Background: In healthy dentin conditions, odontoblasts have an important role such as protection from invasion of pathogens. In mammalian teeth, progenitors such as mesenchymal stem cells (MSCs) can migrate and differentiate into odontoblast-like cells, leading to the formation of reparative dentin. For differentiation using stem cells, it is crucial to provide conditions similar to the complex and intricate in vivo environment. The purpose of this study was to evaluate the potential of differentiation into odonto/ osteoblasts, and compare co-culture with/without epithelial cells. Methods: MSCs and epithelial cells were successfully isolated from dental tissues. We investigated the influences of epithelial cells on the differentiation process of dental pulp stem cells into odonto/osteoblasts using co-culture systems. The differentiation potential with/without epithelial cells was analyzed for the expression of specific markers and calcium contents. Results: Differentiated odonto/osteoblast derived from dental pulp tissue-derived mesenchymal stem cells with/without epithelial cells were evaluated by qRT-PCR, immunostaining, calcium content, and ALP staining. The expression of odonto/ osteoblast-specific markers, calcium content, and ALP staining intensity were significantly increased in differentiated cells. Moreover, the odonto/osteogenic differentiation capacity with epithelial cells co-culture was significantly higher than without epithelial cells co-culture. Conclusions: These results suggest that odonto/osteogenic differentiation co-cultured with epithelial cells has a more efficient application.

한우에게 급여하는 사료 내 에너지원의 종류에 따라 반추위 미생물의 아미노산 조성에 차이가 있는지를 조사하고자 본 연구를 수행하였다. 국내 한우 비육우 사육에 주로 이용되는 에너지원 사료인 옥수수(T1), 생미강(T2), 소맥(T3) 그리고 소맥피(T4)로 반추위 환경과 유사한 연속식 배양기를 이용하여 72시간까지 배양을 진행하였다. 배양이 진행되는 동안 6시간 간격으로 배양액의 발효 성상을 확인하였으며 pH, NH3-N이 일정하게 유지되는 것을 확인하였으며, 배양 종료 시점인 72시간대에 미생물체 단백질 합성량(MPS), 미생물의 아미노산 조성 및 미생물 균총 변화를 분석하였다. 배양액의 pH는 모든 처리구에서 배양 기간동안 5.5~7.0을 유지하였다. Total VFA 농도는 T1이 23.13 mM으로 가장 낮았고, T4가 29.93 mM으로 가장 높았다(p<0.05). A (acetate) :P (propionate) 비율은 T1이 1.48로 가장 낮았으며, T4가 2.81로 가장 높게 나타났다 (p<0.05). Butyrate는 T1이 2.37 mM으로 가장 낮았으며, T2, T3 그리고 T4는 4.37~4.58 mM으로 차이가 없었다(p<0.05). MPS는 T2 (332.5 mg/L)와 T3 (320.2 mg/L)가 높았고 T1 (137.5 mg/L)와 T4 (154.2 mg/L)로 낮게 나타났다(p<0.05). DGGE band 분석결과 모든 처리구는 57.5 % 이하의 유사도가 나타났다. 미생물의 총 아미노산 함량은 T1 (31.59 %)과 T3 (31.33 %)가 가장 높았으며, T2 (20.09 %)가 가장 낮았다 (p<0.05). 이는 급여된 사료 내 총 아미노산 함량과 반대되는 결과로 나타났다. 따라서, 본 연구에서 한우 급여 에너지원 사료에 따른 반추위 내 미생물 발효 특성과 미생물체 단백질 합성량이 미생물 군집에 영향을 미치며 이에 따라 미생물의 총 아미노산 함량에 영향을 미친다는 것을 확인하였다.

