1 research outputs found
Formation of Furan from Linoleic Acid Thermal Oxidation: (<i>E,E</i>)‑2,4-Decadienal as a Critical Intermediate Product
The
linoleic acid reaction models were set at 150 °C for 120
min, and its oxidation process was monitored by nuclear magnetic resonance
(NMR) and gas chromatography–mass spectrometry (GC-MS). Results
showed that no furan was formed from linoleic acid without heating,
while furan accumulated throughout the heating process. Linoleic acid
ran out within 30 min, which indicated that furan was formed mainly
from the intermediate oxidation products of linoleic acid after 30
min. It should be noticed that the content of (E,E)-2,4-decadienal reached maximum once the linoleic acid ran out and
then decreased with the formation of furan. Multivariate statistical
analysis suggested that (E,E)-2,4-decadienal
was the most important aldehyde related to furan formation during
linoleic acid oxidation. To prove this assumption, the variation of
furan from (E,E)-2,4-decadienal reaction models heating
at 150 °C for 60 min was also studied. Results showed that the
content of furan increased with the oxidation of (E,E)-2,4-decadienal. Furthermore, NMR and GC-MS data
proved that (E,E)-2,4-decadienal
could be oxidized to 4,5-epoxy-(E)-2-decenal. In
conclusion, our results supported (E,E)-2,4-decadienal and trans-4,5-epoxy-(E)-2-decenal as critical intermediate products of furan formation
from linoleic acid oxidation