A. Bernreuther, J. Bank, G. Krammer
Feb 1, 1991
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0
Influential Citations
24
Citations
Journal
Phytochemical Analysis
Abstract
On-line coupled multidimensional gas chromatography (DB-5/Lipodex D)/mass spectrometry was used for direct chiral evaluation of δ-hexa-, δ-octa-, δ-deca- and, in part, δ-dodecalactone in various fruits. Whereas in raspberry the (S)-enantiomers predominated [enantiomeric excess (ee) values from 45.0 to 100%], the (R)-enantimomers prevailed in apricot, coconut, greengage, mango, pineapple, plum and yellow plum (ee values from 14.4 to 100%). Variations between (S)- and (R)-enantiomers depending on chain length were found in red and yellow passion fruit, peach and strawberry. δ-Hexalactone in greengage and pineapple as well as δ-dodecalactone in coconut were found to occur in these fruits in approximately racemic form [ee values 10.8% (R) and 4.4% (R) as well as 5.2% (R), respectively].