Miscanthus x giganteus Bark Organosolv Fractionation: Fate of Lipophilic Components and Formation of Valuable Phenolic Byproducts

authors	Villaverde, JJ; De Vega, A; Ligero, P; Freire, CSR; Neto, CP; Silvestre, AJD
nationality	International
journal	JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
author keywords	Miscanthus x giganteus; organosolv fractionation; lipophilic extractives; GC-MS analysis
keywords	KRAFT PULP-MILL; EUCALYPTUS-GLOBULUS; PITCH DEPOSITS; EXTRACTIVES; SINENSIS; ACID; WOOD; DELIGNIFICATION; BIOREFINERIES; ANTHRAQUINONE
abstract	The behavior of Miscanthus x giganteus bark lipophilic extractives during three acid organosolv pulping processes (Acetosolv, formic acid fractionation, and Milox) was investigated. It was demonstrated that nearly 90% of the lipophilic extractives were removed from pulps by either dissolution in the organosolv liquors (fatty acids and alcohols) or extensive degradation (sterols). The organosolv liquors were found to be rich in vanillin, syringaldehyde, and ferulic, vanillic, and p-coumaric acids. The Acetosolv fractionation process was found to be the most efficient in the removal of lipophilic components from pulps, and it was also the process that generated higher amounts of valuable monomeric phenolic compounds that could be exploited within the biorefinery context.
publisher	AMER CHEMICAL SOC
issn	0021-8561
year published	2010
volume	58
issue	14
beginning page	8279
ending page	8285
digital object identifier (doi)	10.1021/jf101174x
web of science category	Agriculture, Multidisciplinary; Chemistry, Applied; Food Science & Technology
subject category	Agriculture; Chemistry; Food Science & Technology
unique article identifier	WOS:000280021100024