Details

Autor(en) / Beteiligte

• Ghosheh, Omar A.
• Houdi, Abdulghani A.
• Crooks, Peter A.

Titel

High performance liquid chromatographic analysis of the pharmacologically active quinones and related compounds in the oil of the black seed ( Nigella sativa L.)

Ist Teil von

• Journal of pharmaceutical and biomedical analysis, 1999-04, Vol.19 (5), p.757-762

Ort / Verlag

Amsterdam: Elsevier B.V

Erscheinungsjahr

1999

Quelle

MEDLINE

Beschreibungen/Notizen

• An HPLC method for quantifying the putative pharmacologically active constituents: thymoquinone (TQ), dithymoquinone (DTQ), thymohydroquinone (THQ), and thymol (THY), in the oil of Nigella sativa seed is described. Extraction of the constituents from the oil was carried out using C 18 PrepSep mini columns followed by quantification of the recovered constituents by HPLC on a reversed-phase μBondapak C 18 analytical column, using an isocratic mobile phase of water:methanol:2-propanol (50:45:5% v/v) at a flow rate of 2 ml min −1. UV detection was at 254 nm for TQ, DTQ, and THY, and at 294 nm for THQ. The above four compounds were separated with good resolution, reproducibility, and sensitivity under these conditions. This analytical method was used to quantify the above four constituents in a commercial sample of N. sativa seed oil, and provides a good quality control methodology for the pharmacologically active components in this widely used natural remedy.