• Title/Summary/Keyword: rice-hull

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Development of Substrate and Cultural Method for the Cultivation of Pleurotus sajor-caju (느타리 버섯(Pleurotus sajor-caju) 재배를 위한 기질 및 재배방법의 개발)

  • Hong, B.S.;Kim, S.J.;Song, C.H.;Hwang, S.Y.;Yang, H.C.
    • The Korean Journal of Mycology
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    • v.20 no.4
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    • pp.354-359
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    • 1992
  • The effect of the addition of various vegetable oils on the mycelial growth was studied. Most vegetable oils were proved to be stimulative for the mycelial growth, and the best mycelial growth (12 mg/ml) was obtained with the addition of cotton seed oil. Several agricultural wastes i.e., rice straw, peanut hull, sawdust, rice hull, cocoa hull, coffee waste and beer waste were empolyed as substrates for sporophore production of p. sajor-caju. The biological efficiency(BE) for sporophore productions of rice straw and peanut hull were 36.4% and 32.6%, respectively. The highest yield of sporophore was obtained from the mixture of rice straw (50%) and beer waste (50%)(BE 109.6%) followed by peanut hull (50%) and beer waste (50%)(BE; 74.5%).

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Microclimatic Change and Growth Status by Soil-covering Material in Organic Garlic Cultivation

  • Kim, C.V.;Kim, J.S.;Seo, Y.J.;Heo, M.S.;Park, J.H.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.234-237
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    • 2011
  • This study was carried out to investigate the effect of soil covering materials such as rice bran, rice hull and saw dust on garlic growth through a field experiment in wintertime. Rice bran was the smallest in term of particle size, but it recorded the highest level of bulk density. The missing plant rate after winter season was relatively high, 59.3%, and that of soil covering materials stood at the low level of 10%. Other growth factors recorded the highest level during application of rice bran. In terms of chemical properties of soil-covering materials, rice bran recorded the highest level of 1.84, 2.34 and 0.16% in the content of N, P, and K, respectively. The subsoil temperature was higher by application of rice bran as compared to that of other materials which stood at the lowest temperature ($-9^{\circ}C$).

Major plant nutrient-releasing patterns in the leachates from the soil incorporated rice hull biochar adjusted pH with dry fish powder (산도를 조절한 왕겨 바이오차와 어분 혼합물을 처리한 토양 침출수의 양분용출 패턴)

  • Jae-Lee Choi;DongKeon Lee;MinJeong Kim;JooHee Nam;ChangKi Shim;SeungGil Hong;JoungDu Shin
    • Journal of the Korea Organic Resources Recycling Association
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    • v.31 no.3
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    • pp.55-64
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    • 2023
  • This batch experiment was conducted to investigate the patterns of major plant nutrients in the leachates from the soil that was incorporated with rice hull biochar adjusted pH with dry fish powder utilizing rice hull biochar for loading the soil microorganisms. The rice hull biochar adjusted pH between 6.0 and 7.0, and the mixture ratio of rice hull biochar and dry fish powder was 4:6. The treatments consisted of three; the soil incorporated with rice hull biochar non-adjusted pH with dry fish powder as control (RB + DF), the soil incorporated with rice hull biochar adjusted pH by pyroligneous acid solution and dry fish powder (RBP+DF), and the soil incorporated with rice hull biochar adjusted pH by citric acid solution and dry fish powder (RBC+DF). NH4-N, NO3-N, PO4-P, and K concentrations in the leachates were analyzed during incubation. The accumulated NH4-N and PO4-P concentrations in the leachates from the RBC+DF treatment were the highest during leaching periods. The highest accumulated NO3-N and K concentrations in the leachates from the RBP+DF treatment were observed. It observed that NH4-N and PO4-P were more released in the adjusted citric acid solution, but NO3-N and K were less released than those in the pyroligneous acid solution due to their low absorption capacity. Furthermore, it is necessary to investigate crop growth responses to the soil incorporated with adjusted pH rice hull biochar and dry fish powder for loading soil microorganisms.

Studies on Electrophoretic Pattern and Amino Acids of Buckwheat Protein (메밀 단백질의 전기영동유형 및 아미노산 조성에 관한 연구)

