Co-Oxydation von Linolsäure zu flüchtigen Verbindungen von Lipoxygenase-Isoenzymen aus Sojabohnen
- 1 September 1977
- journal article
- abstracts
- Published by Springer Nature in Zeitschrift für Lebensmittel-Untersuchung und Forschung
- Vol. 165 (3) , 137-139
- https://doi.org/10.1007/bf01650744
Abstract
Lipoxygenase isoenzymes L-1 (optimum pH 9.0) and L-2 (pH 6.5) were incubated with linoleic acid. The extracted volatile compounds were separated by gas-chromatography and analysed by mass spectrometry. The relative amounts of volatile carbonyl compounds, which were formed during catalysis were determined (mole percent). L-1 yielded hexanal (>90% at pH 7 and 70% at pH 8.5). L-2 at pH 7 yielded hexanal (31), two geometric isomers of 2,4-decadienal (40), 2-trans-heptenal (12) and 2-trans-octenal (10). Lipoxygenase-Isoenzyme L-1 (pH-Optimum 9,0) und L-2 (pH 6,5) wurden mit Linolsäure incubiert. Die extrahierten flüchtigen Verbindungen wurden gaschromatographisch getrennt und massenspektrometrisch analysiert. Die relativen Mengenan flüchtigen Carbonylverbindungen, die während der Katalyse entstanden waren, wurden bestimmt (mol-%). L-1 bildete Hexanal (>90% bei pH 7 und 70% bei pH 8,5). L-2 ergab bei pH 7 Hexanal (31), zwei geometrische Isomere des 2,4-Decadienals (40), 2-trans-Heptenal (12) und 2-trans-Octenal (10).Keywords
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