title: Ferulic acid dehydrodimer and dehydrotrimer profiles of distiller's dried grains with solubles from different cereal species.
abstract: Ferulic acid dehydrodimers (DFA) and dehydrotrimers (TriFA) ester-linked to plant cell wall polymers may cross-link not only cell wall polysaccharides but also other cell wall components including proteins and lignin, thus enhancing the rigidity and potentially affecting the enzymatic degradation of the plant cell wall. Corn, wheat, and mixed-cereal distiller's dried grains with solubles (DDGS) were investigated for composition of DFAs and TriFAs by reversed phase high-performance liquid chromatography with ultraviolet detection. Corn DDGS contained 5.3 and 5.9 times higher contents of total DFAs than wheat and mixed-cereal DDGS, respectively. Furthermore, the contents of total TriFAs were 5.7 and 6.3 times higher in corn DDGS than in wheat and mixed-cereal DDGS, respectively. In addition, both corn grains and corresponding DDGS had similar profiles of individual DFAs and TriFAs, indicating that ferulic acid cross-links in the corn cell wall are presumably not modified during fermentation and DDGS processing.
authors: Enzyme Development, DuPont Industrial Biosciences ApS, Edwin Rahrs Vej 38, DK-8220 Brabrand, Denmark.
authors: Mads B
authors: MB
authors: Pedersen
authors: Mirko
authors: M
authors: Bunzel
authors: Judith
authors: J
authors: Schäfer
authors: Knud Erik B
authors: KE
authors: Knudsen
authors: Jens F
authors: JF
authors: Sørensen
authors: Shukun
authors: S
authors: Yu
authors: Helle N
authors: HN
authors: Lærke
mesh_terms: D002851:Chromatography, High Pressure Liquid; D003373:Coumaric Acids / Q000737:chemistry*; D019281:Dimerization; D057168:Distillation; D012995:Solubility; D014908:Triticum / Q000737:chemistry*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D003373:Coumaric Acids; C004999:ferulic acid
keywords: corn; dehydrodimers; dehydrotrimers; distiller’s dried grains with solubles (DDGS); ferulic acid; wheat