Application of hydrogen peroxide presoaking prior to ammonia fiber expansion pretreatment of energy crops

Fast Isolation of Flavonoids from the Endemic Species Nolana ramosissima I.M. Johnst and Its Endothelium-Independent Relaxation Effect in Rat Aorta

“…Five major flavones were quickly isolated by HSCCC from a methanol extract of the endemic species N. ramosissima, and four of them showed relaxation activity. Besides, some 61 compounds were detected in both N. ramosissima polar extracts by UHPLC-MS. Of those, four were coumarins (peaks 2, 3, 6 and 18), 15 flavanones (peaks 4, 7, 9, 11, 15, 17, 21, 22, 32, 38, 46-49 and 56), 12 flavones (peaks 12, 13, 19, 23, 30, 39, 40-44 and 50), 3 phenolic acids (peaks 5,8 and 10) and 22 oxylipins/fatty acids (peaks 1,14,16,20,24,29,31,[33][34][35][36][37], 51-55, 57-61). Compound 2 presented higher relaxation effects than N. ramosissima extract.…”

“…Furthermore, from the extrusion partition of the HSCCC run, only hydroxypalmitic acid (Peak 61) and inseparable mixtures of fatty acids were isolated. Other potential approaches to pre-treat and extract the active compounds are nowadays employed, including experimental approaches for the identification after elimination of the effect of matrix on quantitative analyses by HPLC−MS, such as CO 2 extraction, pretreatment with ammonia and hydrogen peroxide, pressurized solvents; however, infusion is the typical edible form, and methanol extraction at ambient temperature proved to be good solvent to extract all the flavonoids and phenolics in our Nolana species for purification purposes [31][32][33]. -6 ).…”

The feasibility of enhanced biological phosphorus removal in the novel oxic/extended idle process using fermentation liquid from sludge fermentation

“…The determinations of SOP, NH 4 + -N, COD, TSS and VSS were based on the literature. 17,[23][24][25][26] VFA was analyzed by Ailgent 6890 GC with ame ionization detector, the detailed measurement method was as follows: the samples were centrifuged at 5000g for 20 min before the determination, and the supernatant was diluted appropriately multiple times to make the concentration of VFA less than 200 mg L À1 , then ltered with 0.45 mm lter membrane to remove particulate matter. The ltrate was collected in 1.5 mL gas chromatography special bottle, then added 50-150 mL H 3 PO 4 , so that pH value of sample was less than 3.…”

Enhanced sludge anaerobic fermentation using microwave pretreatment combined with biosurfactant alkyl polyglycoside

“…The organic matter in WAS is usually in the form of granules or macromolecules, and the organic substances are rst dissolved before being used. 36,37 Fig. 4 shows the effect of microwave combined APG on WAS solubilization.…”