This study deals with the maximum thermal load analysis and optimal capacity determination method of tank culture system for applying seawater source heat pump to save energy and realize zero energy. The location of the fish farm was divided into four sea areas, and the heat load in summer and winter was analyzed, respectively. In addition, two representative methods, the flow-through aquaculture system and the recirculation aquaculture system were reviewed as water treatment methods for fish farms. In addition, the concept of the exchange rate was introduced to obtain the maximum heat load of the fish farms. Finally, power consumption for heat pumps was analyzed in the view point of sea areas, tank capacity, and exchange rate based on the calculated maximum thermal load.

Lilium dauricum is a rare and endangered species belonging to the family Liliaceae. The species contains several bioactive compounds used as functional foods and medicinal agents in Northeast Asia. This study aimed (1) to establish an in vitro bulblet culture using an air-lift bioreactor and callus culture for the conservation of L. dauricum and obtaining its bioactive compounds; (2) investigate the plant phenolic compounds from both cultures system. The highest bulblet production with 12.5-fold increase in growth rate was obtained using MS medium supplemented with 0.5 g L-1 BA and 3% sucrose. Addition of 7% sucrose facilitated bulblet enlargement, with approximate 2.5- and 7-fold increases in diameter and fresh weight, respectively. The highest rate of callus (100%) was obtained using a combination of 1.0 mg L-1 picloram and 0.5 mg L-1 Kinetin. The callus proliferation occurred on MS medium supplemented with 1.0 mg L-1 picloram, 0.25 mg L-1 kinetin, and 0.25 g L-1 casein hydrolysate. There was a significant difference in the total phenolic compound content of callus, which was 1.5-fold higher than that in the bulblets. These findings indicate a suitable system for optimizing both bulblet and callus culture of L. dauricum, therefore, providing useful bio-materials for industrial purposes and contributing to the conservation of this species.

Although somatic cell nuclear transfer (SCNT)-derived embryonic stem cells (ESCs) in pigs have great potential, their use is limited because the establishment efficiency of ESCs is extremely low. Accordingly, we tried to develop in-vitro culture system stimulating production of SCNT blastocysts with high performance in the colony formation and formation of colonies derived from SCNT blastocysts for enhancing production efficiency of porcine ESCs. For these, SCNT blastocysts produced in various types of embryo culture medium were cultured in different ESC culture medium and optimal culture medium was determined by comparing colony formation efficiency. As the results, ICM of porcine SCNT blastocysts produced through sequential culture of porcine SCNT embryos in the modified porcine zygote medium (PZM)-5 and the PZM-5F showed the best formation efficiency of colonies in α-MEM-based medium. In conclusion, appropriate combination of the embryo culture medium and ESC culture medium will greatly contribute to successful establishment of ESCs derived from SCNT embryos.

In recent years, maintaining transparency has become a trend among brands, and a better level of supply chain transparency has been demonstrated to positively affect consumer environmental concern and conscious behavior. Consumers may accept transparency efforts as a signal of the brand goodwill and perceive it as a visibly sustainable effort that can convert brand trust. In the information transparency trend, eco-certification plays an important role as a tool to inform consumers about sustainability. However, facing large amounts of information, consumers spend much time filtering information, so the accuracy of the obtained information can be compromised. The Higg index is a sustainable verification platform that reveals the entire activities of supply chains. However, most consumers are facing an overload of information that could confuse their processing of any information. In this context, the present study seeks to examine the effect of business transparency to conscious consumer behavior and purchase intention. Second, this study deals with the moderating effects of sustainable knowledge on the relationship between business transparency, environmental concern, and brand trust. Third, we explore the effects of high and low level of consume knowledge of sustainability on the relationship between business transparency and brand trust. In terms of the methodology used in the present study, an off-line survey of Korean consumers was conducted. SPSS 21.0 was used for data analysis aiming to test the proposed model and research hypothesis. The mains results of this study are as follows. First, business transparency has a positive effect on environmental concern, brand trust, and consumer willingness to conscious behavior. Second, consumer sustainable knowledge has a moderating effect on business transparency for environmental concern and brand trust. Taken together, the findings of the present study provide meaningful implications for marketers by highlighting the importance of transparency and introduction of a transparent eco-certification for communication with consumers. To successfully influence consumer willingness to assume conscious behavior, brands are advised to provide standardized transparency labels, rather than complicated information.

