• Title/Summary/Keyword: BioSIM

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Monitoring of Drying Conditions for Gastrodia elata Blume by Response Surface Methodology (반응표면분석에 의한 천마의 건조조건 모니터링)

  • Kim, Seong-Ho;Kim, In-Ho;Kang, Bok-Hee;Lee, Sang-Han;Kwon, Taeg-Kyu;Lee, Jin-Man
    • Food Science and Preservation
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    • v.13 no.6
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    • pp.740-748
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    • 2006
  • The Chunma (Gastrodia elata Blume) requires a simple pre-treatment, due to inconvenience or preservation, toxicities, and pungencies in intact state. Various drying conditions were examined to establish the physicochemical properties of Chunma by the response surface methodology (RSM). Weter activity and total phenolic acid contents of Chunma dried extracts were optimal at 79.56C and 79.64C for 7.17 hr and 8.74 hr, respectively, for their characteristics. Electron-donating ability and nitrite-scavenging activity were optimal at 79.79 and 7.99C for 8.57 and 8.07 hr. We generated a regression equation for each variable and then superimposed the optimal condition in acquiring values for each frying process factor, physicochemical properties, resulting in that the optimal drying condition was at 7580C for 89hr.

Fruit Quality and Occurrence of Brown Leaf Spot Disease (Pseudocercospora vitis) according to the Width of Plastic Shelter in the Grape 'Campbell Early' (포도 '캠벨얼리'의 비가림 폭에 따른 과실품질 및 갈색무늬병 발생양상)

  • Kim, Su Jin;Park, Seo Jun;Hur, Youn Young;Nam, Jong Chul;Ko, Sang Wook;Jung, Sung Min
    • Journal of Bio-Environment Control
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    • v.24 no.2
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    • pp.113-118
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    • 2015
  • The objective of this experiment was to evaluate the effects of application wide plastic shelter (WPS) in the 'Campbell Early' grape. WPS was developed 30cm wider than standard plastic shelter (SPS; 210cm). Under the plastic shelter, the average daily temperature was 23C higher than ambient temperature, but WPS treatment was 0.51C higher than SPS treatment. However, relative humidity 15~20% lower than ambient and shown different result between two treatments annually. The occurrence of brown leaf spot disease caused by Pseudocecospora vitis on the vineyard decreased 55.6% (2012) and 17.2% (2013) under WPS than SPS. Grape bunches collected two harvest seasons (2012, 2013), were analyzed fruit quality (total soluble solid; TSS, titratable acidity; TA, berry weight, berry size). In 2012, grapes had no differences in the quality of two treatments, but in 2013, significantly increase 0.4Bx of TSS and decrease 0.8% of TA on the WPS than SPS. It suggests that the application WPS reduced the incidence of brown leaf spot disease annually, and then affect to the fruit quality.

Influence of Amount of Waste Nutrient Solution and Compost on Growth and Quality of Tomato Grown by Fertigation (폐양액 관비량과 퇴비 시용량이 토마토의 생육과 품질에 미치는 영향)

  • Zhang, Cheng-Hao;Kang, Ho-Min;Kim, Il-Seop
    • Journal of Bio-Environment Control
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    • v.18 no.2
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    • pp.119-123
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    • 2009
  • Waste nutrient solution (WNS) that composed of nutrient solution of horticultural research institute in Japan and used for culture tomato in perlite hydroponics showed 1.92.4 dS/m of EC and 5.57.1 of pH. Although NH4+-N concentration of WNS decreased remarkably, the others did not change significantly as compared with supplied solution. The growth characteristics such as plant height, stem diameter, leaf length, and leaf width were increased as amount of compost was increased in 1 L WNS supply treatment. But there was not any regular tendency on growth characteristics in 2 L/plant WNS supply treatment. The chlorophyll content of tomato leaf was highest in I L/plant WNS supply and 4,000 kg/10a compost treatment. The fresh and dry weight, and yield of tomato fruit also increased with increase of amount of WNS and compost, and they were highest in 1 L WNS supply and 4,000 kg/10a compost treatment. The sugar content of tomato fruits was not influenced by amount of WNS and compost, fructose and glucose and total sugar was highest in 2 L/plant WNS supply and 2,000 kg/10a compost treatment. Therefore fertigation culture used WNS is environmentally friendly and can guarantee yield and quality of tomato fruits and growth of tomato plants.

