• Title/Summary/Keyword: Stalk

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Composition of Leaf Surface Lipid in Flue-cured Tobacco and Their Changes during Flue-curing (황색종 잎담배의 엽면지질 성분 조성 및 건조중 변화)

  • 지상운;김도연;이문용;김영희;신승구
    • Journal of the Korean Society of Tobacco Science
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    • v.19 no.1
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    • pp.57-63
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    • 1997
  • The composition of leaf surface lipid in Flue-cured tobacco and their changes during curing was investigated. The flue-cured variety, Nicotiana tabacum cv. NC 82 was cultivated at Eumsung experiment station in 1996. The samples of riced leaves with different stalk Position(Lugs, Cutter, Leaf and Tips) and different curing stage at half yellowing(24hr), yellowing(48 hr) , color axing(72 hr), midrib drying(96 hr) and cured(120 hr) were collected for analysis of leaf surface lipid. $\alpha$ - and $\beta$ - 4, 8, 13-Duvatriene-1, 3-diol($\alpha$, $\beta$-DVT) were major components in leaf surface lipid extracted with methylene chloride and sugar ester was detected slightly DVT content was increased with ascending stalk position, but increasing trend of total hydrocarbon was not observed. While DVT was decreased throughout curing of tobacco leaves, hydrocarbon content did not show significant change during curing process. Twenty-two duvane compounds were detected by capillary GC in duvane fraction isolated from leaf surface lipid and of which 11 compounds were identified by GC-MS. These compounds were decreased with curing in all stalk position.

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Effect of MH and FA on the Change of Several Metabolites in Flue - cured Tobacco(Nicotiana tabacum L.) II. Nucleic Acid and Protein Contents (MH 및 FA가 황색종 잎담배의 몇가지 대사산물 변화에 미치는 영향 II. 핵산과 단백질함량의 변화)

  • 한상빈;육창수;조성진
    • Journal of the Korean Society of Tobacco Science
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    • v.15 no.2
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    • pp.152-160
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    • 1993
  • Using a flue- cured tobacco variety, KF 109, effect of growth regulators(fatty alcohol and C- MH) on the change of protein, DNA, and RNA were investigated. Generally, inhibition of DNA synthesis was observed soon after become notably reduced when checked on 14 days after the treatment. Fatty alcohol treatment appeared to alleviate the inhibition of DNA synthesis caused by the C - MH treatment. It was also observed that in the tips DNA content increased slightly at the early stage after the C - MH treatment but evident reduction of it was resulted from 7th day after the treatment. RNA content in cutters and tips was increased initially but variable transcription inhibitory activities - not so obvious as was observed in DNA synthesis - according to leaf positions were shown thereafter. Ripening of leaves probably due to senescence was advanced by the treatment of the growth regulators. DNA content in root was relatively higher in plants treated with the growth regulators while it was clearly decreased in stalk, However, RNA contents in tissue of stalk and root was not different with that of foliage. Increase of protein content in foliage as well as in stalk was evident 14 days after dual treatment of fatty alcohol and C - MH.

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Changes of Nitrogeneous Compounds Depending upon the Curing Methods in Burley Tobacco (버어리종 건조방법에 따른 질소화합물의 변화)

  • 백순옥;한상빈;배성국
    • Journal of the Korean Society of Tobacco Science
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    • v.25 no.1
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    • pp.27-33
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    • 2003
  • This study was conducted to determine the changes of nitrogen compounds in lamina and midrib during the curing process with the different curing methods, such as priming and stalk-cut curing. After KB 108 burley tobacco was cultivated by the different fetilization levels such as standard and 20% higher, only the tips and leaf were harvested. Though the contents of total alkaloid and total nitrogen were similar in lamina, midrib showed a very low contents of those components by the different curing method and fertilization levels. The content of nitrate-nitrogen in lamina increased during a middle of curing process, and then these compound was decreased during an end of curing process by stalk-cut curing method. Nitrate-nitrogen contents in the lamina by the priming curing showed a high level caused by rapid drying process during an end of curing process. That component in midrib was 5-6 times higher than that of lamina. The contents of ammonia-nitrogen in the lamina and midrib were increased during a curing process. Though those amount in tips showed a similar by a different fetilization and curing method, midrib of stalk-cut curing showed a slow increasing during a curing process.

Varietal Difference of Leaf Breakdown in Field of Flue-Cured Tobacco (Nicotiana tabacum L.) (황색종 연초(Nicotiana tabacum L.)에서 엽탈락의 품종간 차이)

  • 조수헌
    • Journal of the Korean Society of Tobacco Science
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    • v.10 no.2
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    • pp.93-98
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    • 1988
  • This study was conducted to obtain basic information for varietal difference of leaf breakdown in field of flue-cured tobacco at Taegu Experiment Station, Korea Ginseng & Tobacco Research Institute in 1987. The experiment was designed in randomized block with 3 replications, data ware analysed as Split split-plot design. Main plots were varieties, sub-plots were leaf positions, 4, 5 and 6th from bottom, and each sub-plot was divided into 3 parts with distance of midrib, 7 10 and 13em from stalk. Four varieties, NC 95, NC 2326, NC 82 and BY 4 were transplanted in 15 April, and measured the weight of leaf breakdown by artificially weighted in 5 June. The results obtained are as follows : 1. Weights of leaf breakdown according to leaf position, NC 95 were lower as 358-5799 than those of other varieties as 555-597g, were not significantly different regardless of varieties. 2. Weights of leaf breakdown in relation to distance of midrib from stack, NC 95 were lower as 309-419g than those of other varieties as 472-710g. 3. Weights of leaf breakdown were significantly different according to distance of midrib from stalk, and not significantly different according to leaf position under the same distance of midrib from stalk regardless of varieties.

