Analysis of the free amino acid content in pollen of nine Asteraceae species of known allergenic activity.
A K AK Mondal 1, S S Parui 2, S S Mandal 2 1 - Department of Botany, Visva-Bharati University, Santiniketan, West Bengal, India 2 - Ann Agric Environ Med 1998; 5 (1): ICID: 4640 Article type: Original article
The study reports the free amino acid composition of the pollen of nine members of the family Asteraceae, i.e. Ageratum conyzoides L., Blumea oxyodonta DC., Eupatorium odoratum L., Gnaphalium indicum L., Mikania scandens Willd., Parthenium hysterophorus L., Spilanthes acmella Murr., Vernonia cinerea (L.) Lees. and Xanthium strumarium L. by thin layer chromatography. The amino acid content was found to vary from 0.5-4.0% of the total dry weight. Fourteen amino acids were identified, among which amino-n-butyric acid, aspartic acid and proline were present in almost all pollen samples. The other major amino acids present in free form included arginine, cystine, glutamic acid, glycine, isoleucine, leucine, methionine, ornithine, tryptophan and tyrosine.