| Autor: |
Schwab, Elisabeth, Benda, Irmgard, Schreier, Peter |
| Zdroj: |
Zeitschrift für Naturforschung C; June 1991, Vol. 46 Issue: 5-6 p395-397, 3p |
| Abstrakt: |
Biotransformation of ß-damascone (1) was studied with four strains of Botrytis cinerea using grape must (A) and a mixture of A with synthetic medium (B). Whereas in A 4-hydroxy-ß-damascone (2), 3-hydroxy-ß-damascone (3), and 2-hydroxy-ß-damascone (4) were found as volatile bioconversion products, in B additionally 4-oxo-ß-damascone (5) was detected. Furthermore, 9-hydroxy-8,9-dihydro-ß-damascone (6) was identified as chemically formed by-product. Quantitatively, the results were strongly dependent on the strain and medium used. Incubation of 1 with two B. c. strains in medium Bled to an almost selective formation (93 and 95%) of 2 and the highest yield of products (30 and 66%). The bioconversion products were identified by capillary gas chromatography (H RG C) and coupled HRGC techniques, i.e. - mass spectrometry (HRGC-MS) and - Fourier transform infrared spectroscopy (HRGC-FTIR) after extractive sample preparation |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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