The incorporation of mevalonate-[2-14C] into the sterol fractions of Calendula officinalis |
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Authors: | Gra?yna Adler Zofia Kasprzyk |
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Institution: | Department of Biochemistry, University of Warszawa 02-089 Warszawa, al. ?wirki i Wigury 93, Poland |
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Abstract: | The incorporation of mevalonate-2-14C] into the free sterols, steryl esters, steryl glucosides, acylated steryl glucosides and water-soluble complexes was investigated and the sterols of each fraction were separated into stanols, Δ7 sterols, Δ5 sterols, stigmasterol, clerosterol and methylene-cholesterol. The stanols and Δ7 sterols were more strongly labelled in the steryl esters than in the free sterols. The Δ5 sterols and stigmasterol were more intensively labelled in the free sterols than in the steryl esters. All sterol types were more labelled in the steryl glycosides than in the acylated steryl glucosides. Stanols were probably formed from Δ7 or Δ5 precursors. |
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Keywords: | Compositae steryl esters steryl glucosides acylated steryl glucosides water-soluble sterol complexes |
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