1. D. Berrehal, A. Khalfallah, Z. Kabouche, Flavonoid glycosides from Reseda villosa (Resedaceae), 3ème symposium international sur les plantes aromatiques et médicinales, 29-30 mai (2008), Oujda (Maroc).

2. A. Khalfallah, D. Berrehal, Z. Kabouche, R. Touzani, Flavonoid glycosides from Stephanochilus omphalodes (Asteraceae), 3ème symposium international sur les plantes aromatiques et médicinales, 29-30 mai (2008), Oujda (Maroc).

3. D. Berrehal, A. Khalfallah, S. Betina, J-C Calliste, J-L Duroux, Z. Kabouche, Comparative antioxidant activity of two algerian Reseda species,  The 1st International Symposium on Medicinal Plants, Their Cultivation and Aspects of Uses Ash-Shoubak University College, Al-Balqa’ Applied University, 15 – 16 October (2008), Petra  (Jordan).

4. D. Berrehal, A. Khalfallah, A. Kabouche Z. Kabouche, Flavonoid glycosides from Randonia africana (Resedaceae), 1st international Conference on Materials Science, Nanotechnology and Biotechnology-MNB 09-Future Challenge, 04-06 january (2009), Cairo (Egypt).

 5. D. Berrehal, A. Khalfallah, A. Kabouche Z. Kabouche, G. Topçu, Flavonoid glycosides from Reseda arabica (Resedaceae), Taiba International Chemistry Conference, 23-25 March (2009), Al-Madinah Al-Munawwarah (Kingdom of Saudi Arabia).

6. A. Khalfallah, D. Berrehal, H. Daroui, Z. Kabouche, polyphenolics titration and
identification of secondary metabolites of Stephanochilus omphalodes (Asteraceae), VIIèmes Journées Internationales de Chimie, 7-9 décembre (2009), Constantine (Algérie).

7. D. Berrehal, A. Khalfallah, Z. Kabouche, Separation and identification of secondary metabolites of two  algerian Reseda species, VIIèmes Journées Internationales de Chimie, 7-9 décembre (2009), Constantine (Algérie).

8. A. Khalfallah, D. Berrehal, A. Zeghib, I. Bensalem, B. Marzouk, M. Aouni, Z. Kabouche , Antibacterial activity and flavonoids of Astragalus armatus (Fabaceae),  1ères Journées Scientifiques mixtes LOST (U. Constantine)- LMT (U. Monastir), 24-25 novembre (2010), Constantine.

9. S. Betina-Bencharif, D. Berrehal, A. Khalfallah, J-C Calliste, J-Lc Duroux, Z. Kabouche,
Flavonoids and antioxidant activity of Reseda duriaena, 1ères Journées Scientifiques mixtes LOST (U. Constantine)- LMT (U. Monastir), 24-25 novembre (2010), Constantine.

10. A. Benmerache, D. Berrehal, Z. Kabouche, Dosage des polyphénols et des alcaloides et activité antioxydante de la phase butanolique du Convolvulus supinus (Convolvulaceae),  1ères Journées Scientifiques mixtes LOST (U. Constantine)- LMT (U. Monastir), 24-25 novembre (2010), Constantine.

11. A. Khalfallah, A. Karioti, D. Berrehal, A. Kabouche, M. Lucci, Z. Kabouche, A.R. Bilia,     Flavonoid  riglycosides from Astragalus armatus, 59th International Congress and Annual     Meeting of the  Society for Medicinal Plant Natural Product Research, 4-9 September (2011), Antalya (Turkey).

12. M. Ferhat, Z. Kabouche, Secondary metabolites of  Stachys (Lamiaceae) growing in Algeria, The Mediterranean Congress on Natural Products (MCNP), 9-10 october (2011), Tipaza (Algeria).

13. A .Labed, I. Labed Zouad, A. Khalfallah, A. Kabouche, Z. Semra, B. Ait Kaki, Z. Kabouche.  Antibacterial activity and chemical composition (GC/MS) of essential oil of Ammi visnaga (Apiaceae) from Algeria.VIIIèmes Journées Internationales de Chimie. 11- 12  Décembre  (2012), Constantine (Algeria).

14. A. Benmerache, D. Berrehal, A. Kabouche, Z. Kabouche. Activite antioxydante et flavonoides de L’extrait  butanolique de Convolvulus supinus  (Convolvulaceae). VIIIèmes Journées Internationales de Chimie. 11- 12  Décembre  (2012), Constantine (Algeria).

15. A. Benmerache, D. Berrehal, Z. Kabouche. Antioxidant activity and flavonoids ofthe butanolic extract of Convolvulus fatmensis (Convolvulaceae). International Symposium on “Chemistry for life”. ISCL. 12-14 March (2013), Tlemcen (Algeria).

16. A. Bouratoua, A. Khalfallah, A. Kabouche, Z. Semra, Z. Kabouche.  Flavonoids, Antioxidant and Antibacterial Activities  of Algerian Calotropis procera (Asclepiadaceae).  The 7th Transmediterranean  Colloquium on Heterocyclic Chemisty (TRAMECH-7). 27-30 November (2013), Rabat (Morocco).

17. A. Benmerache, D. Berrehal, A. Khalfallah,  A. Kabouche, Z. Kabouche. Flavonoids of the butanolic extract of  Reseda phyteuma L. The 7th Transmediterranean  Colloquium on Heterocyclic Chemisty (TRAMECH-7). 27-30 November (2013), Rabat (Morocco).

18. A. Benmerache, D. Berrehal, A. Kabouche, Z. Kabouche. Antibacterial activity and secondary metabolites of Convolvulus fatmensis G. Kunze. 5ème Congrès  International  sur  les  Plantes  Aromatiques  et Médicinales  (CIPAM 2014), 17-20 Mars (2014), Zarzis (Tunisie).