The present study was conducted from August to December 2016 in a cylindrical water tank with a diameter of 1 m, a height of 4 m and a capacity of 3,000 L. The field water and sediment from the Nakdong River were also sampled for the experimental culture (field water+sediment) and control culture (field water), respectively. In this study, we aimed to investigate phytoplankton succession pattern using the phytoplankton functional group in the enclosed culture system. A total of 50 species in 27 genera including Chlorophyceae (30 species), Bacillariophyceae (11 species), Cyanophyceae (7 species), and Cryptophyceae (2 species) were identified in the experimental and control culture systems. A total of 19 phytoplankton functional groups (PFGs) were identified, and these groups include B, C, D, F, G, H1, J, K, Lo, M, MP, N, P, S1, TB, W0, X1, X2 and Y. In particular, W0, J and M groups exhibited the marked succession in the experimental culture system with higher biovolumes compared to those of the control culture system, which may be related to the internal cycling of nutrients by sediment in the experimental culture system. The principal component analyses demonstrated that succession patterns in PFG were associated with the main environmental factors such as nutrients (N, P), water temperature and light intensity in two culture systems. In conclusion, the present study showed the potential applicability of the functional group for understanding the adaptation strategies and ecological traits of the phytoplankton succession in the water bodies of Korea.

식물공장에서는 작물에 필요한 재배환경을 인위적을 조절하여 고품질 농산물에 대한 연중 계획생산이 가능하다. 본 연구는 완전제어형 식물공장 재배에 적합한 콜라비 품종을 선발하고자 실시하였다. 실험은 완전제어형 식물공장에서 수행하였고, 식물재료는 적색의 콜라비 품종인 ‘아삭콜’, ‘콜리브리’와 ‘퍼플킹’ 품종을 사용하였다. 인공광원은 LED광이었으며, 광도와 일장은 각각 249μmol·m·2·s-1, 12/12시간(밤/낮)이었다. 순환식 담액수 경방식으로, 정식 후 57일까지 재배하였다. 정식 후 43 일째에 전체 생체중과 괴경의 생체중 및 엽면적은 품종 간에 유의적인 차이를 보이지 않았다. 건물중과 괴경은 ‘아삭콜’ 품종이 가장 높게 나타났으며, 엽수는 ‘퍼플킹’ 품종이 가장 많았다. 당도와 수량는 ‘아삭콜’ 품종이 가 장 높았다. 생육과 상품수량을 고려해 볼때, 완전제어형 식물공장에 적합한 콜라비 품종은 ‘아삭콜’ 이었다.

국내 출원 예정인 알스트로메리아 유망 교잡 계통 C269의 기내번식체계 조건 구명을 통해 국산묘의 안정적인 보급에 기 여하고자 본 연구를 수행하였다. 생장점을 MS배지에 치상하 여 초대배양 후, 준비된 근경 생장점은 근경 증식을 위해 6-Benzylaminopurin(BAP)와 Kinetin(KIN)처리를 하였다. KIN 처리구의 경우, 신초 발생량이 많고 조밀하게 생장 했다. 이는 근경 증식을 위한 근경 분리가 힘들어 근경 증식에는 적합하 지 않았다. BAP 처리구의 경우 0.2mg·L-1이하의 농도 배지 에서 키운 근경을 분리하여 증식 시키는 것이 적합할 것으로 생각되었다. 뿌리 발근 배지는 1-Naphthaleneacetic acid(NAA) 0.25mg·L-1첨가 배지에서 가장 많은 뿌리가 발생되었다. 하 지만, NAA 호르몬 처리에 의한 비정상적인 뿌리 비대가 발생 되었다. 반대로 무처리구에서는 정상적인 뿌리, 세근 및 뿌리 털 발생이 더 좋았다. 순화 과정 중에는 호르몬 처리구 보다 무처리구가 많은 생존률을 보였을 뿐만 아니라 신초 발생 및 지상부 생육도 무처리구에서 왕성하였다. 결론적으로 알스트 로메리아 교잡 계통 C269는 BAP 0.2mg·L-1처리에서 근경을 증식한 후 MS 배지로 옮겨 치상 후 발근을 유도하여 순화를 시키는 것이 효과적인 증식체계로 판단되었다.