Effect of Circulation Cycle of Nutrient Solution on the Dissolved Oxygen Concentration, and the Growth and Phytonutrient Contents of Leafy Vegetables Grown in DFT Systems (양액의 순환주기가 담액수경 엽채류의 용존산소 농도, 생육 및 식물영양소의 함량에 미치는 영향)

  • Seo, Tae-Cheol;Rhee, Han-Cheol;Rho, Mi-Young;Choi, Kyeong-Lee;Yun, Hyung-Kwon;Chun, Chang-Hoo
    • Journal of Bio-Environment Control
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    • v.18 no.2
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    • pp.112-118
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    • 2009
  • To determine the effects of circulation frequency of nutrient solution, three frequencies of 10min. on/10min. off; 10min. on/110min. off; and 10min. on/1,430min. off. treatments were applied to leafy vegetable production using deep flow technique (DFT) systems and their growth and phytonutrient content were investigated. In the 10min. on/I,430min. off treatment, dissolved oxygen concentration (DOC) 17 days after treatment decreased to 2.8mg. L1, known to be a low DOC that causes hypoxia, and thereafter decreased to 1.5mg. L1 20 days after treatment. Fresh weight of 7 leafy vegetables in the 10min. on/1,430min. off treatment was lower by 024% than those in the 10min. on/110min. off treatment, and those in the 10min. on/10min. off was higher by -234% than those in the 10min. on/110min. off treatment as control. As the more frequent circulation was applied, the higher phosphorous content and the lower carbon to nitrogen ratio (C/N ratio) and total ascorbic acid contents were resulted. Results indicate that the circulation frequency of 110min, on/110min. off could be recommended for the production of the tested leafy vegetables in DFT systems.

Influence of Temperature and Plant Growth Regulators on Pollen Germination and Pollen Tube Growth of Apple Cultivars Bred in Korea (온도 및 생장조절제가 국내 육성 사과 품종의 화분발아율 및 화분관 신장에 미치는 영향)

  • Kweon, Hun-Joong;Park, Moo-Yong;Song, Yang-Yik;Son, Kwang-Min;Sagong, Dong-Hoon
    • Journal of Bio-Environment Control
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    • v.25 no.3
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    • pp.184-192
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    • 2016
  • This study was carried out to investigate the effect of temperature (1540C) and the spraying plant growth regulators (GA4+7+BA and prohexadione-calcium) during full blooming on pollen germination and pollen tube growth of the commercial apple cultivars ('Fuji' and 'Tsugaru') and apple cultivars bred in Korea ('Chukwang', 'Gamhong', 'Hongan', 'Honggeum', 'Hongro', 'Hwahong', 'Hongso', 'Summer dream' and 'Sunhong'). Pollen germination and pollen tube growth were increased with increasing temperature from 15 to 25C, but high temperature over 30C inhibit those. The apple cultivar bred in Korea that shows the highest value on pollen germination and pollen tube growth at over 30C was 'Sunhong'. The spraying GA4+7+BA increased pollen germination and pollen tube growth than control, but that effect was not show at 40C. The spraying prohexadione-calcium was not affect to pollen germination and pollen tube growth. In conclusion, if the air temperature during full bloom of apple tree rises about 3035C, the spraying GA4+7+BA after artificial pollination will be good to increasing fruit set.

Effects of Non-drainage Hydroponic Culture on Growth, Yield, Quality and Root Environments of Muskmelon (Cucumis melo L.) (멜론 수경재배 시 배액제로화가 근권환경 및 수량에 미치는 영향)

  • Chang, Young Ho;Hwang, Yeon Hyeon;An, Chul Geon;Yoon, Hae Suk;An, Jae Uk;Lim, Chae Shin;Shon, Gil Man
    • Journal of Bio-Environment Control
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    • v.21 no.4
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    • pp.348-353
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    • 2012
  • This study was conducted to figure out the possibility of non-drainage in muskmelon (Cucumis melo L.) hydroponics culture. Plants were grown under 3 different levels of drainage, standard (20~40%, SD), minimum (5~10%, MD), and non-drainage (ND). Throughout cultivation periods, constant water content and electrolyte conductivity changes in root zone were observed in SD in the range of 60~70% and 1.52.5dSm1, respectively. ND treatment caused the fluctuation in water content and electrolyte conductivity of root zone and its change ranges were 30~50% in water content and 26dSm1 in electrolyte conductivity, but ND treatment did not decrease fruit quality. Even if fruit fresh weight was slightly lower in ND with 1,863 g, than in SD with 1,990 g, the fruit weight in ND meets standard market size, 1,800~2,000 g. Higher soluble solids content was observed in fruit in ND than in SD and MD. Total amount of drainage per plant was 27,718, 15,769 and 2,346 mL in SD, MD and ND, respectively. SD showed 83.2m3 drainage, 34.5% drainage of irrigation amount whereas required total irrigation amount in ND was very low with 7m3.

Manufacture and Physiological Functionality of Korean Traditional Liquor by Using Purple-fleshed Sweet Potato (자색고구마를 이용한 민속주의 제조 및 생리 기능성)

  • Han, Kyu-Heung;Lee, Ju-Chan;Lee, Ga-Soon;Kim, Jae-Ho;Lee, Jong-Soo
    • Korean Journal of Food Science and Technology
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    • v.34 no.4
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    • pp.673-677
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    • 2002
  • To develop a new traditional liquors using purple-fleshed sweet potato, the condition of alcohol fermentation was investigated by adding different concentrations (575 of cooked purple-fleshed sweet potato into mash and 10% nuruk, and fermenting for 515 days. The maximum amount of ethanol (15.4%) was produced when 20% cooked purple-fleshed sweet potato and 10% nuruk were added into mash and fermented by S. cerevisiae at 25C for 15 days. The acceptability and physiological functionalities of the purple-fleshed sweet potato liquors were also investigated and compared. PSP-10 purple-fleshed sweet potato liquor prepared by adding 10% cooked purple-fleshed sweet potato into mash showed the best acceptability in the sensory evaluation test and color test (pinkred); its fibrinolytic, electron-donating, and tyrosinase inhibitory activities were better than those of other purple-fleshed sweet potato liquors and wine.

