Abstract
A total of 15 samples of thalassotherapy products, distributed in Tunisia in their intact and final state of production, was analyzed to determine their microbiological safety status. The result shows the absence of pathogenic bacteria (Staphylococcus aureus, Candida albicans, Salmonella, Pseudomonas aeruginosa and coliforms). The incidence of contamination by Gram-positive Bacilli (mesophelic bacteria, aerobic and anaerobic spore forming bacteria, anaerobic sulphite-reducing bacteria) was found to be higher in products composed by mud and extract of alga. The biochemical and molecular identification of the major contaminant show that Bacilli were the most covered from 75% of the thalassotherapy products. Mineral analysis (organic matter, Fe, Mg, Ca, Na d K, Al, Si and Ti) shows strong composition on Aluminum and Silica. Cytotoxicity study of six thalassotherapy products and three essential oil extracts (Menthol, Clove and Eucalyptus) did not show any cytotoxic effect. Furthermore, antibacterial acitivity of 5 essentila oils, against 30 isolates of the genus Bacillus and 10 reference strains, has been characterized showing an interesting bactericidal potential of the extract of menthol and Eucalyptus.
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