Study of Aromatic Compounds Derived from Sugarcane Bagasse: II. Effect of Concentration

TY - JOUR

T1 - Study of Aromatic Compounds Derived from Sugarcane Bagasse: II. Effect of Concentration

AU - Al Arni, Saleh

AU - Drake, Alex F.

AU - Del Borghi, Marco

AU - Converti, Attilio

PY - 2010/3

Y1 - 2010/3

N2 - The results of a set of experiments that were designed to integrate current knowledge on the major constituents of sugarcane bagasse lignin, specifically p-coumaric, ferulic, syringic acids, and vanillin are presented. These aromatic compounds have well-known antioxidant power and they are very important for the food, pharmaceutical, and nutraceutical industries. Following a study on the effect of pH upon the spectra of these monomers and the determination of their pK(a) values, their self-association properties in ethanol as a solvent, particularly at concentrations <10(-4) M were investigated using UV spectrophotometry and their K-ass values were determined. The results collected allowed to better understand the chemistry of sugarcane lignin and provide a contribution to the possible exploitation of this abundant straw material for the recovery of fine chemicals.

AB - The results of a set of experiments that were designed to integrate current knowledge on the major constituents of sugarcane bagasse lignin, specifically p-coumaric, ferulic, syringic acids, and vanillin are presented. These aromatic compounds have well-known antioxidant power and they are very important for the food, pharmaceutical, and nutraceutical industries. Following a study on the effect of pH upon the spectra of these monomers and the determination of their pK(a) values, their self-association properties in ethanol as a solvent, particularly at concentrations <10(-4) M were investigated using UV spectrophotometry and their K-ass values were determined. The results collected allowed to better understand the chemistry of sugarcane lignin and provide a contribution to the possible exploitation of this abundant straw material for the recovery of fine chemicals.

U2 - 10.1002/ceat.200900552

DO - 10.1002/ceat.200900552

M3 - Article

VL - 33

SP - 523

EP - 531

JO - CHEMICAL ENGINEERING AND TECHNOLOGY

JF - CHEMICAL ENGINEERING AND TECHNOLOGY

IS - 3

ER -