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Growth and Flowering Characteristics, and Ornamental Evaluation of Curcuma (Curcuma속 식물의 생육 및 개화 특성과 관상적 가치 평가)

  • Hwang, Sun Ae;Lee, Poong Ok;Choi, Mok PiI;Lee, Jong Suk
    • FLOWER RESEARCH JOURNAL
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    • v.16 no.4
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    • pp.275-283
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    • 2008
  • Eighteen accessions of Curcuma germplasm were evaluated for use as cut flowers or potted plants. Curcuma species or cultivars that have colorful showy bracts and long inflorescence longevity can be produced as cut flowers or potted plants. For cut flower uses, following cultivars were recommended: C. alismatifolia 'Chiangmai Pink', 'Tropic Snow', 'Chiangmai Dark Pink', 'Lady Di', and 'Siam Violet Lily' with long flower stalk length (40~55 cm) and long vase life. For potted plant production, C. alismatifolia 'Cambodian Scarlet', 'Cambodian Red', C. sparganifolia 'Siam ruby', and C. thorelii 'Chiangmai Snow' producing short flower stalk length (about 10~20 cm) were evaluated.

Effects of a Health Drink Containing the Extract of the Hovenia Dulcis Fruit Stalk and Theracurmin, on Ethanol-Induced Hangover

  • Kang, Nam E;Oh, Yoon Sin;Yeo, Hee Kyung;Baik, Hyun Wook;Jang, Se-Eun
    • Journal of the Korean Society of Food Culture
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    • v.36 no.6
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    • pp.563-570
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    • 2021
  • The fruit stalk of Hovenia dulcis (H.dulcis) is traditionally used to relieve hangovers in Korea. Theracurmin is a highly absorbable curcumin preparation which increases the bioavailability of curcumin. Curcumin is known for its antioxidant and anti-inflammatory effects. However, the role of this combination in lowering alcohol levels in the body, thereby alleviating the severity of alcohol-induced hangover has not been investigated. Therefore, we conducted a study to investigate the eliminatory effects of a health drink containing the extract of the H. dulcis fruit stalk and theracurmin (theracurmin drink) on ethanol-induced hangover in rats. The theracurmin drink delivered orally to rats 30 mins before the administration of 40% ethanol (5 g/kg body weight), lowered the concentration of ethanol and acetaldehyde in the blood samples collected 1, 3, and 5 h after ethanol administration. Furthermore, the theracurmin drink increased the activities of alcohol dehydrogenase and aldehyde dehydrogenase enzymes. The effectiveness of the theracurmin drink was thus superior to that of other health drink products, suggesting that its consumption may alleviate or prevent an alcohol-induced hangover.

Stalk Rot Caused by Fusarium thapsinum on Sorghum at Organic Paddy-upland Rotation System in Korea (유기농 답전윤환지 Fusarium thapsinum에 의한 수수 줄기썩음병)

  • Kim, Byung-Ryun;Han, Kwang-Seop;Hahm, Soo-Sang;Kang, Young-Sik;Park, In-Hee;Yoon, Seong Tak
    • Research in Plant Disease
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    • v.22 no.4
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    • pp.293-296
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    • 2016
  • In late June 2016, stalk rot symptoms were observed on five vatieties of sorghum (Sorghum bicolar) at organic paddy-upland rotation system in Anseong city, Korea. The initial symptom on stalk surfaces was red color with a dark red spot lesion. A fungus was isolated from the initial lesion, and cultured on potato dextrose agar. Size of microconidia mostly extend to $5-19{\times}2-{\mu}m$ in culture, with 0-1 septa and macroconidia extend to $29-52{\times}3-4{\mu}m$ with 4-6 septa. Pathogenicity was investigated using conidial suspension spray to seedling of sorghum. After 3 days of inoculation, the dark red lesion was produced on stalks. On the basis of mycological characteristics, pathogenicity, and internal transcribed spacer (ITS) rDNA sequence analysis, this fungus was identified as Fusarium thapsinum. This is the first report of stalk rot on sorghum caused by F. thapsinum in Korea.

