Palm fatty acid distillate (PFAD) and methyl ester (FAME) are used by P. aeruginosa PAO1 to produce rhamnolipid biosurfactant. The process of fermentation producing biosurfactant was structured in a 2 L bioreactor using 2% PFAD FAME as carbon sources minimal medium with nitrogen concentration 1 g L?1. Mass spectrometry results show the crude produced predominantly monorhamnolipid (Rha-C10-C10) ...

Biosurfactants have been shown to a variety of other agricultural applications. Antimicrobial activity is desirable property in biosurfactants. Several biosurfactants produced from bacteria antibacterial against plant diseases, making them promising biocontrol molecule for ensuring sustainability the long run. The purpose this research was characterize biosurfactant at different carbon source b...

Sophorolipids (SLs) are glycolipids type of biosurfactants and are produced by the yeast Candida bombicola. Medium containing mixed hydrophilic substrate (deproteinized whey and glucose), yeast extract and oleic acid was investigated in this study for SLs production from the yeast. The produced SL was also purified and characterized in the study. At an optimum combination of the medium constitu...

In vitro Cytotoxic Effect of Biosurfactant Extracted from Bifidobacterium spp. on MCF-7 and WRL68 Cell Lines

BACKGROUND Biosurfactants are surface-active compounds produced by some microorganisms. OBJECTIVES In this study, we collected surface skin samples from breast of poultry (chicken, turkey, and, quail) and screened for biosurfactant-producing bacteria. We also determined the genera of cultured strains. MATERIALS AND METHODS 33 hemolytic bacterial strains (15, 11, and 7 isolates from chicken,...

Recent investigations of extreme environments have revealed numerous bioactive natural products. However, biosurfactant-producing strains from deep sea extreme environment are largely unknown. Here, we show that Dietzia maris As-13-3 isolated from deep sea hydrothermal field could produce di-rhamnolipid as biosurfactant. The critical micelle concentration (CMC) of the purified di-rhamnolipid wa...

Fifteen lactic-acid bacteria, isolated from fresh fruits and vegetables produced biosurfactants in the mid-exponential phase (5 hours). Twelve isolates were genotipically identified to belong to the genus Lactobacillus. Among these, the Lactobacillus sp. CV8LAC, isolated from cabbage, showed the largest oil spreading halo. Extracted CV8LAC biosurfactant reduced the water surface tension from 70...

Production of a rhamnolipid biosurfactant by cells of Pseudomonas aeruginosa strain BN10 immobilized into poly(ethylene oxide) (PEO) and polyacrylamide (PAAm) cryogels was investigated under semicontinuous shake flask conditions and compared to biosurfactant secretion by free cells. The biosurfactant synthesis was followed over 9 cycles of operation of the immobilized system, each cycle compris...

Soummam river sediments were used to isolate a biosurfactant-producing and petroleum-degrading bacterium. The strain was identified as Alcaligenes aquatilis YGD 2906 using phenotypic characterization 16S ribosomal RNA sequencing. culture supernatant of the isolated showed no haemolytic activity had an oiled displacement 23.66 ± 0.57 mm Emulsification index (E24) 68.5% 0.5%. biosurfactant produc...