홍고추와 건고추에서 12종 및 고춧가루에서 17종의 농약이 검출되었으며, 이 중 10종 농약(살균제 1성분과 살충제 9성분)이 잔류허용기준(MRL)을 초과하였다. MRL 초과율은 풋고추와 홍고추보다 건고추와 고춧가루에서 높았다. 일부 농약이 고추와 고춧가루에서 MRL을 초과하였으나 추정식이섭취량(EDI)은 ADI의 1.6% 미만으로 안전한 것으로 평가되었다. 또한 홍고추를 건조할 때 중량은 $5.9{\sim}7.8$배 감소하였으나 농약 잔류량은 $1.7{\sim}8.2$배 증가하여 고춧가루의 농약잔류허용기준 적용에 대한 재검토가 필요한 것으로 판단되었다.