• Title/Summary/Keyword: soaking treatment

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Effects of Seed Disinfectant and Soaking Time on Germination and Disease Occurrence of Adlay, Coix lacryma-jobi L. var. ma-yuen Stapf (율무 종자소독과 침종시간이 발아율 및 병발생에 미치는 영향)

  • Chang, Seog-Won;Jeon, Dae-Hoon;Kim, Hee-Dong;Yi, Eun-Sup;Park, Ki-Jun
    • Korean Journal of Medicinal Crop Science
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    • v.8 no.3
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    • pp.259-265
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    • 2000
  • This study was carried out to investigate the effect of soaking time of seed disinfectant, Fludioxonil on the germination and disease occurrence of adlay (Coix lacryma-jobi L. var. ma-yuen Stapf). The germination rate was higher in the seed disinfectant treatment for 3 days followed by seed soaking for 3 days than that of other treatments under controlled condition of low temperature. The value of two experiments were 90.8%, 96.7%, repectively. And, the time of seed soaking was longer, the more seed rot was proportionly decreased. In the pot and field experiment, germination rates were somewhat low compared to that of petri dish experiment as 88.3%, 84.3%, and occurence of seedling blight showed similar results that of petri dish experiments. There was not significantly different in the yield components among treatments in the field. However, as compared with untreated plot (194kg/10a), unhulled grain yield was increased about 26% on that treatment. Based on these results, it has been thought that improvement of the germonation rate and decrease of disease occurrence of adlay were accompanied with the seed disinfectant during 3 days followed by seed soaking during 3 days before sowing.

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Optimization for the Post-Harvest Induction of trans-Resveratrol by Soaking Treatment in Raw Peanuts (침지조작에 의한 레스베라트롤 증가조건의 최적화)

  • Lee, Seon-Sook;Seo, Sun-Jung;Lee, Boo-Yong;Lee, Hee-Bong;Lee, Junsoo
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.34 no.4
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    • pp.567-571
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    • 2005
  • In this study, the effects of varying the amount of water, soaking time at $25^{\circ}C$ and drying time after soaking at $45^{\circ}C$ on the induction of resveratrol were evaluated to optimize the soaking treatment by response surface methodology (RSM). After response surface regression (RSREG), the second-order polynomial equation was fitted to the experimental data. The analysis of variance showed that the model appeared to be adequate $(R^2=0.9547)$ with no significant lack of fit (p>0.1). From statistical analysis, amount of water and soaking time were found to be significant factors. On the other hand, drying time was not significant. Ridge analysis showed that the optimized parameters were $67.15\%$ for amount of water, 19.58 hr for soaking time, 65.56 hr for drying time. It was confirmed that resveratrol content was increased from $0.1\;{\mu}g/g$ to $4.55\;{\mu}g/g$ under the optimized conditions. In addition, the experimental values at the optimized condition agreed with values predicted by ridge analysis. The analytical method validation parameters such as accuracy, precision, and specificity were calculated to ensure the method's validity.

Effect of Seed Soaking and Foliar Spray of Plant Growth Retardants on Growth and Flowering in Zinnia elegans (백일홍의 생장 및 개화에 미치는 식물생장억제제의 침종 및 경엽살포의 영향)

  • Lee, Seung Woo;Ahn, Sung Eun;Kim, Young Chai
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.574-578
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    • 2001
  • The effects of seed soaking (8 and 24 hours) and foliar spray of plant growth retardants (daminozide, chlormequat and uniconazole) on growth control in zinnia were investigated. For seed soaking of 'Dream Land Rose', the changes in plant height was not affected by seed soaking time (8 and 24 hours), while it was severely suppressed by high concentration of chemicals tested. An application of $125mg{\cdot}L^{-1}$ uniconazole was most effective for plant height suppression. Flowering was promoted by all treatments of chemicals. However, for 'Dream Land Scarlet', plant height control at 24 hours seed soaking showed more effective than 8 hours, and all treatments of chemicals decreased plant height. Uniconazole gave the best result for plant height control. Flowering tended to be hastened by the treatment of chemicals. For foliar spray, plant height was remarkably decreased at high concentration of uniconazole. Flowering was promoted by chlormequat and uniconazole in both 'Dream Land Rose' and 'Dream Land Scarlet'. Also, daminozide decreased number of petals.

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A Comparision of Disinfection Efficacy for RGP Lens by Using Multi-purpose Solution and Cleaner (다목적 용액 및 세척제를 이용한 RGP 렌즈 소독방법의 비교)

  • Park, Mijung;Gwak, Jea-Sook;Park, Sang-Min
    • Journal of Korean Ophthalmic Optics Society
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    • v.12 no.4
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    • pp.37-41
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    • 2007
  • The aim of this study is to establish RGP lens care system using RGP lens multi-purpose solution(MPS) and cleaner. Each RGP lens was incubated in Pseudomonas aeruginosa standard strain, and the numbers of P. aeruginosa colony remaining after treatment by using MPS and/or cleaner including surface activating components were estimated. Soaking only in MPS for 30 min reduced the number of P. aeruginosa up to 50%. 95% of P. aeruginosa was eliminated at RGP lenses soaked in MPS for 4 hr, but P. aeruginosa was not detected at RGP lenses soaked for 6 hr. When only cleaner was used for RGP lens care, 70% of P. aeruginosa was eliminated. This result showed that using cleaner had more effective at removing P. aeruginosa than soaking in MPS for 30 min. When soaking in MPS for 30 min after using cleaner reduced the number of P. aeruginosa up to 36% of that which soaking only in MPS for 30 min. This result suggested that using cleaner could be helpful to improve the disinfection efficacy of short time soaking in MPS.

