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Antimicrobial Activity of Sphingolipids Isolated from the Stems of Cucumber (Cucumis sativus L.)
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China
College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
* Author to whom correspondence should be addressed.
Received: 2 December 2010; in revised form: 10 December 2010 / Accepted: 13 December 2010 / Published: 15 December 2010
Abstract: Three antimicrobial sphingolipids were separated by bioassay-guided isolation from the chloroform fraction of the crude methanol extract of cucumber (Cucumis sativus L.) stems and identified as (2S,3S,4R,10E)-2-[(2'R)-2-hydroxytetra-cosanoylamino]-1,3,4-octadecanetriol-10-ene (1), 1-O-β-D-glucopyranosyl(2S,3S,4R,10E)-2-[(2'R)-2-hydroxy-tetracosanoylamino]-1,3,4-octadecanetriol-10-ene (2) and soya-cerebroside I (3) by their physicochemical properties and spectroscopic analysis. They were evaluated to show antifungal and antibacterial activity on test microorganisms including four fungal and three bacterial species. Among them, compound 1, a relatively low polarity aglycone, exhibited stronger antimicrobial activity than its corresponding glycoside 2. The results indicated that sphingolipids could be the main antimicrobial compounds in the crude methanol extract of cucumber stems.
Keywords: Cucurbitaceae; cucumber (Cucumis sativus L.); sphingolipid; antimicrobial activity; phytopathogenic fungi and bacteria
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Cite This Article
MDPI and ACS Style
Tang, J.; Meng, X.; Liu, H.; Zhao, J.; Zhou, L.; Qiu, M.; Zhang, X.; Yu, Z.; Yang, F. Antimicrobial Activity of Sphingolipids Isolated from the Stems of Cucumber (Cucumis sativus L.). Molecules 2010, 15, 9288-9297.
Tang J, Meng X, Liu H, Zhao J, Zhou L, Qiu M, Zhang X, Yu Z, Yang F. Antimicrobial Activity of Sphingolipids Isolated from the Stems of Cucumber (Cucumis sativus L.). Molecules. 2010; 15(12):9288-9297.
Tang, Jing; Meng, Xiangjie; Liu, Hao; Zhao, Jianglin; Zhou, Ligang; Qiu, Minghua; Zhang, Xianming; Yu, Zhu; Yang, Fuyu. 2010. "Antimicrobial Activity of Sphingolipids Isolated from the Stems of Cucumber (Cucumis sativus L.)." Molecules 15, no. 12: 9288-9297.