regarding increasing rate of drug resistance among microbial pathogens, a global search to find new antimicrobial agents from natural compounds with fewer side effects has been considered by many researchers worldwide. bioactive compounds with good antimicrobial activity have been isolated from different algae and cyanobacteria. the current study was performed to determine antimicrobial potenti...

Supercritical fluid extraction (SFE) was used in the analysis of bacterial respiratory quinone (RQ), bacterial phospholipid fatty acid (PLFA), and archaeal phospholipid ether lipid (PLEL) from anaerobically digested sludge. Bacterial RQ were determined using ultra performance liquid chromatography (UPLC). Determination of bacterial PLFA and archaeal PLEL was simultaneously performed using gas c...

Oil (healthier lipid combination of olive, linseed and fish oils)-in-water emulsions stabilized with different protein systems (prepared with sodium caseinate (SC), soy protein isolate (SPI), and microbial transglutaminase (MTG)) were used as pork backfat replacers in low-fat frankfurters. Microstructure, lipid oxidation, nitrite content, microbiological changes and biogenic amine formation of ...

the purpose of this study was to evaluate the effects of scrophularia striata water extract on the quality and shelf life of the rainbow trout fillet during superchilled storage. fish samples were treated with 1% and 3% s. striata water extract and then stored at -2°c for 20 days. the samples were analyzed periodically for chemical, microbial and sensory characteristics. results indicated that ...

Sum frequency generation (SFG) vibrational spectroscopy was used to study interactions between solid-supported lipid bilayers mimicking microbial and erythrocyte cellular membranes and synthetic antimicrobial arylamide oligomers named 2, 3, and 4, designed with the facial amphiphilicity common to naturally occurring antimicrobial peptides. The three compounds have the same backbone structure bu...

Microbial lipid production by the oleaginous yeast Rhorosporidium toruloides Y4 was studied using glucose as carbon source, in order to realize igh-density cell culture. Batch cultures demonstrated that there was little inhibitory effect with a substrate concentration of up to 150 g l−1. Flask ed-batch cultures were run for 25 days and reached a dry biomass and cellular lipid content of 151.5 g...

BACKGROUND Microbial lipids can represent a valuable alternative feedstock for biodiesel production in the context of a viable bio-based economy. This production can be driven by cultivating some oleaginous microorganisms on crude-glycerol, a 10% (w/w) by-product produced during the transesterification process from oils into biodiesel. Despite attractive, the perspective is still economically u...

Total lipid extracted from wild-type Trichophyton terrestre CDC-X285 was found to be 2.0 percent of the dry cell weight. The total lipid contained the following phospholipid components identified by silicic acid-impregnated thin-layer and paper chromatography: phosphatidyl inositol, phosphatidyl choline, phosphatidyl serine, and phosphatidic acid. The total lipid extracted from the phenotype T....

The use of volatile fatty acids (VFAs) for microbial lipid accumulation was investigated in flask cultures of Cryptococcus albidus. The optimum culture temperature and pH were 25°C and pH 6.0, respectively, and the highest lipid content (27.8%) was obtained with ammonia chloride as a nitrogen source. The lipid yield coefficient on VFAs was 0.167 g/g of C. albidus with a VFAs (acetic, propionic,...

Microbial fermentation for producing biodiesel from lignocellulosic hydrolysates is receiving increasing attention and attempts have been made to screen an oleaginous Trichosporon sp. with high lipid content and a strong tolerance to lignocellulose hydrolysates. In order to better understand mechanisms related to its lipid accumulation, metabolic flux analysis was performed under 5gL(-1) ammoni...