The extraction and transesterification of soil lipids into fatty acid methyl esters (FAMEs) is a useful technique for studying soil microbial communities. The objective of this study was to find the best solvent mixture to extract soil lipids with a pressurized solvent extractor system. Four solvent mixtures were selected for testing: chloroform:methanol:phosphate buffer (1:2:0.8, v/v/v), chlor...

The quantification of antibiotics (ABs) in sediments is an analytical challenge, but at the same time, it indispensable to understand fate ABs aquatic systems such as rivers. aim this study was develop a comprehensive method determine 19 classified macrolides, sulfonamides, fluoroquinolones, tetracyclines, clindamycin and trimethoprim river sediments, using combination pressurized liquid extrac...

Efficient mode shape extraction of fluid-structure systems is of particular interest in engineering. An efficient modified version of unsymmetric Lanczos method is proposed in this paper. The original unsymmetric Lanczos method was applied to general form of unsymmetric matrices, while the proposed method is developed particularly for the fluid-structure matrices. The method provides us with si...

In this study, extraction yield of valuable compounds from brewer’s spent grain (BSG) using pressurized liquid (PLE) was investigated varying temperature, solvent type, and flow rate at a constant pressure. The results were compared with Soxhlet extractions the total phenolic (TPC), flavonoid (TFC), antioxidant activity (AA), reducing sugars (RS), (TRS) as indices. highest PLE 20.1 wt%, 120 °C,...