M. Nazemi - Persian Gulf and Oman Sea Ecological Research Organization, Iranian Fisheries Research Organization, Bandar Abbas, Iran
A. Motallebi - Iranian Fisheries Research Institute, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran
E. abbasi - Department of Food and Drug Quality Control, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
M. khaledi - Marine Pharmaceutical Science Research Center, Department of Pharmacognosy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, IR Iran. ORCID Id: ۰۰۰۰-۰۰۰۱-۷۸۹۱-۲۲۴۳
M. Zare - The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran

It is believed that the marine animals contain many compounds that could be beneficial for the treatment of many diseases. In this study, the acetone extract of Stichopus hermanni was fractionated by a liquid chromatography and then fractions were assayed for terpenoids. The fraction C۱۸ that received a positive response for terpenoids was purified further and characterized by the liquid chromatography, mass spectral, and Thin-layer chromatography analysis. A terpenoid compound, squalene, was identified as the constituent of the bioactive extract fraction. Antimicrobial activity of C۱۸-۳ was tested against Bacillus subtilis, Bacillus cereus, Pseudomonas aeruginosa, Salmonella typhi, Proteus vulgaris, Escherichia coli, Klebsiella pneumonia, Staphylococcus aureus, and Nocardia brasiliensis pathogens. The lowest MIC and MBC values were observed in the Bacillus cereus (۵۰ µg/mL) and Staphylococcus aureus (۵۰۰ µg/mL), MIC and MFC the fungal pathogen Candida albicans (۴۰۰ and ۲۰۰۰ μg/mL) and was cytotoxic against KB/ C۱۵۲ and HUT-۷۸/C۱۸۵ cells (IC۵۰ ۶.۱ μg/mL and ۶.۲۹ μg/mL). This research suggests S. hermanni can be used as an alternative source for the separation and purification of squalene compound as a medicinal supplement.

Antibacterial activity, Anti-fungal activity, Cytotoxic activity, Sea cucumber, Marine natural products