Information and communication technology(ICT) around the world in the 21st century presents a new vision of agriculture. Time, place, and the high-tech industry to overcome barriers to the fusion of the so-called “smart agriculture” is changing the landscape of agriculture. Precision Agriculture’s core container production for the mushroom cultivation temperature, humidity, irradiation, self-regulation, such as carbon dioxide, the optimal environment for mushroom cultivation was implemented. The Lentinula edodes (shiitake) is an edible mushroom native to East Asia, which is cultivated and consumed in many Asian countries. It is considered a medicinal mushroom in some forms of traditional medicine. The fungus was first described scientifically as Agaricus edodes by Miles Joseph Berkeley in 1877. It was placed in the genus Lentinula by David Pegler in 1976. We controlled different light source (Blue-Red-White combined LED, blue LED, red LED and fluorescent light) with different intensity of LED irradiation (1.5, 10.5, 20.5 μmol/m2s for LEDs) to compare growth and development. Lights were treated with 12 hour on/ 12hour off cycle maintained in a controlled room with 19 ~ 21oC temperature, 80~90% humidity, and 1,000 ppm CO2 atmosphere concentration for 30 days. Growth and development differed from the LED color source and intensity of LED irradiation. Growth and development was most effective in 10.5 μmol/m2s for blue LED. All LED light sources showed less growth and development in lowest intensity of irradiation, which indicates that higher than 1.5 μmol/m2s for LED is not effective. After harvesting fruit bodies, we measured their weight and length, thickness of pileus and stipe, chromaticity, and hardness. 10.5 μmol/m2s blue LED group was the best result of harvest with average individual weight (24.7g) and length (61.98mm), thickness (29.93mm) of pileus and length (33.60mm), thickness (16.86mm) of stipe with fine chromaticity, hardness. This results show us that 10.5 μmol/m2s blue LED was the best effect on growth and development of Lentinus edodes (shiitake) mushroom’s ICT system container type environment.

Information and communication technology(ICT) around the world in the 21st century presents a new vision of agriculture. Time, place, and the high-tech industry to overcome barriers to the fusion of the so-called “smart agriculture” is changing the landscape of agriculture. Precision Agriculture’s core container production for the mushroom cultivation temperature, humidity, irradiation, self-regulation, such as carbon dioxide, the optimal environment for mushroom cultivation was implemented. Auricularia auricula-judae, known as the Jew's ear, wood ear, jelly ear or by a number of other common names, is a species of edible Auriculariales fungus found worldwide. The fruiting body is distinguished by its noticeably ear-like shape and brown colouration. The fungus can be found throughout the year in temperate regions worldwide, where it grows upon both dead and living wood. We controlled different light source (Blue-Red-White combined LED, blue LED, red LED and fluorescent light) with different intensity of LED irradiation (1.5, 10.5 and 20.5 μmol/m2s for LEDs) to compare growth and development. Lights were treated with 12 hour on/ 12hour off cycle maintained in a controlled room with 19 ~ 21oC temperature, 85~95% humidity, and 1000ppm CO2 atmosphere concentration for 30 days. Growth and development differed from the LED color source and intensity of LED irradiation. Growth and development was most effective in 1.5 μmol/m2s irradiation for blue LED. All LED light sources showed less growth and development in highest intensity of irradiation, which indicates that higher than 20.5 μmol/m2s for LED is not effective. After harvesting fruit bodies, we measured their weight, length, width, thickness and chromaticity of fruit bodies. 1.5 μmol/m2s blue LED group was the best result of harvest with average individual weight (5.38g), length (65.37mm), width (56.87mm) and thickness (13.51mm) with fine chromaticity. This results show us that 1.5 μmol/m2s blue LED was the best effect on growth and development of Auricularia auricula-judae mushroom’s ICT system container type environment.

