DOI: 10.1002/sscp.202000087 The cover picture shows the application of ultrasound-assisted extraction and liquid-liquid to recover polyhydroxylated polymethoxylated flavones, as well phenolic acids from traditional herbal plant, Orthosiphon aristatus. This is a perennial herb that commonly known Java Tea or Cat's Whiskers. It widely used by people in region Southeast Asia folk remedy for many d...

Furfural is a biomass derived-chemical that can be used to replace petrochemicals. In this study, the acid-catalyzed conversion of xylose and xylan to furfural by microwave-assisted reaction was investigated at selected ranges of temperature (140-190°C), time (1-30 min), substrate concentration (1:5-1:200 solid:liquid ratio), and pH (2-0.13). We found that a temperature of 180°C, a solid:liquid...

The aim of this study was to compare the effects of solvent and ultrasound-assisted extraction methods with supercritical fluid extraction on antioxidant activity of loquat (Eriobotrya japonica Lindl.) fruit skin extract in stability of soybean oil at 25°C. Oxidative stability alterations of soybean oils containing 400 (SEA) and 1000 ppm (SEB) of ethanol extract, 400 (SSA) and 1000 ppm (SSB) of...

Ionic liquid based, ultrasound-assisted extraction was successfully applied to the extraction of phenolcarboxylic acids, carnosic acid and rosmarinic acid, from Rosmarinus officinalis. Eight ionic liquids, with different cations and anions, were investigated in this work and [C(8)mim]Br was selected as the optimal solvent. Ultrasound extraction parameters, including soaking time, solid-liquid r...

With density functional theory, vibrational circular dichroism (VCD) and infrared absorption (IR) spectra are obtained at the B3LYP/CC-pVTZ level of theory for 20 alpha-amino acids. The contribution of different vibration modes to the IR and VCD spectra is analyzed. Overall agreement between calculated results for amino acids in gas phase with the available experimental VCD data for matrix-assi...

Fig. 1. Mean (6SEM [standard error of the mean]) stop-and-turn rates of glycine-grown cells in response to artificial seawater (ASW), ammonium (NH4), nitrate (NO3), and amino acids. Abbreviations for amino acids are standard three-letter codes. The Y-axis units are Hertz (Hz), the number of stops and turns per second. A minimum of 40 paths was analyzed for ASW and each chemical; compounds were ...

The purpose of this research was to characterize an olive core collection using some agronomic characters and simple sequence repeat (SSR) markers and to determine SSR markers associated with the content of fatty acids in olive oil. SSR marker analysis demonstrated the presence of a high amount of genetic variation between the olive cultivars analyzed. A UPGMA dendrogram demonstrated that olive...

Triton-X-100, a polyethylene glycol 4-(tert-octyl)phenyl ether, has been found to be an active micellar organic catalyst for the one-pot selective synthesis of arylmethyl-H-phosphinic acids in up 65% yields by direct phosphinylation arylmethyl halides with red phosphorus KOH/H2O/toluene multiphase superbase system. The demonstrates good recyclability. As result, expeditious method chemoselectiv...

phenolic compounds, especially those of plant origin, constitute an essential part of the human diet, and are of considerable interest due to their antioxidant properties. in this study, ultrasound-assisted extraction (uae), microwave-assisted extraction (mae), as well as maceration extraction (me) methods were applied for phenolic compounds’ extraction from pistachio green hull. response surfa...