Bark Characterisation of the Brazilian Hardwood Goupia glabra in Terms of Its Valorisation

Bark Characterisation of the Brazilian Hardwood Goupia glabra in Terms of Its Valorisation

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The bark of Goupia glabra trees grown in a native forest area in the Amazon region of Brazil was anatomically and chemically characterised for potential use as a chemical source for bio-refineries.The bark is silvery-grey to reddish-grey, with a scaly rhytidome composed of 2 to 3 mike and ike conversation hearts periderms with a small phellem content.The phloem has abundant sieve tube members and a conspicuous presence of sclerified nodules of fiber-sclereids or smart tv panasonic 32 tc-32fs500b sclereids; no fibers were observed.

The bark had the following average composition (dry mass): 5.2% ash, 24.6% total extractives, 1.

1% suberin, and 43.8% total lignin.The polysaccharide composition showed a high ratio of xylan hemicelluloses to cellulose.

The ethanol-water bark extract showed high antioxidant capacity.The chemical characterisation of different granulometric fractions showed that extractives were present preferentially in the finest fractions, particularly with enrichment in ethanol solution.