Effects of Adding Crushed Fresh Sweet Potatoes on the Quality of Rice Straw, Clover and Sweet Potato Stalk Silages (볏짚, 클로버 및 고구마덩굴 Silage 조제(調製)를 위한 생고구마 첨가(添加)의 효과(效果))

  • Kim, Jong Woo;Kim, Yong Kook
    • Korean Journal of Agricultural Science
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    • v.11 no.1
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    • pp.114-119
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    • 1984
  • In order to improve the quality of silages made of rice straw, clover and sweet potato stalk, crushed fresh sweet potatoes(CFSP) were added at various levels to each silage. When the fermentation was completed, the chemical composition, pH and main organic acid contents of each silage were analized. The results obtained were summarized. 1. The moisture content of sweet potato stalk silage was highest among all silages tested. The clover silage showed the highest value in crude protein content. On the other hand, the rice straw silages were high in NFE and crude fiber contents. When the level of CFSP increased, the NFE contents tended to increase and crude fiber decrease. 2. The content of total organic was highest in clover silage. However, the percentage of lactic acid in total acid content was highest in sweet potato silage. The percentage of lactic ac id in total acid content was increased in paralled with the levels of CFSP. 3. The sweet potato stalk silages showed the lowest pH value (4.10-4.20). The highest pH values were 4.75-5.22 in rice straw silage. The addition of CFSP tended to lower the pH. 4. It appears the quality of clover and rice straw silages can be imp roved by adding CFSP at 5 and 10% levels, respectively, on fresh weight basis. The addition of CFSP to the sweet potato stalk silage, however, was not effective in this experiment.

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A Study on Folkcraft Processing Art and Designing Development-Especially Centerin garound Plant-Stalk Works (한국민속공예제품 가공기술 및 디자인 개발에 관한 제고방식-초경공예제품을 중심으로)

  • 남상교
    • Archives of design research
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    • v.2 no.1
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    • pp.13-41
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    • 1989
  • The raw materials for plant-stalk-folkcrafts are cultivated in the whole country. Most Korean farmers, to increase their income, have produced mats and containers with various plants as a side line from very long ago. At first, they began from the instruments of life and then made folkart and at last get to manu\ulcornerfacturing of industrial folk craft. The folkcrafts, made of plant-stalk, which could nor conform to changing society, are partly declined and partly handed down as the traditions. The social change today, however, makes living conditions more speedy and multisided, accordingly the characteristics of demand also become in\ulcornerdividual and various. While the demend is various like this, suppliers cannot answer demendants' requirements, and consequently, the demand and profit cannot be increased. According to this, the purpose of this study is set up to give an answer to the situation that is at the traditional standstill, through an examination of the motives. I. The crafts of plant-stalk are made only in an organized relationship between agriculture, industry and art as it is compounded art of gathering raw material, manufacturing, producing, improv\ulcornering design and production conditions. It may be possible that a farmer gathers material and weaves it manually but in others, it is im\ulcornerpossible to refine, bleach and dye because the process requires a professional industrial treatment. It is impossible to make art works to a farmer as every farner does not always have aesthetic sense. Though a farmer or producer has these all abilities, it is not desirable to him from economical view. 2. The development or improvement is essential in many sides but the most important thing seems to he in design. According to reports, it is, howevt!r, fact that the crafts improved in design of existing works have more expanded the sales than newly developed works. Therefore, ir appears advisable to improve designs of existing things positively as they have merit of occupying a position already, but on the other hand, new crafts have to be also developed and the producer should grasp the proper time. 3. Building up an industrial complex to improve design with collecting the producing districts for this works scattered allover the country is very desirable for speedy communication, intensive educa\ulcorner tion or training, and effective guidance. 4. In producing for export abroad, before everything, must know the life environment, custom! and manners, main thought of the country, and then produce according to these. S. The crafts of plant-stalk are the fIrst industry in present but in the futher it should change intc second or third industry. 6. A synethetic organization for supporting side line should be established for effectiveness, and experts have to be secured and also the educational-industrial complex and activation of study should be preceded.

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Antibacterial and Antioxidant Activities of Solvent Extracts from Different Parts of Hagocho (Prunella vulgaris) (하고초 부위별 용매추출물의 항균 및 항산화 활성)

  • Seo, Jong-Kwon;Kang, Min-Jung;Shin, Jung-Hye;Lee, Soo-Jung;Jeong, Hey-Gwang;Sung, Nak-Ju;Chung, Young-Chul
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.39 no.10
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    • pp.1425-1432
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    • 2010
  • This study was designed to investigate the effects of antioxidant and antibacterial activities of water, ethanol and methanol extracts from root, stem and flower stalk of Hagocho (Prunella vulgaris). The solvent extract yields from root were higher than those from stem and flower stalk, and water extract showed the highest extraction yield against ethanol and methanol extracts. The contents of total phenolic and flavonoid in ethanol extract were significantly higher in stem extract compared with those of root and flower stalk. In the case of water and methanol extracts, however, the contents were the highest in flower stalk. The electron donating ability and reducing power in all test groups were significantly increased in a dose-dependent manner, and antioxidant activities were the highest in methanol extract. In extracts from different parts of Hagocho, the antioxidant activity was the highest in flower stalk followed by stem and root. ABTS radical scavenging ability of water and methanol extracts was above 50% at $100\;{\mu}g/mL$ concentration. Antibacterial activities did not show significant differences depending on parts of Hagocho. However, antibacterial activity of ethanol extract was higher than those of other extracts.