頁籤選單縮合
題 名 | Isolation and Characterization of an Antibacterial Substance from Citrus Plant |
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作 者 | Ito,Chihiro; Fujiwara,Kazuko; Koizumi,Meisaku; Furukawa,Hiroshi; | 書刊名 | Journal of the Chinese Chemical Society |
卷 期 | 45:1 1998.02[民87.02] |
頁 次 | 頁89-91 |
分類號 | 340 |
關鍵詞 | Citrus; Antibacterial; 3-Hydroxy-5,6,7,8,3',4'-hexamethoxyflavone; Xanthomomas campestris; Phytoalexin; Rutaceae; |
語 文 | 英文(English) |
英文摘要 | Citrus bacterial canker caused by Xanthomomas campestris pv. citri (Hasse 1915)Dye 1978, a gramnegative and rod-shape bacteria, is one of the destructive diseases of Citrus. There is marked diversity in resistance to the disease among Citrus plants. Calamondin, Citrus madurensis Lour. (Shik-kitsu) is one of the highly resistant plants. In resistant plants cbacterial multiplication is restrained by the embedding of electron dense materials in intercellular spaces. This suggests the presence of an antibacterial substance in resistant plants. The third author assayed the 85% ethanol extracts of Citrus leaves infected with bacterial canker for static activities to X. campestris. pv. citri. An active fraction was found in Calamondin. We further purified and characterized its ingredients on the basis of spectrometric analyses. Its structure was found to be identical with 3-hydroxy-5,6,7,8,3',4'-hexamethoxyflavone(1) isolated from citrus natsudaidai Hayata. However, its antibacterial activity is first reported by us. |
本系統中英文摘要資訊取自各篇刊載內容。