14 research outputs found
Optimization for the Production of Surfactin with a New Synergistic Antifungal Activity
-surfactin and the optimization of its production by the response surface method.O. A production of 134.2 mg/L, which were in agreement with the prediction, was observed in a verification experiment. In comparison to the production of original level (88.6 mg/L), a 1.52-fold increase had been obtained.-surfactin
Diagnosis and Treatment of Penetrating Cardiac Injury One Year after Thoracic Stab Wound
In any patient with a history of penetrating thoracic trauma, cardiac injury must be kept in mind. Here, we describe a 36 years-old female referred to this hospital with severe chest pain and hypotension. After primary evaluation and suggestion of AMI, streptokinase was started for the patient and because of deterioration of vital signs, cardiac surgery consultation was requested. After performing urgent echocardiography, massive pericardial tamponade was detected. Visualization of a knife blade on C.X.R and past medical history of thoracic stab injury led to a diagnosis of delayed cardiac tamponade and urgent sternotomy was performed. The blade that had penetrated the right ventricular chamber was extracted. Six days after operation, patient was discharged without any problem. This case study suggests the importance of high suspicion to cardiac injury in any patient with chest pain and a history of chest trauma
Effect of Instantaneous Controlled Pressure Drop on the glucosinolate content of rapeseed
The efficacy of folk medicines in the management of type 2 diabetes mellitus: results of a randomized controlled trial of Syzygium cumini (L.) Skeels
Perceived professional preparedness of senior nursing students' questionnaire: Development and psychometric evaluation
Is agriculture connected with stunting in Indonesian children living in a rice surplus area? A case study in Demak regency, central Java
Application of Lipopeptide Biosurfactant Isolated from a Halophile: Bacillus tequilensis CH for Inhibition of Biofilm
Enhanced Biosurfactant Production by Bacillus pumilus 2IR in Fed-Batch Fermentation Using 5-L Bioreactor
Electroanalytical detection of heavy metals using metallophthalocyanine and silica-coated iron oxide composites
Please read abstract in the article.The National Research Foundation of South Africa for the Thuthuka research Grant.https://link.springer.com/journal/116962019-12-01hj2018Chemistr
Isolation and characterization of halophilic Archaea able to produce biosurfactants.
Halotolerant microorganisms able to live in saline environments offer a multitude of actual or potential applications in various fields of biotechnology. This is why some strains of Halobacteria from an Algerian culture collection were screened for biosurfactant production in a standard medium using the qualitative drop-collapse test and emulsification activity assay. Five of the Halobacteria strains reduced the growth medium surface tension below 40 mN m(-1), and two of them exhibited high emulsion-stabilizing capacity. Diesel oil-in-water emulsions were stabilized over a broad range of conditions, from pH 2 to 11, with up to 35% sodium chloride or up to 25% ethanol in the aqueous phase. Emulsions were stable to three cycles of freezing and thawing. The components of the biosurfactant were determined; it contained sugar, protein and lipid. The two Halobacteria strains with enhanced biosurfactant producers, designated strain A21 and strain D21, were selected to identify by phenotypic, biochemical characteristics and by partial 16S rRNA gene sequencing. The strains have Mg(2+), and salt growth requirements are always above 15% (w/v) salts with an optimal concentration of 15-25%. Analyses of partial 16S rRNA gene sequences of the two strains suggested that they were halophiles belonging to genera of the family Halobacteriaceae, Halovivax (strain A21) and Haloarcula (strain D21). To our knowledge, this is the first report of biosurfactant production at such a high salt concentration.Journal ArticleResearch Support, Non-U.S. Gov'tinfo:eu-repo/semantics/publishe