Supercritical Fluid Extraction of Quinones from Compost for Microbial Community Analysis

Figure 4

Chromatogram of quinones obtained from compost by SFE and UPLC. Sample amount: 0.3 g dried compost. SFE conditions: 45°C; 25 MPa; 15 min; 90% CO₂-10% methanol with flow rate of 1 mL min⁻¹. UPLC conditions: column: 2.1 × 30 mm, 1.7 μm Acquity BEH C18 at 35°C; methanol mobile phase at flow rate of 0.3 mL min⁻¹; 10 μL sample injection volume, PDA.