  • 이미숙;손경희
    • Korean journal of food and cookery science
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    • v.8 no.4
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    • pp.379-385
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    • 1992
  • 1. Amino acid compositions were determined by amino acid analyzer. Through the analysis of these samples, it was found that glutamic acid was the most abundant; glycine, aspartic acid, lysine and threonine were rich; and tryptophan and methionine were the limiting amino acid. 2. Albumins, globulins, gliadins and glutelins were extracted from the Kangwon hull, Kangwon rice buckwheat, and wheat. The relative proportions of protein fractions were 52.45 : 10.14 : 16.61 : 20.80% in Kangwon hull buckwheat, 21.10 : 13.80 : 28.40 : 36.70% in Kangwon rice buckwheat and 6.87 : 1.65 : 42.85 : 48.6% in wheat, in the order of albumins, globulins, gliadins and glutelins. 3. Polyacrylamide gel electrophoresis (PAGE) and SDS-polyacrylamide gel electrophoresis (SDS-PAGE) were performed to identify the subfractions of each protein fraction. The electrophoregrams of PAGE showed that the same fractions of both Kangwon hull buckwheat protein and Kangwon rice buckwheat protein had very similar electrophoretic patterns to each other respectively, but there were significant differences in the patterns between buckwheat proteins and wheat proteins.

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Performance and Safety of EDLC of PVdF-PVP Mixed Binder (PVdF-PVP 복합결합제를 이용한 EDLC의 성능과 안정성)

  • 김경민;오호성;정세일;이용욱;강안수
    • Proceedings of the Safety Management and Science Conference
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    • 2001.05a
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    • pp.319-324
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    • 2001
  • High surface area and high pore volume activated carbon was prepared by KOH activation of rice hull. The electrodes were fabricated by compounding the commercial and rice hull activated carbons with PVdF and PVdF-PVP mixed binders without addition of conductivity improver. The electrodes fabricated with rice hull activated carbon and PVdF-PVP mixed binders showed the best performance because the PVP played as a pore-forming agent. The electrode exhibited excellent electrochemical characteristics having 7.9 W.h/kg of energy density, 33.5 F/g of speific capacitance, 0.7 $\Omega$ of ESR and good efficiency of self-discharge compared with that fabricated with commercial activated carbons.

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Antimicrobial Properties of Paper Treated with Acidic Liquid from Carbonized Rice Hull (왕겨초액 처리지의 항균 특성)

  • Min, Choon-Ki;Jo, Joong-Yeon;Shin, Jun-Sub;Lee, Se-Eun
    • Journal of Korea Technical Association of The Pulp and Paper Industry
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    • v.43 no.2
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    • pp.72-76
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    • 2011
  • Antimicrobial activities of the Acidic Liquid originated from Carbonized Rice Hull(ALCRH) and the paper treated with ALCRH were investigated to apply ALCRH to functional paper products as a natural antimicrobial agent. ALCRH showed antimicrobial activity for bacteria and yeast, with higher performance for bacteria than for yeast. Antimicrobial activity was not developed on paper coated with ALCRH by bar coater probably due to the evaporation of antimicrobial compounds of ALCRH from the paper surface with time. Saturation of paper with ALCRH was essential to develop antimicrobial activity on the paper. Dipping paper in ALCRH solution was recommended as one of the effective ways to make antimicrobial paper.

The Effect of Acidic Liquid from Carbonized Rice Hull Treatments to Molded Fiber Packages on the Shelf Life of Egg (왕겨초액을 처리한 계란포장용 펄프몰드의 저장성 유지 효능 분석)

  • Min, Choon-Ki;Jo, Joong-Yeon;Shin, Joon-Sub;Lee, Se-Un;Jeon, Ki-Hong
    • Proceedings of the Korea Technical Association of the Pulp and Paper Industry Conference
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    • 2011.10a
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    • pp.335-343
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    • 2011
  • We examined the effect of the acidic liquid from carbonized rice hull(ALCRH) treatments to molded fiber packages(MFP) on weight, Haugh unit, pH and microbial activity of egg to extend the shelf life in egg packaging. Higher concentration and surface spray treatment of the acidic liquid extended the shelf life of egg. ALCRH treatment to MFP improved the performance of the packaging for egg in terms of decreased weight loss and retarded microorganism growth of eggs during storage.

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Desalinization Effect of Subsurface Drainage System with Rice Hull Packing (왕겨충전에 따른 암거의 제염 효과)

  • Lee, Seung-Heon;An, Yeoul;Yoo, Sun-Ho;Jung, Yeong-Sang
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.43 no.5
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    • pp.63-69
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    • 2001
  • The main purpose of this study is to seek desalinization effect of subsurface drainage system with rice hull packing in Dae-Ho Reclaimed Land. After 4 years installed sub-surface drainage system, distribution of drained water electric conductivity (ECw) was 4.43~12.78 ds/m. The soil profile showed partial development of the soil structure and compaction of subsoils with increased bulk density. The bulk density of the subsoil was 1.42~1.66 g/cm$^3$, which might limit root growth. The soil color changed near the drainage pipe line. Distribution of soil extract solution ECe and SAR as subsurface drainage pipe position and drainage canal distance showed desalinization effect of subsurface drainage system with rice hull packing as widening effective zone of subsurface drainage pipe.

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