Aerial parts of Hypericum perforatum L. (St. John’s wort) were collected in June–July in southeastern Syria during the flowering season. Silver nitrate; 1,1-diphenyl-2-picrylhydrazyl (DPPH); potassium persulphate; 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) were purchased from Sigma-Aldrich (Darmstadt, Germany), Filter paper Whatman 90 mm from GE Healthcare Life Sciences (Freiburg, Germany), 0.22 µm nylon syringe Filter and Sartolab Vakuumfilter 180C5; 0.22 µm Polyethersulfon, 500 mL; syringe filter 25 mm, 0.45 um RC with GF prefilter; 0.45 μm PTFE filter and Vivaspin 10 kDa from Sartorius (Goettingen, Germany). Ethanol, methanol, and acetone were of HPLC grade from Roth (Karlsruhe, Germany), and acetonitrile from VWR (Hannover, Germany). Water was purified by a QM system from Sartorius (Goettingen, Germany).
Qm system
Manufactured by Sartorius
Sourced in Germany
The QM system is a comprehensive quality management solution designed to ensure the reliability and traceability of laboratory processes. It provides a centralized platform for managing and monitoring various quality control tasks, such as calibration, maintenance, and documentation. The QM system offers a systematic approach to maintaining laboratory standards and compliance with industry regulations.
Automatically generated - may contain errors
Lab products found in correlation
Acetonitrile, by Avantor (2 mentions)
Potassium persulphate, by Merck Group (1 mentions)
1 1 diphenyl 2 picrylhydrazyl, by Merck Group (1 mentions)
Silver nitrate, by Merck Group (1 mentions)
Vivaspin, by Sartorius (1 mentions)
Hyperoside, by Carl Roth (1 mentions)
Quercitrin hydrate, by Merck Group (1 mentions)
Acetone, by Carl Roth (1 mentions)
Ptfe filter, by Sartorius (1 mentions)
1 1 diphenyl 2 picrylhydrazyl dpph potassium persulfate, by Merck Group (1 mentions)
2 2 azino bis 3 ethylbenzothiazoline 6 sulfonic acid, by Merck Group (1 mentions)
Chlorogenic acid, by Merck Group (1 mentions)
Ethanol, by Carl Roth (1 mentions)
Methanol, by Carl Roth (1 mentions)
2 protocols using qm system
1
Antioxidant Potential of Hypericum perforatum
2
Extraction and Characterization of Bioactive Compounds from St. John's Wort
Check if the same lab product or an alternative is used in the 5 most similar protocols
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Aerial parts (leaves, stem, petals, and flowers)
of H. perforatumL (St. John’s wort) were collected in July–August
2018 from the Ghab Plain in Syria (Google maps: 35.586856, 36.355724
and 180–200 m above sea level) and harvested during the flowering
season. Hypericin and quercetin were purchased from Cayman Pharma
(Neratovice, Czech Republic); hyperoside was purchased from Roth (Karlsruhe,
Germany); quercitrin hydrate, chlorogenic acid, 1,1-diphenyl-2-picrylhydrazyl
(DPPH), potassium persulfate, and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic
acid) (ABTS) were purchased from Sigma-Aldrich (Darmstadt, Germany);
Whatman 90 mm filter paper was purchased from GE Healthcare Life Sciences
(Freiburg Germany); a 0.22 μm nylon syringe filter, Sartolab
Vakuumfilter 180C5, 0.22 μm polyethersulfon, 500 mL, 25 mm syringe
filter, 0.45 μm RC with GF prefilter, and 0.45 μm PTFE
filter were purchased from Sartorius (Goettingen, Germany); and 0.45
μm prefilter was purchased from Wicom (Heppenheim, Germany).
Ethanol, mEthanol, and acetone were HPLC grade from Roth (Karlsruhe,
Germany); acetonitrile was obtained from VWR (Hannover, Germany),
and water was purified using a QM system from Sartorius (Goettingen,
Germany).
of H. perforatumL (St. John’s wort) were collected in July–August
2018 from the Ghab Plain in Syria (Google maps: 35.586856, 36.355724
and 180–200 m above sea level) and harvested during the flowering
season. Hypericin and quercetin were purchased from Cayman Pharma
(Neratovice, Czech Republic); hyperoside was purchased from Roth (Karlsruhe,
Germany); quercitrin hydrate, chlorogenic acid, 1,1-diphenyl-2-picrylhydrazyl
(DPPH), potassium persulfate, and 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic
acid) (ABTS) were purchased from Sigma-Aldrich (Darmstadt, Germany);
Whatman 90 mm filter paper was purchased from GE Healthcare Life Sciences
(Freiburg Germany); a 0.22 μm nylon syringe filter, Sartolab
Vakuumfilter 180C5, 0.22 μm polyethersulfon, 500 mL, 25 mm syringe
filter, 0.45 μm RC with GF prefilter, and 0.45 μm PTFE
filter were purchased from Sartorius (Goettingen, Germany); and 0.45
μm prefilter was purchased from Wicom (Heppenheim, Germany).
Ethanol, mEthanol, and acetone were HPLC grade from Roth (Karlsruhe,
Germany); acetonitrile was obtained from VWR (Hannover, Germany),
and water was purified using a QM system from Sartorius (Goettingen,
Germany).
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