i THERMAL PROCESSING EFFECTS ON TOTAL ... - McGill University

Table 2.5 Main classes of polyphenolic compounds (Adapted from Bravo, 1998).
Phenolics, including ‗phenolic acids‘ — phenols with carboxyl groups — are low
molecular weight compounds, with a C6-C1 structure (Table 2.4). These are commonly
present in plants and include phenolic acids (gallic, vanillic, syringic, p-hydroxybenzoic)
and aldehydes. Ferulic acid is one of the most abundant phenolic acids in common pulses
and it occupies an intermediate level of phenolic acids between p-coumaric acid and
sinapic acid (Lutharia and Pastor-Corrales, 2006).
There are two subgroups of phenolic acids: hydroxybenzoic acids and
hydroxycinnamic acids (Fig. 2.3) (Balasundaram et al., 2006). Gallic acid, p-
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