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C18 spherisorb s5 ods2

Manufactured by Waters Corporation

The C18 Spherisorb S5 ODS2 is a reversed-phase high-performance liquid chromatography (HPLC) column. It features silica-based packing material with chemically bonded octadecyl (C18) functional groups. This column is designed for the separation and analysis of a wide range of compounds, including polar and non-polar molecules.

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3 protocols using c18 spherisorb s5 ods2

1

HPLC-DAD-FD Analysis of Polyphenols

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Condensed water extracts were analyzed using HPLC-DAD-FD system. An HPLC gradient pump (P4000, ThermoFinnigan) was coupled with a vacuum membrane degasser (SCM1000, ThermoFinnigan), an AS3000 autosampler (ThermoFinnigan), a UV6000 diode array detector and a FL3000 fluorescence detector (ThermoFinnigan). Separations of polyphenols were carried out using a reversed-phase HPLC column C18 Spherisorb S5 ODS2 (Waters, 250 mm x 4 mm, 5 µm). Column temperature was set at 40 °C and injection volume was 20 μL.
Mobile phases for the determination of polyphenols in standard solutions and condensate water samples was 5% methanol-0.1% formic acid in water (eluent A) and 95% methanol-0.1% formic acid in water (eluent B). The gradient was as follows: 0-5 min, 100% A; 5-45 min, linear gradient up to 100% B; 45-55 min 100% B; 55-57 min, linear gradient up to 100% A. Post-run time was 15 min. Elution was performed at a solvent flow rate of 0.8 mL min-1. Table S1 summarized the retention time (tR), solvent used for stock solution preparation and spectra information (UV absorbance (λmax) and fluorescence (λexcitation/ λemission)) of 31 polyphenols standards separated using the above conditions. ChromQuest™ 4.2 Chromatography Data System was used to carry out HPLC-DAD/FD control, data acquisition and data analysis.
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2

HPLC Quantification of Antioxidant Compounds

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RA in the extracts was quantified using an HPLC with a diode array detector. An HPLC gradient pump (P4000, Thermo Finnigan, Thermo Finnigan Italia S.p.A., Milan, Italy) was coupled with a vacuum membrane degasser (SCM1000, ThermoFinnigan), an AS3000 autosampler (Thermo Finnigan), a UV6000 diode array detector, and a FL3000 fluorescence detector (Thermo Finnigan). Separations were carried out using a reversed-phase HPLC column C18 Spherisorb S5 ODS2 (Waters, 250 mm × 4 mm, 5 µm). The column temperature was set at 40 °C and the injection volume was 2 μL. Mobile phases were 5% methanol–95% of 5 mM sulphuric acid in water (eluent A) and 95% methanol–5% of 5 mM sulphuric acid in water (eluent B). The gradient was as follows: 0–5 min, 80% A; 5–20 min, linear gradient up to 80% B; 20–22 min, linear gradient up to 100% B; 22–45 min 100% B. Post-run time was 15 min. Elution was performed at a solvent flow rate of 0.8 mL min−1. Detection was performed in absorbance at 220, 280, and 350 nm and in fluorescence setting the excitation and emission wavelengths at 280 and 365 nm, respectively. The ChromQuest™ Thermo Finnigan 4.2 Chromatography Data System was used to carry out HPLC-DAD/FD control, data acquisition, and data analysis.
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3

HPLC-DAD-FD Analysis of Polyphenols

Check if the same lab product or an alternative is used in the 5 most similar protocols
Condensed water extracts were analyzed using HPLC-DAD-FD system. An HPLC gradient pump (P4000, ThermoFinnigan) was coupled with a vacuum membrane degasser (SCM1000, ThermoFinnigan), an AS3000 autosampler (ThermoFinnigan), a UV6000 diode array detector and a FL3000 fluorescence detector (ThermoFinnigan). Separations of polyphenols were carried out using a reversed-phase HPLC column C18 Spherisorb S5 ODS2 (Waters, 250 mm x 4 mm, 5 µm). Column temperature was set at 40 °C and injection volume was 20 μL.
Mobile phases for the determination of polyphenols in standard solutions and condensate water samples was 5% methanol-0.1% formic acid in water (eluent A) and 95% methanol-0.1% formic acid in water (eluent B). The gradient was as follows: 0-5 min, 100% A; 5-45 min, linear gradient up to 100% B; 45-55 min 100% B; 55-57 min, linear gradient up to 100% A. Post-run time was 15 min. Elution was performed at a solvent flow rate of 0.8 mL min-1. Table S1 summarized the retention time (tR), solvent used for stock solution preparation and spectra information (UV absorbance (λmax) and fluorescence (λexcitation/ λemission)) of 31 polyphenols standards separated using the above conditions. ChromQuest™ 4.2 Chromatography Data System was used to carry out HPLC-DAD/FD control, data acquisition and data analysis.
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