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eCAM 2007 4(Supplement 1):25-28; doi:10.1093/ecam/nem110
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© 2007 The Author(s).
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Chemical Investigation of Some Capparis Species Growing in Egypt and their Antioxidant Activity

Ahmed R. Hamed, Khaled A. Abdel-Shafeek, Nahla S. Abdel-Azim, Shams I. Ismail and Faiza M. Hammouda

Phytochemistry Department, National Research Centre, El Bohoth Street, 12311, Dokki, Egypt

Capparis cartilaginea and C. deserti growing in Egypt were investigated for their glucosiolates and rutin content. From Capparis cartilaginea four isothiocynates were isolated and identified using GC and EI/MS techniques. These compounds were butyl isothiocyanate (1), 6-methylsulphonylhexyl isothiocyanate (2), 7-methylsulphonylheptyl isothiocyanate (3) and 5-benzylsulphonyl-4-pentenyl isothiocyanate (4). In addition to compounds (1) and (2), two other compounds were isolated and identified from Capparis deserti. These compounds are 3-methylthiopropyl isothiocyanate (5) and [11-(2-butenylthio)6-undecenyl isothiocyanate] (6). Compounds (1), (2), (5) and (6) are reported in this study for the first time from Capparis deserti. The main flavonoid component in the studied species was isolated and identified as rutin by comparing the data with those reported. Also, quantitative evaluation of rutin in the two species was carried out by TLC-densitometric analysis. The antioxidant activity was done using diphenylpicrylhydrazyl (DPPH) radical scavenging method. The butanol fraction from C. cartilaginea and C. deserti showed the highest antioxidant properties.

Keywords: antioxidant activity – Capparis cartilaginea – Capparis deserti – glucosinolates – rutin – TLC-densitometry

For reprints and all correspondence: Prof. Faiza M. Hammouda, Phytochemistry Department, National Research Centre, El Bohoth Street, 12311, Dokki, Egypt. Tel: 002 02 3371 211; Fax: 002 02 3370 931; E-mail: fmhammouda{at}hotmail.com


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