• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.9
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• pp.1132-1140
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• 2016

According to global trend, despite the overall scale of agricultural industry has been downsized, agriculture accommodating cutting-edge ICT technologies has been proliferated, and various timely-issued relevant researches have been on progress to deploy the future food cultivation. In this paper, we propose an effective nutrient management system with web-based monitoring with functionality of controlling temperature, humidity, pH (hydrogen ion), EC (Electric Conductivity), LED and cooling fan to maintain the hydroponic nurturing environment being optimal. In this paper, in order the arduino hardware and java software are employed to control the nurturing environment automatically in optimal fashion. In proposed system, due to the usage of WiFi router with the socket communication and DB-assisted Web server with proper interfaces, it allows to facilitate the management to keep monitoring and controling overall hydroponic nurturing environment. Since the proposed Web-based management system provides the superior reliability, the short nurturing period and the robustness to the pest by controlling LED emitting color rather than conventional system, so it can be applied and appropriate for in-house vegetable factory overcoming limitation of time and location.

• Korean Journal of Heritage: History & Science
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• v.33
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• pp.274-289
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• 2000

Koryo Dynasty has greatly effected the meat eating practice in Korea. And by focusing on this period, this paper has in vestigated how this practice influenced and effected our meat eating culture. The 'Orders to Prohibit Butchery' written on Koryo's history books were to encourage stockbreeding rather than to follow the Buddhist policy they followed. By encouraging stockbreeding, they wanted to promote the usage of cattle in farming and thus increasing agriculture industry as a whole. Nonetheless, records show that hunting was permitted to a certain degree. And this allowed the civilians to depend their meat supply from hunting and for the fire field farmers to capture wild animals that harmed their crops. Moreover, through 'Kiwujae' (Kiwujae - a shamans service to pray for rain / ritual (praying) for rain.), we could see that earlier part of Karyo's rituals and ceremonies followed the Buddhist tradition while the latter followed the Shamanism tradition. Perhaps this was the result of allowing 'meat' for the service offerings. As Shamanism could be considered as a religion that allowed 'meat', prevalence of Shamanism was promoting meat-eating at mess(after these rituals and ceremonies that offered food (meat inclusive) to their guardian or god, the civilians would dine together.). In relation, this public eating practice slowed down the progress for storage technique. Therefore, meat-eating was developed through public and mass dining rather than through the form of family or private. On this account, we can safely regard meat-eating practice as a 'public event'. On the other hand, the history of castration is not so long in Korea. And the purpose of such practice was to use the stock for farming rather than to yield high quality meat. It is known that Mongol in Koryo period has greatly influenced meat cooking in Korea. And the exemplary dish is the 'tang' (tang - kind of soup. However less creamy, clearer broth and with more ingredients than soup.). However, the tang we ate in everyday life had the same cooking method as the tang we offered for services. Moreover, since we did not use castrated animals for our offering as the Mongolians, we must not have been greatly influenced by them. But if so, perhaps the influences would have been limited to the nobility.

• Journal of fish pathology
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• v.23 no.1
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• pp.131-135
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• 2010

Unidentified viral disease with high mortalities has been recorded consistently since 1998 in cultured carp Cyprinus carpio in Korea. In the present study, we investigated the histopathological characteristics of the diseased carp to evaluate the relatedness to koi herpesvirus disease (KHVD). Histopathogical examination revealed severe necrotic changes and vacuous cells in the kidney, spleen, liver, pancreas, heart and intestine, but eosinophilic intranuclear inclusion, a typical characteristic of KHV infection was not detected. These results suggest that KHVD may be not a cause for the high mortality occurring among cultured carp in Korea and possibly other unknown viral disease could are related.