19. A. Benmerache, D. Berrehal, A. Kabouche, Z. Kabouche. Antibacterial and antioxidant activities of Tamarix articulate Vahl. (Tamaricaceae). The Second ICONAHE International Conference On Natural Health, 26-28 October (2014), Mostaganem (Algeria).

20. H. Cherchar, D. Berrehal, A. Khalfallah, A. Kabouche, Z. Kabouche. Antibacterial Activity of Phagnalon species growing in Algeria (Asteraceae). The Second ICONAHE International Conference On Natural Health, 26-28 October (2014), Mostaganem (Algeria).

21. M. Ferhat, L. Djjari, Z. Semra, S. Laggoune, Z. Kabouche. Composition and antibacterial activity of the essential oil of Ruta montana from Constantine (Algeria). The Second ICONAHE International Conference On Natural Health, 26-28 October (2014), Mostaganem (Algeria).

22. K.A. Beladjila, A. Khalfallah, D. Berrehal, Z. Kabouche. Total polyphenolic content and antioxydant activity of fruits and almonds of apricots (Prunus armeniaca L.). The Second ICONAHE International Conference On Natural Health, 26-28 October (2014), Mostaganem (Algeria).

23. A. Benmerache, D. Berrehal, A. Kabouche, Z. Kabouche. Secondary metabolites of Tamarix articulata Vahl. (Tamaricaceae). Quatrième Colloque International de Chimie (CiC-4), 25-27 Novembre (2014), Batna (Algeria).

24. I. Labed-Zouad, A. Labed, M. ferhat, M. Ozturk, A. Ismael, T. Aburjai, Z. Semra, S. Nadeem, Z. Kabouche. Antialzheimer, antioxidant and antibacterial activities of Pistachia atlantica Desf.essential oils. IIème Congrès     de Biotechnologies et Valorisation des Bio-ressourcezs (AT-BVBR), 20-23 Mars (2015), Tabarka  (Tunisie).

25. H. Cherchar, D. Berrehal, A. Khalfallah, A. Kabouche, Z. Kabouche. Antioxidant flavonoids from Phagnalon species growing in Algeria (Asteraceae), 6èmes journées scientifiques Internationales sur la valorisation des bioressources, 1- 3 Mai (2015), Monastir (Tunisie).

26. S. Bechkri, A. Khalfallah, D. Berrehal, A. Kabouche, Z. Kabouche. Polyphenols content and antioxidant activity ofazarole fruits (Crataegus azarolus l.).  6èmes journées scientifiques Internationales sur la valorisation des bioressources, 1- 3 Mai (2015), Monastir (Tunisie).

27. K.A. Beladjila, A. Khalfallah, D. Berrehal, Z. Semra, A. Kabouche, Z. Kabouche. Chemical composition and biological activities of fruits watermelon seed oil (Citrullus lanatus). 6èmes journées scientifiques Internationales sur la valorisation des bioressources, 1- 3 Mai (2015), Monastir (Tunisie).

28. K.A. Beladjila, D. Berrehal, A. Khalfallah, Z. Semra, A. Kabouche, Z. Kabouche. Composition and biological activities of fruits, jam, seeds and oil seeds of Phoenix dactylifera L. The 15th International Congress of the International Society for Ethnopharmacology, 5-8, May (2015), Petra (Jordan).

29. K.A. Beladjila, D. Berrehal, A. Khalfallah, Z. Semra, A. Kabouche, Z. Kabouche. Chemical composition and biological activities of the essential oil of Salvia buchananii. 3ème Congrès International de la Biodiversité Végétale, 9-11 Octobre (2015), Marrakech (Maroc).

30. A. Labed, I. Labed-Zouad, M. Ferhat, M. Özturk, A. Kabouche, Z. Kabouche. Phytochemical composition, antioxidant and anticholinesterase activities of Astragalus armatus pods, IVEK 2nd International Convention of and Pharmaceuticals and Pharmacies, 27-29 November      (2015), Istanbul (Turkey).

31. K.A. Beladjila, D. Berrehal, A. Khalfallah, K. Bacheri, A. Kabouche, Z. Kabouche,  Fatty Acid Composition and Antioxidant Activity of Grape Seeds Oil of Vitis Vinifera l. IVEK 2nd International Convention of and Pharmaceuticals and Pharmacies, 27-29 November (2015), Istanbul (Turkey).

32. H. Cherchar, D. Berrehal, A. Khalfallah, A. Kabouche, Z. Kabouche. GC/MS Analysis of the essential oil of Artemisia herba-elba  from Ain El Baida, Algeria. IVEK 2nd International Convention of and Pharmaceuticals and Pharmacies, 27-29 November (2015), Istanbul (Turkey).

33. H. Cherchar, D. Berrehal, A. Khalfallah, A. Kabouche, Z. Kabouche. GC/MS Analysis of the essential oil of Hypericum perforatum from Constantine, Algeria. 3émes Journées Internationales de Chimie Organique de Annaba, 05- 07 Décembre (2015), Annaba   (Algérie).

34. S. Bechkri, A. Khalfallah, D. Berrehal, A. Kabouche, Z. Kabouche. Composition and antioxidant activity of seeds oil of fruits azarole (Crataegus azarolus L.). 3émes Journées Internationales de Chimie Organique de Annaba, 05- 07 Décembre (2015), Annaba (Algérie).

35. K.A. Beladjila, D. Berrehal, A. Khalfallah, K. Bacheri, A. Kabouche, Z. Kabouche, Chemical composition and biological activities of fruits peach almonds oil (Prunus persica L.) of Algeria. 3émes Journées Internationales de Chimie Organique de Annaba,    05-07 Décembre (2015), Annaba (Algérie).