Abstract
The research aims to the guarantee detection of some active compounds in plant residues for
crops Wheat (Triticum aestivum L.), Barely (Hordeum Spp. Desf.),Corn (Zea mays L.), Sunflower
(Helianthus annuus L.) using the appropriate chemical reagents, were separated and some estimate
their respective rates, has also been isolated and identified Allelopathic compounds using separation
device High performance liquid chromatography HPLC the results were as follows:
1. The results of initial qualitative statements showed presence most of the secondary metabolic
compounds which includes (glycosides and alkaloids, tannins, flavonoids, terpenes, steroids,
saponins, resins) in the sun flower remnants, while the results of detecting the presence of
steroids in the remnants of barley and Corn did not show, as did not give turbines and steroid
positive and resins when detected in the remnants of wheat, were also measured quantity
(glycosides and alkaloids, tannins, flavonoids) and the results showed that the highest
concentration of (alkaloids, tannins, flavonoids) was in the sun flower residues, while the highest
concentration of Glycosides was in the residues of barley.
2. The results of the analysis devise chromatography High performance liquid HPLC showed
presence 5 phenolic compounds, in residues of wheat (Hydroquinone, P- Hydroxy benzoic acid,
Quercetin, Salicylic acid, Rutin), two compounds in barley residues(Hydroquinone, Caffiec
acid), 5 compounds in Corn residues(Caffiec acid, Hydroquinone, Resorcinol, Rutin, Vanillin),
but the sun flower residues continued(Quercetin, Resorcinol, Rutin, Vanillin).
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Main Subjects