Biofilm Formation and Antibacterial Properties of Lactobacillus Isolated from Indigenous Dairy Products
Journal Title: Journal of Food Quality and Hazards Control - Year 2021, Vol 8, Issue 4
Abstract
Background: The health benefits of probiotic bacteria are not unknown to anyone. On the other hand, indigenous dairy sources are a potential source of native probiotics. This study aimed to describe the inhibitory activity of Cell-Free Supernatant (CFS), planktonic cells, and biofilm form of Lactobacillus strains isolated from native dairy sources on food pathogens. Methods: Antibacterial activities of the CFS of lactobacillus strains were assessed by the microplate method and via violet staining, and in planktonic cells, and biofilm forms were performed by the spread plate method. Results: The results showed that despite the large differences in biofilm formation power among the strains, most of them can produce biofilm. Lactobacillus delbrueckii subsp. bulgaricus, Lactobacillus plantarum, Lactobacillus delbrueckii subsp. Lactis, Lactobacillus brevis, and Lactobacillus lactis subsp. lactis formed the strongest biofilm, respectively. Planktonic states reduce the pathogens bacterial by about 1.43 log, but in biofilm forms, decreased Listeria monocytogenes by about 4.8 log compared to the control, and in the case of Pseudomonas aeruginosa, a growth reduction of about 2.8 logs was observed. Conclusion: According to the study, biofilm produced by probiotic strains can be considered a new approach for biological control. Also, indigenous dairy sources can be considered by researchers to extract natural and beneficial probiotics. DOI: 10.18502/jfqhc.8.4.8257
Authors and Affiliations
Z. Rezaei,A. Salari,S. Khanzadi,
Keywords
Related Articles
- EP ID EP699545
- DOI -
- Views 54
- Downloads 1
Microbial Load of Canned Foods Imported Through Ibrahim Khalil International Border, Iraq
Background: Canned foods may be contaminated with microbes and primarily with spore-forming bacteria. This study was designed to give information about microbial load of canned foods imported through Ibrahim Khalil Inter...
Direct Molecular Detection and Phylogenetic Tree Analysis of Gastrointestinal Protozoan Parasites (Giardia lamblia, Entamoeba histolytica, Cryptosporidium parvum) from Diarrhea Infection in Kut City of Iraq: A Short Communication
Background: The intestinal tract of human can be infected by protozoan parasites. In this short communication, the stool samples were collected from patients with diarrhea referred to Kut hospital, Iraq, and then the par...
Evaluation of Fatty Acid and the Composition of Six Different Species of Freshwater Fish in the North of Algeria
Background: Few studies have been published about the quality of freshwater fish in Algeria. This study determined the chemical composition and the fatty acid of six species of freshwater fish cultivated in the North reg...
Comparative Effects of Hibiscus Leaves and Potato Peel Extracts on Characteristics of Fermented Orange Juice
Background: Fermented foods are gaining interest because of their ability to improve health, as well as their good taste, and the desire of many to eat them. This investigation aimed to enhance the chemical and physical...
Mineral Contents of Some Canned, Jarred, and Packaged Foods Commonly Consumed in South-East Nigeria
Background: Minerals are required for human body to function properly. The purpose of this study was to find if these canned, jarred, and packaged foods are a good source of sodium (Na), calcium (Ca), magnesium (Mg), and...