The present work aims to study the biological activity of Anastatica hierochuntica L., against four bacterial strains considered as toxigenic responsible for food-borne infection. The plant was collected from Tindouf region (Far Southwest of Algeria). In this study we performed a phytochemical screening and evaluation of antibacterial activity of three macerates of two vegetative parts (seeds and stems) by two methods (disk and wells diffusion method). The yield of aqueous, methanolic and etheric macerates of the seeds and stems were (5.1; 3.8), (5; 1.4) and (2; 0.95)% respectively. Also, it appears that macerates obtained were rich in bioactive phyto-constituents particularly the seed of the plant. They showed the presence of ten large chemical groups. The antibiotic resistance profile of the bacterial strains tested showed an increased resistance to several families of antibiotics. The evaluation of the antibacterial activity of the extracts showed that methanolic and aqueous macerates of the seed were more active against Gram positive bacteria. The methanolic macerate of the stems was less active. However, other macerates were ineffective. The results obtained show that the plant has an average antibacterial activity and that depends on extract concentration used.
Algerian aride zone is rich with medicinal plant, Salsola vermiculata is one of the most traditional plant remedies in Bechar region. in this work, we tried to test the inhibitory effect on eight storage soft wheat fungi of various extracts of Salsola vermiculata in vitro and vivo by using grain storage by the coating method.The phytochemical screening of plants showed the detection of tannins, saponisides and flavonoids.The results show a remarkable antifungal effect by most of the extracts tested. The decrease in the level of fungi observed in wheat samples demonstrates the effectiveness of grain storage by the coating method.
Objective: The purpose of this work is to study the biological activity of Anastatica hierochuntica L., against nine bacterial strains responsible for women's uro-genital infection (UGI).
Methods:The plant was collected from Tindouf region (far southwest Algeria). In this study, we performed an evaluation of antibacterial activity of three macerates of two vegetative parts (seeds and stems) by two methods (disc and wells diffusion methods), with a description of the antibiotic resistance profile of isolated bacterial strains by antibiogram method.Results: According to the results, the antibiotic resistance profile of the tested bacterial strains showed an increased resistance against several antibiotics families. The evaluation of the antibacterial potential of macerates showed that methanolic and aqueous macerates of the seeds were more active against Gram-positive bacteria compared to Gram-negative bacteria.
Conclusion:The preliminary results of this study allowed us to predict that natural substances in the plant can be considered as an important source to possess compounds with significant antibacterial properties and thus suggest their application in the pharmaceutical industry.
This study focused on the benefices effects of micro-organisms called probiotics that is Lactococcus lactis sbsp cremoris CNRZ 107, and propose different therapeutic possibilities of our situation against a pathogen Salmonella sp.We conducted two tests in vitro and in vivo; where it was noted that treatment in the presence of this lactic strain is effective because it causes a remarkable decrease of the pathogen agent.In the end, the effectiveness of this lactic strain was confirmed by testing for resistance to gastrointestinal conditions (pH, bile salts and digestive enzymes).
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