In vitro Screening for Probiotic Potential ofLactobacillus Strains Isolated from Algerian Fermented Products

Journal of Pure and Applied Microbiology

Mourad Kacem¹  Lamia Mermouri²  Aicha Bouhafsoun²  Meriem Kaid-Harche²  Malika A. Dahmani²  Thierry Berges³ 

[1] 1Laboratoire des Productions, Valorisations Végétales et Microbiennes (LP2VM)- Université des Sciences et de la Technologie d'Oran-Mohammed BOUDIAF- (USTO M.B), Faculté SNV, Département de Biotechnologie, BP. 1505 El M'Naouer 31000 Oran, Algérie.3Université d'Oran 1-Ahmed Ben Bella-, Faculté SNV, Département de Biotechnologie, BP. 1524 El M'Naouer 31000 Oran, Algérie.;1Laboratoire des Productions, Valorisations Végétales et Microbiennes (LP2VM)- Université des Sciences et de la Technologie d'Oran-Mohammed BOUDIAF- (USTO M.B), Faculté SNV, Département de Biotechnologie, BP. 1505 El M'Naouer 31000 Oran, Algérie.;2Laboratoire Signalisation & Transports Ioniques Membranaires (STIM) - CNRS ERL7368 Université de Poitiers, Bat. B36 - TSA 51106, 1 rue Georges Bonnet, 86073 Poitiers Cedex 9, France.;

关键词: probiotics;    lactic acid bacteria;    lactobacillus;   

DOI  :  10.22207/JPAM.11.1.13

来源: DOAJ

【 摘 要 】

The objective of this study was to isolate and select Lactobacillus strains with probiotic features for a potential use as starter for the preservation of animal feed. Olives, cow’s and camel’s milk, butter, beer drech and maize silage were used as isolation sources. Molecular identification using 16S rRNA gene sequencing identified four isolates of Lactobacillus plantarum and three of Lactobacillus fermentum. The different screening tests revealed that four strains:Lactobacillus plantarum OV13, Lactobacillus sp. OV15, Lactobacillus fermentum E161 and Lactobacillus sp. E631 are the best probiotic candidates , based on the results oftheir tolerance to acidic pH between 2 and 3.5, to 0.3% bile, to artificial gastric conditions for 18h of incubation , to their antibiotics resistance, their inhibition power on pathogenic bacteria (Pseudomonas sp., Staphylococcus aureus , Escherichia coli and Listeria ivanovii), and finally to their adhesion capacity to intestinal epithelial cells. The selected probiotic strains are considerate as good candidates for further investigation and should be tested, in vivo, to elucidate their potential health benefits on the animal performance as novel probiotic starters.

【 授权许可】

Unknown