BOUDJELLAL, Fatima2020-11-232020-11-232020-08https://repository.univ-msila.dz/handle/123456789/20878As part of valuation plant resources Algerian is a family Apiaceae of the most important factions of plant distinct known compounds bio-effective. Seseli praecox L. espèces vegetarian located in the North-East of the peninsula Edough (Annaba).The studies phytochimques previous sup by species that genre Seseli mounted the presence of production the large number of comarine, sesquiterpenes, phénylpropaoïdes, Lignans and polyacétylènes etch that are used in most filed critique. En as studies suggest that he was cited by many induction the treatment of dysuria, of wheezing and the chronic cough. Compare this species of our country with the espèces (found in Sardinia) showed the latter existence of linear furocoumarins (psoralene, phellopterina, imperatorina, bergaptene, marmesina) and polyacetylenes such as falcarinol and falcarindiol were obtained. We found that falcarinol, well-known for its allergenic, cytotoxic, antifungal as well as antibacterial the proallergenic. of our country and known that genre Seseli containing phenolic compounds consist mainly of comarine that have the effectiveness of clear in antioxidants and that was demonstrable in Turkey first time l’ utilization of some in lest the Anatolia (in salads) is correct their ability antioxidant and that was demonstrable in Turkey first time l’ utilization of some in lest the Anatolia (in salads) is correct their ability antioxidants naturals several and also biological activity. Thanks to these studies can say that the Seseli praecox L. contains a the comarine which is the source of antioxidants but keep. This hypothesis relative unless are subject to work laboratory.frApiaceae, Seseli praecox L., Phenolic compounds, Comarine, Antioxidant.Thesis