Sterol composition from inflorescences of Hieracium pilosella L.

• Autorzy: Gawronska-Grzywacz M. , Krzaczek T.
• Języki publikacji: EN

Abstrakty

EN

The fraction of sterol acetates from the inflorescences of Hieracium pilosella has been isolated in the typical way from petroleum ether extract. By means of the weight method the total amount of sterols was determined (0.2659%). The mixtures of sterol acetates and free sterols were investigated using GC-MS techniques. The occurrence of about 18 sterols has been observed. Cholesterol, cholest-8(14)-en-3b-ol, cholesta-5.7-dien-3b-ol, cholest-7-en-3b-ol, ergosta-5.24-dien-3b-ol, campesterol, stigmasterol, b-sitosterol, fucosterol, 5a-stigmast-7-en-3a-ol were identified. The probable structures of lophenol, isofucosterol, 5a-stigmasta-7.24-dien-3b-ol, lanosta-9(11).24-dien-3b-ol and 24-ethylidene lophenol were stated on the basis of literature data. The last 4 sterols occur in a vestigial quantity, which made its identification impossible. Sitos erol and cholesterol are remarkably dominating sterols in the fraction.

Słowa kluczowe

EN

sterol composition; inflorescence; Hieracium pilosella; Compositae; phytosterol

• Wydawca: -
• Czasopismo: Acta Societatis Botanicorum Poloniae
• Rocznik: 2006
• Tom: 75
• Numer: 1
• Opis fizyczny: p.29-32,fig.,ref.

Twórcy

autor

Gawronska-Grzywacz M.

• Medical University of Lodz, Chodzki 1, 20-093 Lublin, Poland

autor

Krzaczek T.