Journal of
Pharmacognosy and Phytotherapy

  • Abbreviation: J. Pharmacognosy Phytother.
  • Language: English
  • ISSN: 2141-2502
  • DOI: 10.5897/JPP
  • Start Year: 2009
  • Published Articles: 223

Full Length Research Paper

Physico-chemical analysis of Ximenia americana L. seed oil and structure elucidation of some chemical constituents of its seed oil and fruit pulp

A. E. M. Saeed1* and R. S. M. Bashier2
1Department of  Chemistry, College of Science, Sudan University for Science and Technology, P. O. Box 407, Khartoum, Sudan. 2Department of  Chemistry, College of Science, Zalingei University, Sudan.
Email: [email protected]

  •  Accepted: 09 June 2010
  •  Published: 30 June 2010

Abstract

In this study, fixed oil was extracted from the seeds of Ximenia americana. The study covered the percentage yield, physical and chemical properties of the extracted oil. The highest oil obtained was 51% w/v. The physical properties of the oil were found to be reactive index (1.477), density (0.9376 g/ml), boiling point (157°C) and viscosity  42 at 70°C and 227.58 at 25°C. The chemical properties of the oil were : iodine value (47.59), acid value  (0.2805), peroxide value (30), saponification value (11.43), ester value (9.82), and the ratio value (35.009). The molecular weight of the major component of the oil was 604. The major component of the oil (C40H76O3) was identified as methyl-14,14- dimethyl – 18-hydroxy heptatriacont-27,35-dienoate[CH3OCO(CH2)12C(CH3)2(CH2)3CHOH(CH2)8CH=CH(CH2)6CH=CHCH3]. A compound was isolated from the fruit pulp, and purified using column and thin layer chromatography, with a molecular weight of 578, molecular formula (C35H62O6) and was identified as dimethyl - 5- methyl – 28,29 - dihydroxy dotriacont-3,14,26 - triendioate. These compounds were not reported before from X. americana seeds or fruit pulp

[CH3OCOCH2CH=CHCH(CH3(CH2)8CH=CH(CH2)10CH=CH(CHOH)2(CH2)2COOCH3].

 

 Key words: Ximenia americana, seeds, oil, fruit pulp.