Overwintering and succession of phytoplankton community with physicochemical and biological characteristics were investigated in pilot culture system. Water and phytoplankton samples were collected twice a week from February 23 to June 28, 2016. A total of 17 overwintering taxa including cyanophyceae, chlorophyceae, bacillariophyceae were identified in the experimental group in winter (February), and these overwintering species showed a marked succession pattern along with environment changes. In the process of phytoplankton succession, a total of 56 species in 28 genera were identified in two (experimental, control) pilot culture system. In the experimental group, 52 phytoplankton species in 24 genera were identified, and the number of taxa was highest in chlorophyceae (35 species), followed by Bacillariophyceae (9 species), Cyanophyceae (5 species) and others (3 species). In the control group, 25 phytoplankton species in 14 genera were classified and these taxa consisted of 17 chlorophyceae, 3 cyanophyceae, 2 Bacillariophyceae and 3 others. The standing crops ranged from 40 to 325,450 cells mL-1 in the experimental group, and from 900 to 37,100 cells mL-1 in the control group, respectively. The dominant species were represented by Monoraphidium minutum, Microcystis aeruginosa, Rhodomonas lacustris, Ankyra judai and Chlorella vulgaris in the experimental group; and M. minutum and Coenochloris cf. pyrenoidosa in the control group. In conclusion, overwintering and succession of predominant phytoplankton species developed due to interactions of internal environmental factors (physicochemical and biological factors) in the pilot culture system.

Timing, place, and the high-tech industry to overcome barriers to the introduct of the so-called “smart agriculture”. The core factors of precision agriculture, including temperature, humidity, location information, and real summary information, are all significant for ICT controlling technique. The system is a four-season container allowing mushroom product, humidity, illumination, and factors such as carbon dioxide were regulated to create the optimal environment for mushroom cultivation. Hericium erinaceum (also called Lion's Mane Mushroom, Bearded Tooth Mushroom, or Bearded Tooth Fungus) is an edible and medicinal mushroom in the tooth fungus group. During approximately 40 days of incubation, 1.4 kg of oak sawdust was used as the test medium. The humidity, temperature, and CO2 density were maintained at >85–95%, 18–20oC, and 700–1,000 ppm, respectively, in the container type culture system. The time for primordium formation was observed to be 4–7 days. The amount of fruitbody production was 74–95 g per bag. This technique will be used to establish a new community support program, in conjunction with international movement, domestic sales and exports are also planned.

Time, place, and the high-tech industry to overcome barriers to the fusion of the so-called "smart agriculture" is changing the landscape of agriculture. Precision Agriculture's core temperature, humidity, location information, and summary information in real time, all significant ICT controlling technique. The system is a four-season container production for the mushroom cultivation temperature, humidity, illumination, self-regulation, such as carbon dioxide, the optimal environment for mushroom cultivation was implemented. Hericium erinaceum (also called Lion's Mane Mushroom, Bearded Tooth Mushroom, or Bearded Tooth Fungus) is an edible mushroom and medicinal mushroom in the tooth fungus group. Native to North America, Europe and Asia it can be identified by its tendency to grow all the spines out from one group (rather than branches), long spines (greater than 1 cm length) and its appearance on hardwoods. About 40 days of incubation 1.5kg oak sawdust was used as the test medium bag. The humidity was maintained more than 85~95% and temperature was 18~20°C, and CO2 density was 500~1,000ppm. The days for primordium formation showed us 6~12 days. The amount of fruitbody production was 110~260g per bag. This technique to establish new community support program in conjunction with the international movement, domestic sales and exports are also planned.

