Results 161 to 170 of about 7,388 (202)
Dual-function <i>Aspergillus sulphureoviridis</i>: antibacterial polyketides against <i>Dickeya solani</i> and elicitation of <i>Bacillus subtilis</i> lipopeptides. [PDF]
Microbiol SpectrWang X +5 more
europepmc +1 more source
A study on the interactions of surfactin with phospholipid vesicles [PDF]
Biochimica Et Biophysica Acta - Biomembranes, 1999 Surfactin, an acidic lipopeptide produced by various strains of Bacillus subtilis, behaves as a very powerful biosurfactant and posses several other interesting biological activities. By means of differential scanning calorimetry and X-ray diffraction the effect of surfactin on the phase transition properties of bilayers composed of different ...
Antonio Ortiz, F Peypoux
exaly +4 more sources
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Biochimie, 1992
Iturin A and surfactin are two lipopeptides extracted from a same strain of Bacillus subtilis. Iturin A possesses antibiotic and antifungal activities and surfactin is a strong surfactant. The presence of surfactin, at a concentration at which, alone, it is inactive, increases to a very large extent the haemolysis percent induced by iturin A.
R Maget-Dana, M Ptak, F Peypoux
exaly +3 more sources
Iturin A and surfactin are two lipopeptides extracted from a same strain of Bacillus subtilis. Iturin A possesses antibiotic and antifungal activities and surfactin is a strong surfactant. The presence of surfactin, at a concentration at which, alone, it is inactive, increases to a very large extent the haemolysis percent induced by iturin A.
R Maget-Dana, M Ptak, F Peypoux
exaly +3 more sources
Molecular mechanism of membrane permeabilization by the peptide antibiotic surfactin [PDF]
Biochimica Et Biophysica Acta - Biomembranes, 2003 Surfactin, an acidic lipopeptide produced by various strains of Bacillus subtilis, behaves as a very powerful biosurfactant and possesses several other interesting biological activities.
Antonio Ortiz +2 more
exaly +2 more sources
Synthesis of Aza-Surfactin and 3-Epi-Aza-Surfactin
HETEROCYCLES, 2012Two synthetic approaches to aza surfactins are reported. In the first our recently developed synthesis of unnatural ß3 amino acids was used to prepare the requisite monomer which was used in solid phase peptide synthesis and followed by macrolactamization of a partially protected precursor. In the second the corresponding ß3 N hydroxyaminoacid was used
Jeffrey W. Bode +3 more
openaire +1 more source
Recent trends in the biochemistry of surfactin
Applied Microbiology and Biotechnology, 1999The name surfactin refers to a bacterial cyclic lipopeptide, primarily renowned for its exceptional surfactant power since it lowers the surface tension of water from 72 mN m-1 to 27 mN m-1 at a concentration as low as 20 microM. Although surfactin was discovered about 30 years ago, there has been a revival of interest in this compound over the past ...
Peypoux, F, Bonmatin, J, Wallach, J.
openaire +3 more sources
Interfacial properties of surfactin
Journal of Colloid and Interface Science, 1992Abstract Surfactin is a lipopeptide produced by various strains of Bacillus subtilis and is a very powerful surfactant. Here we present the first report on the interfacial behavior of surfactin. The adsorption, Γmax, of surfactin at the interface of diluted solutions (5 × 10−8 to 5 × 10−7M) is around 3 × 1018 molecule m−2, a value indicating that ...
Régine Maget-Dana, Marius Ptak
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Surfactin at the Water/Air Interface and in Solution
Langmuir, 2015The lipopeptide surfactin produced by certain strains of Bacillus subtillis is a potent biosurfactant with high amphiphilicity and a strong tendency for self-aggregation. Surfactin possesses a number of valuable biological properties such as antiviral, antibacterial, antifungal, and hemolytic activities.
Iglesias-Fernández, Javier +5 more
openaire +3 more sources
Hydrolysis of surfactin over activated carbon
Bioorganic Chemistry, 2019Surfactin is obtained through biocatalysis by microorganisms. In our biorefinery concept, it is purified on activated carbon (AC) during downstream processing. Besides cyclic surfactin, it is possible to obtain linear surfactin analogues, when AC with specific properties is used.
Hanna, Fałtynowicz +4 more
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Interaction of the Biosurfactant, Surfactin with Betaines in Aqueous Solution
Langmuir, 2013The interactions between the lipopeptide Surfactin and four betaines, N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SDDAB), N-tetradecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (STDAB), N-hexadecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (SHDAB), and N-dodecyl-N,N-dimethyl-2-ammonio-acetate (C12BE) are studied by surface tension and small ...
Fang, Liu +6 more
openaire +2 more sources