• Asian-Australasian Journal of Animal Sciences
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• v.13 no.11
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• pp.1604-1608
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• 2000

Penicillin antibiotics such as penicillin G, ampicillin and amoxicillin have been widely used in the pig industry to control salmonellosis, bacterial pneumonia, and urinary tract infections. Extensive use of antibiotics in veterinary clinics has resulted in tissue residues and bacterial resistance. To prevent unwanted drug residues entering the human food chain, extensive control measures have been established by both government authorities and industries. The demands for reliable, simple, sensitive, rapid and low-cost methods for residue analysis of foods are increasing. In this study, we established a rapid prediction test for the detection of pigs with unacceptable tissue residues of penicillins. The recommended therapeutic doses of three penicillins, penillin G (withdrawal time, 7 days), ampicillin (withdrawal time, 7 days) and amoxicillin (withdrawal time, 14 days), were administered to three groups of 20 pigs each. Blood was sampled before drug administration and during the withdrawal period. The concentration of penicillins in plasma, determined by a semi-quantitative ELISA, were compared to that of internal standard, 4 ppb, which corresponded to the Maximum Residue Limit in milk. The absorbance ratio of internal standard to sample (B/Bs) was employed as an index to determine whether drug residues in pig tissues were negative or positive. That is, a B/Bs ratio less than 1 was considered residue positive, and larger than 1 negative. All 60 plasma samples from pigs were negative to three penicillins at pretreatment. Penicillin G could be detected in the plasma of the treated pigs until day 4 post-treatment and ampicillin until day 2, whereas amoxicillin could be detected until day 10 of its withdrawal period. The present study showed that the semi-quantitative ELISA could be easily adapted to detect residues of penicillin antibiotics (penicillin G, ampicillin and amoxicillin) in live pigs.

• Asian-Australasian Journal of Animal Sciences
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• v.23 no.6
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• pp.825-832
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• 2010

The United Nations Convention on Biological Diversity defines biotechnology as "Any technological application that uses biological systems, dead organisms, or derivatives thereof, to make or modify products or processes for specific use" Biotechnology has made tremendous contributions to improve production efficiency of agriculture during the last century. This article reviews successful examples of application of bio-fermentation in improving swine nutrition efficiency mainly based on the authors'z own research experience. Production of feed grade supplemental amino acids by bio-fermentation allowed nutritionists to formulate accurate feed for optimal lean growth and reduced nitrogen excretion. Recent issues with high feed grain prices caused potential feed quality problems. Bio-fermentation allowed nutritionists to use exogenous supplemental enzymes such as phytase and NSPases in swine diets, thereby improving nutrient utilization and reducing nutrient excretion to the environment. Yeast metabolites are also produced by bio-fermentation and have been repeatedly shown to improve milk production of sows during early lactation even though actual mechanisms are still to be investigated. Bio-fermentation technology also allowed nutritionists to prepare vegetable protein sources with large protein molecules and anti-nutritional factors suitable for feeding newly weaned piglets, as selected microorganisms significantly reduce specific anti-nutritional factors and size of peptides. Preparations of vegetable protein sources suitable for newly weaned pigs will greatly contribute to swine nutrition by providing efficient alternatives to the use of animal protein sources that are often expensive and somewhat against societal preference. Considering the few examples listed above, biotechnology has closely influenced improvement of production efficiency in the swine industry. As we have limited resources to produce meat to satisfy ever-increasing global demands, extensive adaptation of biotechnology to enhance production efficiency should be continued. However, at the same time, wise and careful application of bio-technology should be considered to ensure production of safe food and to meet the expectations of our society.

• Microbiology and Biotechnology Letters
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• v.50 no.3
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• pp.319-327
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• 2022

γ-Aminobutyric acid (GABA) is a multi-functional compound with broad applications for food industry. GABA producing bacteria were isolated from cabbage kimchi. Among them, B737 was the best GABA producer when culture supernatants were analyzed by TLC. B737 was identified as Levilactobacillus brevis by 16S rRNA gene sequencing. Its glutamate decarboxylase (GAD) gene was cloned by PCR and the nucleotide sequence determined. B737 GAD consisting of 485 amino acids is the largest in size among GADs reported from LAB so far. gadB from L. brevis B737 was overexpressed in Escherichia. coli BL21(DE3) using pET26b(+).pET26b(+). The recombinant GAD was purified and its size was 55 kDa by SDS-PAGE. Maximum GAD activity was observed at pH 5 and 40℃ and the activity was dependent on pyridoxal 5'-phosphate. K_m and V_max of recombinant GAD were 6.2 ± 0.06 mM and 0.34 ± 0.002 mM/min, respectively. L. brevis B737 can be used as a starter for fermented foods with high GABA contents.