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Management of Charcoal Rot of Sesame by Seed Soaking in Medicinal Plant Extracts and Hot Water

  • Ahmed, Hoda A.M.;Abdel-Razik, A.A.;Hassan, M.H.A.;Khaled, S.A.
    • The Plant Pathology Journal
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    • v.26 no.4
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    • pp.372-379
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    • 2010
  • Macrophomina phaseolina causing charcoal rot was isolated from sesame seeds (cvs. Giza 32 and Shandawel-3) collected from different localities of Assiut, Sohage and El-Minia Governorates. The fungus was found in the highest frequently in samples collected from Assiut Governorate followed by Sohag and finally EL Minia Governorate. The obtained isolates were different in their virulence on the tested sesame cvs. Also, they differed in their growth nature including colony color and sclerotial production. The color of colonies of the pathogen seem to be correlated with density of sclerotial formation. Aqueous extracts of Majorna, Wild chamomile, Geranium oil and Nees plants were highly toxic to tested isolates of M. phaseolina, in vitro. On the other hand the rest of the tested aqueous extracts had no effect. Under greenhouse conditions in 2005 and 2006 seasons, soaking seeds of sesame before sowing in aqueous extracts of Eucalyptus, Nerium, Ocimum and Roesmary plants decreased the disease incidence. Aqueous extracts of Eucalyptus and Ocimum were the most effective treatment. Dipping sesame seeds in hot water at $60^{\circ}C$ for 5 minutes increased seed germination of Giza 32 and Shandawel-3 cvs. followed by $55^{\circ}C$, $50^{\circ}C$ and $45^{\circ}C$, while $40^{\circ}C$ treatment resulted the lowest seed germination rate. Dipping sesame seeds in hot water at different temperature before planting decreased seed, seedling and charcoal rots. Soaking seeds in hot water at $60^{\circ}C$ increased greatly plant height and decreased seed, seedling rot and charcoal rot followed by $55^{\circ}C$ and $50^{\circ}C$, under greenhouse condition.

Effect of retained austenite on mechanical properties in medium carbon steel (중탄소강의 기계적성질에 미치는 잔류오스테나이트의 영향)

  • Sun, C.G.;Kim, Y.H.;Kim, H.G.
    • Journal of the Korean Society for Heat Treatment
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    • v.8 no.3
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    • pp.229-235
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    • 1995
  • We were studied to the effect of alloying element and retained austenite on a mechnical properties and that used steels were composed three types composition. According to the soaking temperature, a retained austenite was pricipitated in the bainitic ferrite matrix and it was pricipitated to a flake type of about $2{\mu}m$, a mixture of massive and bar type and a flake type of about $1{\mu}m$ size. Through x-ray diffraction analysis, the amount of retained austenite was increased with addition of Si and Ni for equal heat treatment condition and it was best abundanted in the soaking temperature of $855^{\circ}C$. The balance value of strength and elongation were complexly controlled not only a retained austenite formation but also a formation characteristic and shape of the retained austenite and bainite. The balance value of strength and elongation were most satisfactory obtained with "B" and "C" specimens in a firstly heat treated at $855^{\circ}C$ and the best result was that a $2840kg/mm^2.%$ with the heat teratment condition of $855^{\circ}C-400^{\circ}C$ used for "C" specimen.

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Quality Characteristics and Antioxidant Activity of Dioscorea bulbifera, under Various Oligosaccharide Pre-Soaking Condition (당 침지액 농도에 따른 건조 둥근 마의 품질 특성 및 항산화 효과)

  • Jo, Hye Min;Kim, Hee Young;Heo, Yoo Jeong;Song, Da Hye;Kim, Gyeong-Ji;Kim, In-Su;Yoon, Jin-A;Chung, Kang-Hyun;An, Jeong Hee
    • The Korean Journal of Food And Nutrition
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    • v.30 no.6
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    • pp.1176-1183
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    • 2017
  • This study was investigated the quality characteristics and antioxidant of dried Dioscorea bulbifera with various pre-soaking concentrations of oligosaccharide. Dioscorea bulbifera are prepared by additions of 0, 4, 6, 8 and 10% oligosaccharide solution, and dried at $50^{\circ}C$. The effects of pre-soaking percent of Dioscorea bulbifera slices were evaluated by the moisture, soluble solid, pH, titratable acidity, color, browning degree, texture, antioxidant activities and sensory test. According to the percent of pre-soaking oligosaccharide solution was increased, the moisture was increased but soluble solids and titratable acidity were decreased. With respect to the result of colors, Dioscorea bulbifera slices that underwent the 10% pre-soaked process (85.86%) were lighter than control (73.88%). However, the redness and yellowness scores were the lowest than control. The springiness and cohesiveness of texture showed no significant differences among all groups. Gumminess and chewiness of texture results were increased according to per-soaking concentration increase. Also the polyphenol, flavonoid and DPPH (${\alpha},{\alpha}$-diphenyl-${\beta}$-picrylhydrazyl) and ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid)] radical scavenging activities were significantly increased with increasing immersion concentration. The Dioscorea bulbifera slices supplemented with 6% pre-soaking oligosaccharide solution treatment showed the highest total sensory score. The results of our study indicated that when pre-soaking oligosaccharide solution is used to immerse the Dioscorea bulbifera slice, it has browning inhibition and antioxidant effect.

