Among them, 7 compounds were identified as furaldehyde, trans-2-hexen-1-ol, 2-heptanal, 3-octanol, decanal, 2-undecanone and hexadecane.
Among them, 8 were identified as furaldehyde, trans-2-hexen-1-ol, 2-undecanone, 3-octanol, 2-nonanone, 2-heptanopne, butanal, and hexadecane.
These six compounds were furaldehyde, 1heptanone, 3-octanol, 2-nonanone, 2-undecanone, hexadecane.
This degradation may be either biological or thermal in nature, the latter especially for the furans, furaldehydes and dibenzofuran (Pastorova et al.
More specifically, in comparison with NO-1, among the carbohydrate markers there was a strong increase of furans, furaldehydes, levoglucosenone and acetic acid, while levoglucosan, pyranones and dianhydrorhamnose diminished, which is a clear indication of a shift of fresh polysaccharide to degraded/microbial carbohydrates (Saiz-Jimenez and de Leeuw 1986; Buurman and Roscoe 2011).