Two cold-tolerant microalgae, Chlorella vulgaris and Scenedesmus sp., were grown at 22 5 °C. At the lower temperature, microalgae showed substantial biochemical morphological changes. The soluble sugar profile in response to low-temperature cultivation was very different two strains. C. increased both sucrose raffinose family oligosaccharides (RFOs) content °C while sp. drastically reduced cont...

Saturated carbonyl compounds, such as aldehydes and esters, are basic building blocks for the synthesis of organic molecules and materials. Reactions with carbonyl compounds as substrates primarily occur at the carbonyl carbon atom (as an electrophilic center) or the a-carbon atom (as a prenucleophile). In organocatalysis, several powerful approaches have been developed for the asymmetric funct...

Objectives: The objective of this research was to investigate the chemical composition and antibacterial activities of the fatty acids and essential oil from various parts of Ligularia persica Boiss (L. persica) growing wild in north of Iran. Materials and Methods: Essential oils were extracted by using Clevenger-type apparatus. Antibacterial activity was tested on two Gram-positive and two Gra...

A laboratory investigation on the biotransformation of 8:2 fluorotelomer stearate monoester (8:2 FTS) in aerobic soils was conducted by monitoring the loss of 8:2 FTS, production of 8:2 fluorotelomer alcohol (8:2 FTOH) and stearic acid, which would be released by cleavage of the ester linkage, and subsequent degradation products from FTOH for 80 d. Soil microcosms were extracted with ethyl acet...

Abstract Methyl ester biodiesel was produced from Moringa Oleifera oil and Jatropha Curcas with the sole aim of assessing feasibility feedstocks as viable sources in Botswana. Oil extraction transesterification were carried out under identical experimental conditions for both biomass. extracted seeds through a soxhlet method using solvent, n-hexane. The then trans-esterified at 60 °C methanol/o...