Comparative Study on the Control and Removal of Formaldehyde for the Urea-formaldehyde Resin Bonded Plywood -Adhesive control- (요소수지접착합판(尿素樹脂接着合板)의 유리(遊離)포름알데히드 방산(放散)제거 및 조절방법에 대한 비교연구(比較硏究))

  • Lee, Hwa-Hyoung
    • Journal of the Korean Wood Science and Technology
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    • v.9 no.3
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    • pp.16-23
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    • 1981
  • This study has been carried out to make a comparative study for the adhesive control methods specifically developed for application to formaldehyde. The method for formaldehyde determination used in this report is the improved chromo tropic acid determination. The results are summarized as follows: 1. The soaking treatment in aqueous solution of urea wok the most scavenging effect on the formaldehyde release from a plywood sample glued with a urea formaldehyde adhesive, and other removal treatment such as resorcinol, albumine-, and hardener-treatment gave significant reduction too. 2. In glue shear strength of dry test, 2% of resorcinol treatment and soaking treatment showed the highest strength and all the other treatment met the standard, but in hot water soaking test, 2% of resorcinol treatment gave the best results, on the other hand, adding the hardener showed the lowest strength and failed in meeting the standard. 3. Air dried moisture content of all treated plywood met the standard which calls for 13% or bellow. 4. In this comparative study, we can make a strong combination each other or go into the details of one treatment for the best result through the more study.

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Changes in Quality of Soybean Sprouts Grown by Ozone Water Treatment during Storage (오존수로 재배한 콩나물의 저장 중 품질변화)

  • 김일두;김순동
    • Food Science and Preservation
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    • v.8 no.4
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    • pp.379-384
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    • 2001
  • This study was conducted to investigate the changes in quality of soybean sprouts grown by ozone treatment during storage. Soybean spouts were cultivated under conditions of ozone water watering after soaking in water (W/W), watering after soaking in ozone water (O/W), ozone water watering after soaking in water (W/O) and ozone water watering after soaking in ozone water (O/O). The ozone concentration in soaking of soybean and watering of soybean sprouts was 0.3 ppm, respectively. No significant difference in shelf-life between W/W soybean sprouts and ozone treated samples showed. But shelf-life of soybean sprouts stored in 0.01 ㎜ polyethylene film at 10$\^{C}$ and 20$\^{C}$ prolonged 4 and 2 days, respectively. The slow growth of total microbe in the ozone treated samples stored at 10$\^{C}$ was observed, whereas that of products at 20$\^{C}$ showed rapid growth during storage. However, no great difference occurred among samples in the changes of moisture, vitamin C and chlorophyll content during storage. Higher hardness of soybean spouts stored at 10$\^{C}$ and 20$\^{C}$ was kept in the O/W and W/O products. Color, flavor and overall acceptability evaluated by sensory teat during storage had higher scores in O/W products as compared to the other samples.

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Printing of Nano-silver Inks with Ink-jet Technology and Surface Treatment (잉크젯 기술자 표면처리 기술을 이용한 나노 실버 잉크 프린팅)

  • Shin, Kwon-Yong;Lee, Sang-Ho;Kim, Myong-Ki;Kang, Heui-Seok;Hwang, Jun-Young;Park, Moon-Soo;Kang, Kyung-Tae
    • Proceedings of the KIEE Conference
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    • 2007.11a
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    • pp.104-105
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    • 2007
  • In this study, characteristics of silver ink-jet printing were investigated under various substrate treatments such as substrate heating, hydrophobic coating, and ultraviolet(UV)/ozone soaking. Fluorocarbon(FC) film was spin-coated on the polyimide (PI) film substrate to obtain a hydrophobic surface. Although hydrophobicity of the FC film could reduce the diameter of the printed droplets, the singlet images printed on the FC film surface showed irregularities in the pattern size and the position of the printed droplet along with droplet merging phenomenon. The proposed UV/ozone soaking of the FC film improved the uniformity of the pattern size and the droplet position after printing and substrate heating was very effective way in preventing droplet merging. By heating of the substrate after UV/ozone soaking of the coated FC film, silver conductive lines of 78-116 ${\mu}m$ line were successfully printed at low substrate temperatures of $40^{\circ}C$.

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