본 연구는 의료살균기술의 하나인 전극을 이용한 전기 충격 살균법을 순환식 수경재배의 배양액 재순환을 위한 배액 살균기술로 활용하고, 배액의 전기살균소독시스템을 구축하고자 할 때, 살균소독 효과가 높으며, 친환경적이고 경제적인 배양액 살균소독기술의 개발 및 전기살균소독시스템에서 사용될 전극의 최적 조건을 구명하고 전기소독의 가능성을 확인하기 위해 수행되었다. 전기살 균소독시스템 구축 시 적정 전극소재 구명을 위해 금속 전도체의 특성 조사 및 전기실험을 실시하여 배액의 pH 와 EC변화유무와 침전물 발생여부 및 배액의 원소변화 유무를 분석하였다. 새로이 개발된 전기살균소독시스템 구축 시 가장 적합한 금속 전도체 전극소재로는 전기전도도가 높고, 저항이 적으며, 소재의 수급이 용이하고, 가격이 저렴한 스테인리스 스틸임을 확인하였으며. 또한 스테인리스 스틸을 전극으로 사용하였을 때, 전기를 공급하기 전과 24V 이내의 전기를 공급한 후의 배양액내 원소변화는 거의 없는 것으로 분석되었다. 전극의 두께 보다는 넓이가 증가함에 따라 전류의 양이 증가하였으며 전극의 거리가 멀수록 목표 전류량에 도달하는 시간이 증가하였다. 적합한 전류량에 따른 주요 병원균의 살균 력을 조사한 결과 대표적 세균병인 풋마름병의 원인균인 Ralstonia solanacearum가 전류 15V-3A 170초에서 97% 가 사멸되는 것을 확인하였으며 곰팡이병인 Fusarium oxysporum은 24V-10A에서 98%의 살균력을 보였다.

당귀는 미나리과에 속하는 약용식물로서 한국, 일본, 중국 등에서 재배된다. 본 실험의 목적은 형광등과 LED 광조사가 당귀 생육의 발달과 기능성 물질로 알려진 Decursinol angelate와 Decursin의 생성에 미치는 영향을 분석하고자 수행하였다. 당귀 ‘만추’ 종자를 우레탄 스폰지에 파종 후 4주간 유리온실에서 육묘하였다. 본엽이 3 매 전개된 120주를 저면관수 시스템에 이식하였다. LED [적색: peak wavelength 660nm, 청색: peak wavelength 455nm, white = 3:2:4 비율]와 형광등 조건에서 최상부 군락에서 광합성유효광량자속은 180±7μmol·m-2·s-1로 동 일하였으며 16:8의 일장조건에서 5주간 재배하였다. LED 처리에서 당귀의 엽수는 유의적 차이는 없었지만, 형광등 처리와 비교하여 13.5% 증가하였으며, 형광등 처리에서 당귀의 엽장과 엽폭의 비율과 초장은 각각 24, 13% 증가하였으며 최대 근장은 두 그룹이 유사하였다. LED 처리한 당귀의 지상부 생체중과 건물중은 50, 42% 씩 증가하였으며, 지하부는 125, 45%씩 증가하였다. 형광등에서 재배된 당귀의 Decursin과 Decursinol angelate 는 LED처리한 당귀보다 지상부에서 단위 건물중당 188, 27% 증가하였으며, 지하부에서 78, 8% 각각 증가 하였다. LED와 형광등 처리에서 재배된 당귀의 한 개체 당 Decursin과 Decursinol angelate의 함량은 132과 122mg 이었다. 결론적으로 기능성 물질은 형광등에서 증가되고 생장은 LED 조건에서 증가되는 것으로 나타났다.