Biogas upgrading and Producing the Liquefied Bio-methane by Cryogenic Liquefaction Process (바이오가스 고질화와 초저온액화공정을 통한 액화바이오메탄 생산)

  • Shim, Dongmin;Sung, Hyunje;Park, Seongbum;Kim, Nackjoo;Chang, Homyung;Lee, Jaeyoung;Lee, Youngmin;Lee, Woocheul;Oh, Hwasoo
    • 한국신재생에너지학회:학술대회논문집
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    • 2010.06a
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    • pp.246.1-246.1
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    • 2010
  • 본 연구는 바이오가스의 에너지효율성을 높이기 위한 연구로서 바이오가스 정제공정과 초저온액화공정을 통하여 액화바이오메탄을 생산하는 바이오가스 고질화기술개발 연구이다. 바이오가스 정제공정은 탈황, 제습, 흡착, 압축, CO2/CH4 분리공정으로 구성하고, 초저온액화공정은 열교환기, CO2 제거설비, 질소냉매 공급공정으로 구성하여 혐기성소화조에서 발생하는 바이오가스(CH4 농도: 60~65%, H2S: 1,500~2,500ppm)를 200Nm3/hr의 유량으로 인입시켜 액화바이오메탄을 생산하였다. 연구결과, 탈황공정에서는 가성소다 세정법을 이용하여 1,500~2,500ppm으로 인입되는 H2S를 100ppm 이하로 제거한 후, 흡착법을 이용하여 H2S를 완전히 제거하였다. 바이오가스에 포화된 수분은 냉각제습과 흡착제습공정을 통해 Dew point 7090C까지 제거하여 안정적으로 CO2/CH4 분리공정에 인입시켰다. CO2/CH4 분리공정은 흡착방식을 적용하여 CH4 순도가 95% 이상인 바이오메탄을 생산하였으며, 이때 메탄 회수율은 약 87%이였다. CO2가 분리된 바이오메탄은 초저온액화공정을 이용하여 액화바이오메탄으로 전환시켰다. 이때 초저온액화공정은 Reverse Brayton cycle로 구성하였으며, 냉매로는 질소를 사용하였다. 액화바이오메탄의 생산은 바이오메탄을 등엔트로피과정인 단열팽창을 통하여 155159C의 초저온으로 냉각되는 질소냉매와 열교환기에서 열교환시켜 이루어졌으며 그 생산량은 3.46m3/day(1bar, 161C)이었다.

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Effect of Proteolytic Enzyme on the Unhairing Degree of Pelt (나피의 탈모율에 미치는 단백질 분해 효소의 효과)

  • Lee, Jong-Seok;Seo, Gyo-Taeg;Kim, Young Chai;Moon, Sei-Ki
    • Applied Chemistry for Engineering
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    • v.10 no.5
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    • pp.635-638
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    • 1999
  • The effect of proteolytic enzyme on the unhairing process has been studied. this enzyme significantly changed the physical properties of pelt for leather shoes. A SEM was used to examine physical properties of the pelt. Even though bio-tech treatment using proteolytic enzyme slightly reduced the degree of unhairing compared to chemical treatment. Physical property of the pelt is better and this method is environmentally favorable. H2S gas produced in the chemical treatment was not detected and the value of COD and BOD for waste water after the unhairing process were reduced to 939 mg/L and 5268 mg/L, respectively. We found that a process with 0.4~0.5% proteolytic enzyme for 20 h at 2930C is most suitable for the unhairing process.

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Positive Pilot Research of SBR Process with Flexible Vertical (가변형 간벽을 이용한 SBR 공정의 실증 Pilot 연구)

  • Kim, Man-Soo;Park, Jong-Woon;Park, Chul-Whi
    • Journal of Korean Society of Environmental Engineers
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    • v.27 no.4
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    • pp.438-444
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    • 2005
  • This study is to install the flexible vertical in order to separate not only the time but also the space in the single reactor by opening and closing the flexible vertical, and to intensify the aerobic, anaerobic and anoxic reactions by reducing the time to activate the microorganism for nitrification, denitrification, release of organic phosphate and luxury uptake of ortho-phosphate. Eventually the result of this study obtained each 90.9%, 76.4% for the removal efficiency of total nitrogen and phosphate. Also, content rate of phosphate at excess sludge was higher 2530 for SBR reactor with the flexible verticals than existing SBR process. It would be concluded that SBR reactor with flexible verticals is promising for nitrogen and phosphate removal conditions than conventional SBR processes.