Enhanced production of bioactive compounds from marine microalgae Tetraselmis tetrathele under salinity and light stresses: A two-stage cultivation strategy.

This study leveraged the salinity and light intensity stresses during the stationary phase for enhancing the pigment contents and antioxidant capacity of Tetraselmis tetrathele. The highest pigments content was obtained in cultures under salinity stress (40 g L) illuminated using fluorescent light. Furthermore, the best inhibitory concentration (IC) for scavenging the 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radicals was found as 79.

The effect of solvents polarity and extraction conditions on the microalgal lipids yield, fatty acids profile, and biodiesel properties.

This study reports the effects of polar (acetone/methanol) and non-polar (chloroform/hexane) solvents on lipid yield, fatty acids methyl esters (FAMEs) composition, and biodiesel properties of microalgae. The lipids yield extracted by hexane and chloroform (100.01 and 94.

Sequential cultivation of microalgae in raw and recycled dairy wastewater: Microalgal growth, wastewater treatment and biochemical composition.

In this study, two cycles of mixotrophic and one cycle of heterotrophic cultivation of Scenedesmus quadricauda (freshwater) and Tetraselmis suecica (marine water) microalgae in dairy wastewater (DWW) were investigated. Dry weights of S. quadricauda and T.

Versatile applications of freshwater and marine water microalgae in dairy wastewater treatment, lipid extraction and tetracycline biosorption.

In this study, freshwater (Scenedesmus quadricauda, Sq) and marine water (Tetraselmis suecica, Ts) microalgae were used for the treatment of dairy wastewater (DWW). Sq and Ts showed the highest biomass productivity as 0.47 and 0.

Metabolic and NH excretion rate of fresh water species, Chondrostoma regium in response to environmental stressors, different scenarios for temperature and pH.

Changes in water temperature and pH levels have substantial adverse effects on aquatic organisms, hence causing physiological constraint on their well-being. To understand the physiological responses of Chondrostoma regium to temperature or pH changes, standard metabolic rate (SMR), maximum metabolic rate (MMR), absolute and factorial aerobic scope (AS&FAS) as well as the specific rate of ammonia excretion (J) were measured at following temperatures: acute low (3.5-4.

Comparative study on adsorption of crude oil and spent engine oil from seawater and freshwater using algal biomass.

Efficiency of a biosorbent prepared from the green macroalga Enteromorpha intestinalis biomass for decontamination of seawater and freshwater polluted by crude oil and engine spent oil was compared. The effect of different experimental conditions including contact time, pH, particle size, initial oil concentration, and biosorbent dose on the oil biosorption was studied in the batch method. The biosorbent was characterized by CHNOS, FTIR, and SEM analysis.