• Journal of fish pathology
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• v.23 no.1
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• pp.107-112
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• 2010

Parasitism of Pseudocaligus sp. in wild grass puffer Takifugu niphobles in the coast of Yeosu in spring, 2007 was identified. The preadult and adult stages of Pseudocaligus sp. were observed, which consisted of cephalothorax, genital segment and abdomen. Lunules were present on the anterior margin of the frontal plate. In order to develop the treatment method, we examined the effects of formalin and fresh water on the parasite. The Pseudocaligus sp. were detached from the host fish by bathing at concentrations of 50 to 400 ppm formalin within 60 min, but 57% was exterminated to fresh water for 90 min.

• Asian-Australasian Journal of Animal Sciences
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• v.13 no.12
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• pp.1775-1778
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• 2000

Oxytetracycline has been widely used in the cattle industry to control pneumonia, shipping fever, foot rot, bacterial enteritis, and uterine infections. Extensive use of antibiotics in veterinary clinics has resulted in residues in tissue and bacterial resistance to antibiotics. To prevent unwanted drug residues from entering the human food chain, extensive control measures have been established by both government authorities and industries. The demands for reliable, simple, sensitive, rapid and low-cost methods for residue analysis of foods are increasing. In this study, we established a rapid test for tissue residues of oxytetracycline in cattle. The recommended therapeutic dose of oxytetracycline (withdrawal time, 14 days) was administered to 10 cattle. Blood samples were collected from each cow before drug administration and during the withdrawal period. The concentration of oxytetracycline in plasma, determined by a semi-quantitative ELISA, was compared to that of the internal standard, 10 ppb. The absorbance ratio of internal standard to sample (B/Bs) was employed as an index to determine whether the residues in cattle tissues were negative or positive. That is, a B/Bs ratio less than 1 was considered as residue positive and that greater than 1 as negative. Based on this criterion, all plasma samples from cattle were negative to oxytetracycline at pre-treatment. Oxytetracycline could be detected in the plasma treated cattle until day 14 post-treatment. The present study showed that the semi-quantitative ELISA could be easily adapted in predicting tissue residues for oxytetracycline in live cattle.

• Archives of design research
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• v.12 no.3
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• pp.155-164
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• 1999

With the increase of milk consumption upto 54.5kgjperson as af the year 1994, dairy market has been mainly shared by a few specialized companies. Different from these, there are also remarkable companies like YeonSe Dairy, Konkook Dairy and SamYook University Food which are associated with Universities. These university-originated brands differentiate from others in the market with the advantage of positive university image and result in synergy effect between product image and univiersity PRo Located in Ansung, one of the most famous dairy areas, HanKyong National University designated as characterized university for Dairy by the Ministry of Agriculture and Forestry in 1996 has a big. advantage to build new dairy brand with attractive merits as like high education institute with R'll'&'ll'D, good logistics from market area, environmental condition for dairy industry and historical background as Agricultural university. Our New dairy brand has been created under the following concepts to have concrete brand image ; 1. Confidence - university logo 'll'&'ll' symbol designed together with "Characterized university for Dairy by government" 2. Fresh - Image differentiation through creative brand symbol 3. Health - Individual brand development specialized by each product

• Journal of The Korean Society of Agricultural Engineers
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• v.60 no.5
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• pp.1-15
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• 2018

This study aims to effective survey on actual condition for impact and vulnerability assessment on climate change in agriculture and rural community (limited to rural water and agricultural infrastructure, Paragraph 3, Article 2 of the Rearrangement of Agricultural and Fishing Villages Act) entrusted to Korea Rural Community Corporation based on the Law (Paragraph 2, Article 47 of the Framework Act on Agriculture, Rural community and Food industry). The results are summarized as follows. The rural water was divided into three categories (abnormal climate, water use, and flood control), and 31 indicators were selected. The reservoirs were divided into four categories, and 20 indicators were selected. The pumping stations were divided into two categories, 7 indicators, and the drainage pump stations were divided into two categories, 5 indicators were chosen. A survey on actual condition of each indicator was conducted and the result of the impact assessment was calculated. The 65 rural water showed values ranged from 0.855 to 1.308. The reservoir ranged from 0.966 to 23.338 as a result of the impact assessment on the 16 indicators. The pumping station was able to calculate the results of the safety inspection and the thorough safety inspection, and the drainage pump station was able to calculate only the result of the safety inspection. It is judged that it will be necessary to secure and analyze data on indicators with no data in the future. The results of this research can be utilized as baseline data that can deal with climate change preemptively.