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

TLC phytochemical screening in some Nigerian Loranthaceae

O. M. Wahab1, A. E. Ayodele1* and J. O. Moody2
1Department of Botany and Microbiology, University of Ibadan, Ibadan, Oyo State, Nigeria. 2Department of Pharmacognosy, University of Ibadan, Ibadan, Oyo State, Nigeria.
Email: [email protected]

  •  Accepted: 08 June 2010
  •  Published: 31 July 2010

Abstract

The  phytochemical screening of specimens of the family Loranthaceae collected from the field  was carried out with a view to ascertaining chemical constituents present and determining their importance in the taxonomic delimitation of the taxa. Thirty field collections from various localities were screened for secondary metabolites such as alkaloids, anthraquinones, terpenoids and ketones using thin layer chromatography (TLC). Most of the samples tested slightly positive for alkaloids, anthraquinone-related compounds, terpenoids and terpenoid-related compounds but ketonic compounds were of rare occurrence in all the samples. The chemical profile was useful in separating the collections of Phragmanthera from the other two genera while the collections of Globimetula were found embedded in Tapinanthus. The secondary metabolites obtained however showed the relative affinity of the Nigerian species of Tapinanthus. It is concluded that chemical characters may only be used as supporting evidence in the identification and delimitation of the taxa.

 

Key words: Loranthaceae, mistletoes, Nigeria, taxonomy, phytochemistry.