WEKO3
アイテム
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The amount of sold cut carnations in the wholesale market ranked second in 1999. But the demand of cut carnations shows a large seasonal change. Thus the longevity of vase life of cut carnations is a very important problem. Flowers are exposed to water stress, caused by increased water loss and limited water uptake, immediately after picking. Water stress has been shown to accelerate senescence and to reduce the longevity of cut flowers. Thus water status in plant tissue is important to the maintenance of the quality of cut flowers. Most postharvest handling of cut carnations depends on chemicals that is the inhibitor of ethylene action in plant tissue. Attempts of postharvest handling by gene recombination are also reported. However it is supposed that those methods have a negative effect on the environment or human life. Thus the establishment of a safer and more effective preservation method is important. The authors have studied a preservation method for cut carnation flowers that uses non-polar gas. The dissolution of xenon gas, a non-polar gas, produces a change in water structure to a clathrate-like structure and yields an increase in the number of hydrogen-bonded water molecules. Since the viscosity of water is closely related to intermolecular potential energy, the increase in hydrogen-bonded water molecules could be interpreted as an increase in water viscosity. This increase in water viscosity could reduce the mobility of intracellular water. Water in this state is calledstructured, andstructured wateris the term used to describe water with a large population of hydrogen-bound water molecules. Structured water is supposed to effect the water stress of cut flowers, because it would be closely related to the intermolecular potential of plants. The objective of this study is to investigate the effect of structured water on the intermolecular water of cut carnations, and to derive the possibility of a new preservation method by using non-polar gas. Chapter 2 Carnation flowers (Dianthus caryophyllus L. cv. Francesco) were obtained from a commercial grower in Chiba prefecture and transported in a dry state within 24h to the University of Tokyo. Upon arrival, the stems was trimmed under water, and the flowers were placed in distilled water. Flowers were kept in a constant temperature room at 293K in darkness for 24h. Samples at the same stage of opening were then chosen and the stems were recut to a length of 10cm. After recutting, samples were placed in a flask with distilled water. Among the non-polar gases that can form structured water, inert gases are the most suitable since they can be expected not to cause biochemical changes in cells because of their low chemical reactivity. Xenon gas was selected to form structured water because it is the most soluble of the inert gases. 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無極性ガスを利用したカーネーション切り花の保存に関する研究
http://hdl.handle.net/20.500.12000/3641
http://hdl.handle.net/20.500.12000/3641472d86c0-e3b7-488e-b287-ce0111bc7d03
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000161915.pdf
|
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| Item type | デフォルトアイテムタイプ（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2008-02-14 | |||||||||
| タイトル | ||||||||||
| タイトル | 無極性ガスを利用したカーネーション切り花の保存に関する研究 | |||||||||
| 言語 | ja | |||||||||
| タイトル | ||||||||||
| タイトル | Studies on the preservation of cut carnations by applying non-polar gas | |||||||||
| 言語 | en | |||||||||
| 作成者 |
松嶋, 卯月
× 松嶋, 卯月
× Matsushima, Uzuki
|
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 主題 | ||||||||||
| 言語 | ja | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | カーネーション | |||||||||
| 主題 | ||||||||||
| 言語 | ja | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | 無極性ガス | |||||||||
| 主題 | ||||||||||
| 言語 | ja | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | 保存 | |||||||||
| 主題 | ||||||||||
| 言語 | ja | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | キセノンガス | |||||||||
| 主題 | ||||||||||
| 言語 | ja | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | 水の構造化 | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Carnation | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | non-polar gas | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | preservation | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | xenon gas | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | structured water | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 本研究は,無極性ガスを利用して切り花の鮮度保持を行うことを目的として行われた。緒論において述べたように,無極性ガスは切り花内に溶解すると,細胞内の水が構造化し,生体反応が抑制され鮮度保持効果が得られると考えられ,オレンジキャンドル種のカーネーション切り花で効果が確認されている。本論ではとくに,水の構造化によって水の動きが変化することに着目し,主として,切り花内の水移動の変化という観点から,無極性ガスによる水の構造化の鮮度保持効果を解明することを目的とした。 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | Chapter 1 Cut carnations are very popular in the Japanese market. The amount of sold cut carnations in the wholesale market ranked second in 1999. But the demand of cut carnations shows a large seasonal change. Thus the longevity of vase life of cut carnations is a very important problem. Flowers are exposed to water stress, caused by increased water loss and limited water uptake, immediately after picking. Water stress has been shown to accelerate senescence and to reduce the longevity of cut flowers. Thus water status in plant tissue is important to the maintenance of the quality of cut flowers. Most postharvest handling of cut carnations depends on chemicals that is the inhibitor of ethylene action in plant tissue. Attempts of postharvest handling by gene recombination are also reported. However it is supposed that those methods have a negative effect on the environment or human life. Thus the establishment of a safer and more effective preservation method is important. The authors have studied a preservation method for cut carnation flowers that uses non-polar gas. The dissolution of xenon gas, a non-polar gas, produces a change in water structure to a clathrate-like structure and yields an increase in the number of hydrogen-bonded water molecules. Since the viscosity of water is closely related to intermolecular potential energy, the increase in hydrogen-bonded water molecules could be interpreted as an increase in water viscosity. This increase in water viscosity could reduce the mobility of intracellular water. Water in this state is calledstructured, andstructured wateris the term used to describe water with a large population of hydrogen-bound water molecules. Structured water is supposed to effect the water stress of cut flowers, because it would be closely related to the intermolecular potential of plants. The objective of this study is to investigate the effect of structured water on the intermolecular water of cut carnations, and to derive the possibility of a new preservation method by using non-polar gas. Chapter 2 Carnation flowers (Dianthus caryophyllus L. cv. Francesco) were obtained from a commercial grower in Chiba prefecture and transported in a dry state within 24h to the University of Tokyo. Upon arrival, the stems was trimmed under water, and the flowers were placed in distilled water. Flowers were kept in a constant temperature room at 293K in darkness for 24h. Samples at the same stage of opening were then chosen and the stems were recut to a length of 10cm. After recutting, samples were placed in a flask with distilled water. Among the non-polar gases that can form structured water, inert gases are the most suitable since they can be expected not to cause biochemical changes in cells because of their low chemical reactivity. Xenon gas was selected to form structured water because it is the most soluble of the inert gases. That is, xenon more readily forms structured water than do the other inert gases. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 紀要論文 | |||||||||
| 出版者 | ||||||||||
| 言語 | ja | |||||||||
| 出版者 | 琉球大学農学部 | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 識別子 | ||||||||||
| 識別子 | http://hdl.handle.net/20.500.12000/3641 | |||||||||
| 識別子タイプ | HDL | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0370-4246 | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN00250548 | |||||||||
| 収録物名 | ||||||||||
| 言語 | ja | |||||||||
| 収録物名 | 琉球大学農学部学術報告 | |||||||||
| 収録物名 | ||||||||||
| 言語 | en | |||||||||
| 収録物名 | The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus | |||||||||
| 書誌情報 |
号 48, p. 1-37 |
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