TITLE:
Antiseptic Efficacy of A Soap Made from Biosurfactants Isolated from Bacillus and Lactobacillus against Pathogenic Bacteria
AUTHORS:
Frédéric Yannick Okouakoua, Christian Aimé Kayath, Nicaise Saturnin Mokémiabeka, Varelle Bervanie Ngala Elenga, Digne Nedjea N’goma-Mona, Ndelani Nkalla Lambi, Sandra Paola Elenga Wilson, Christ Dieuveil Bayakissa Malanda, Rodinet Tsana, Junior Patrick Sergy Bissoko1, Moïse Doria Kaya-Ongoto, Duchel Jeanedvi Kinavouidi, Etienne Nguimbi
KEYWORDS:
Antiseptic, Soap, Biosurfactants, Bacillus, Lactobacillus, Disinfection, Pathogens bacteria
JOURNAL NAME:
Advances in Microbiology,
Vol.14 No.1,
January
17,
2024
ABSTRACT: The aim of our study was to use a biosurfactant produced by Bacillus and Lactobacillus isolates as an antiseptic in the formulation of local soap. A total of 60 isolates were characterized by microbiological techniques (30 Bacillus and 30 Lactobacillus) and the ability to produce biosurfactants was demonstrated by a hydrocarbon emulsification index (E24). The emulsification indexes (E24) varied from 9% to 100% for Bacillus and from 33% to 100% for Lactobacillus as well. The antagonistic assay showed that biosurfactants were able to inhibit the formation of biofilms and growth of pathogens such as Escherichia coli, Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus cereus, Salmonella typhirium, Shigella boydii and Proteus mirabilis. The biosurfactant consortium (BioC) from Bacillus consortium and from Lactobacillus was able to inhibit biofilm formation and the pathogens growth. The BioC was stable to alkaline pH and the temperatures stability of Biosurfactant was ranging from 50°C to 90°C. The soap was made by the cold saponification process using one biosurfactant consortium formulated. This soap has a pH of 10 and showed good cleaning power and good foam stability. Similarly, the soap showed good antiseptic power and disinfection power against all pathogens tested. Handwashing is critical to preventing disease transmission. The persistence of pathogens in waste water was evaluated. The BioS produced showed good disinfection power against all pathogens tested. The valor of reduction on the hands and in the waste water was significantly more than compared to the control soaps used. This soap could be used in the prevention, fighting, and treatment of bacterial and viral infections.