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Third-party-funded project

Title:
Biosynthesis and metabolism of octane-1,3-diol and 5-(Z)-octene-1,3-diol in apples

Project management at the University of Würzburg:

• Dr. Wilfried Schwab ,Tel: 888-5482,Fax: 888-5484,Mail: schwab@pzlc.uni-wuerzburg.de

Participating scientists:

• Dr. Till Beuerle ,Tel: 888-4651,Fax: 888-5484,Mail: beuerle@pzlc.uni-wuerzburg.de

Abstract:
Octane-1,3-diol (1) and 5-(Z)-octene-1,3-diol (2) are typical secondary fruit constituents of apples exhibiting bacteriostatic and fungistatic effects. The enantiomeric ratio of the chiral compounds 1 and 2 including their glycosides as well as the derivatives ethyl 3-hydroxyoctanoate and ethyl 5-(Z)-3-hydroxyoctenoate was determined and feeding experiments with isotopically labeled postulated precursors were performed to elucidate their biosyntheses.

Key words:
    fruit ripening
    apple

Projekt period: from 07.1995 to 06.1999

Funding institution:
DFG ,Granting date: 22.05.1995

Publications:

• Beuerle, Schwab. (1999). Biosynthesis of R-(+)-octane-1,3-diol. Crucial role of beta-oxidation in the enantioselective generation of 1,3-diols in stored apples. (monograph)
• Beuerle, Schwab. (1999). Metabolic profile of linoleic acid in stored apples: formation of 13(R)-hydroxy-9(Z),11(E)-octadecadienoic acid. (monograph)
• Beuerle et al.. (1999). Isolation, identification, and enantioselective synthesis of octane-1,3,7-triol: determination of its absolute configuration. (monograph)
• Dietrich et al.. (1997). Absolute configuration and conformation of 1,3-dioxanes from cider. (monograph)

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