• Journal of The Korean Society of Agricultural Engineers
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• v.57 no.3
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• pp.77-86
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• 2015

The agricultural water management generally has focused on water resources for crop production but it could be affected by the food consumption pattern. The aim of this study is to estimate virtual water consumption for food consumption and calorie supply using the water footprint and virtual water concept. In addition, we estimated the virtual water requirements for increasing the food and calorie self-sufficiency adjusted by the government for food security. About $330.0m^3/cap/yr$ of virtual water was consumed for the main foods consumption in 1985, and it was increased to $450.0m^3/cap/yr$ in 2010. The rate of virtual water consumption by meats consumption was 28 % in 1985 but it was increased to 54 % in 2010. In other words, the total virtual water consumption by foods consumption was increased from 1985 to 2010 with the high rate of meats consumption. The average $1.29m^3$ of virtual water was consumed for supplying 1 calorie per capita in 2010 but about $10.1m^3/cal$ of virtual water was consumed by only bovine meats consumption. The food self-sufficiency is the main factor for food security in Korea. About $46.5Mm^3$ and $393.9Mm^3$ of virtual water were required in order to increase the food and calorie self-sufficiency of wheat by 1 % individually. This study showed the water consumption was related to food consumption and calorie supply pattern, and these results could be used as the indices for the agricultural water management considering the change of eating habit and food security.

• Molecules and Cells
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• v.42 no.12
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• pp.850-857
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• 2019

The Gram-negative opportunistic pathogen, Pseudomonas aeruginosa, has multiple multidrug efflux pumps. MexT, a LysR-type transcriptional regulator, functions as a transcriptional activator of the MexEF-OprN efflux system. MexT consists of an N-terminal DNA-binding domain and a C-terminal regulatory domain (RD). Little is known regarding MexT ligands and its mechanism of activation. We elucidated the crystal structure of the MexT RD at 2.0 Å resolution. The structure comprised two protomer chains in a dimeric arrangement. MexT possessed an arginine-rich region and a hydrophobic patch lined by a variable loop, both of which are putative ligand-binding sites. The three-dimensional structure of MexT provided clues to the interacting ligand structure. A DNase I footprinting assay of full-length MexT identified two MexT-binding sequence in the mexEF-oprN promoter. Our findings enhance the understanding of the regulation of MexT-dependent activation of efflux pumps.

• Korean Journal of Agricultural Science
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• v.51 no.3
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• pp.399-412
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• 2024

This study aimed to analyze consumers' behaviors and reactions to the use-by date labeling system and provide policy implications for its efficient implementation, by utilizing 213 consumers data conducted via an Internet survey using the Google online form. We refer "pure consumption date" as the period that have passed sell-by date yet have not passed use-by date. Consumers' willingness to accept (WTA) for pure consumption date food was surveyed, which means the discount ratio of pure consumption date food compared to the original price by sell-by date. Setting the expected effects of use-by date labeling system as five: food waste reduction (waste), food purchasing cost reduction (cost), and international standardization (standard), etc., Tobit regression result showed waste had the greatest (negative) impact on consumer's WTA, while cost and standard had positive impact on consumer's WTA. The logistic regression result revealed that consumers trying to reduce grocery costs have higher probability to purchase use-by date labeling food, and further expect higher WTA. Also consumers valuing the importance of environmental protection or food quality are more likely to purchase use-by date food. Conversely consumers valuing food safety importance tend to have negative impact on purchasing use-by date food, hence expect higher WTA. It is noteworthy that consumers valuing the importance of promoting the use-by date labeling system have significantly higher probability of purchasing use-by date food. Additionally, consumers' WTA averaged 54.3%, implying that consumers are willing to purchase use-by date food when it is discounted more than 54.3% from the original price, where women expect higher WTA, the aged over 60 expect higher WTA, furthermore single-parent households expect 21.3% higher than the average WTA. However, old-aged, unmarried women, higher educated and higher income groups were negative in purchasing use-by date food. These results suggest that customized sales policy and effective promotion strategies reflecting socio-demographic characteristics of consumers would be necessary to achieve effective implementation of the newly introduced system.

• Journal of Korean Society of Rural Planning
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• v.23 no.3
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• pp.147-161
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• 2017

Climate changes from global warming and reduction in agricultural land result in volatility of prices of agricultural products, causing a imbalance of food market in Korea. It is necessary to develop a transnational food industry cooperation system among Korea, China and Russia that directly or indirectly affect food industry in terms of the whole industrial network. This study analyzes the value chain and linkage in the agriculture, forestry and fisheries industries in three nations. The unit structure and the industrial patterns of three nations were derived using the World Input-output Table (WIOT) from 2004 to 2014 every five years. This paper is expected to contribute to develop food security cooperation in the northern part of the Korean peninsula and to promote the mutual growth of food industry through industry linkage and cooperation.

• Korean Journal of Agricultural Science
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• v.37 no.2
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• pp.323-330
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• 2010

Korean government has endeavored to increase the exportation of agro-food, and the exporting processed food is one of the main concerns. However, there is little research to promote the exportation of Korean processed food, which is discussed in this paper. This paper analyzed the current situation of the exporting processed food and the government policy in Korea, and presents the strategy to increase the exporting. First, government programs should consider the market efficiency. Second, specified marketing strategies need to be developed after the overall analysis about the world market. Third, governmental support for product development and promotion should be expanded. Forth, efforts to increase the efficiency of logistics and food safety need to be magnified.

• Proceedings of the Microbiological Society of Korea Conference
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• 2002.10a
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• pp.51-55
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• 2002

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 2005.06a
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• pp.271-271
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• 2005

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2016.09a
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• pp.54-59
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• 2016

• Agribusiness and Information Management
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• v.5 no.2
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• pp.17-26
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• 2013

The purpose of this study is to prove that new values for the agricultural food area can be created by combining various big data collected in the agricultural food area and analyzing them in an appropriate analysis method. For this, the analysis techniques generally used were studied, and the use of the big data in the various areas of the current society was explored through practical application instances. In addition, by the current status and analysis instances of the big data use in the agricultural food area, this study was conducted to verify how the new values found were being used.

• Journal of Animal Reproduction and Biotechnology
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• v.35 no.1
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• pp.2-11
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• 2020

Assisted reproductive technologies (ART) merely depend on improving the oocyte maturation and their developmental competence to produce good quality embryos. Oocyte maturation passes through long and complex molecular steps starts from the early embryonic life and ends with sperm fertilization. Oocyte developmental competence can be attained by improving the nuclear and cytoplasmic mechanisms together with some epigenetic maturation. In this review, we highlight the cornerstones of oocyte maturation on both nuclear and cytoplasmic levels. Interfering or supporting these molecular mechanisms would help in the development of novel regulating agents for reproductive performance of humans and livestock species.