Proteins in Norway spruce [Picea abies] thermomechanical pulp

Proteins in Norway spruce [Picea abies] thermomechanical pulp

Two methods of cytochemical staining using Coomassie dye and Cu⁺-bicinchoninic acid, respectively, showed that there are proteins in thermomechanical pulp (TMP) of Norway spruce. Protein isolated from TMP was analyzed for amino acid composition. There was about twice the amount of acidic amino acid...

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Veröffentlicht in:Journal of wood science 2007-04, Vol.53 (2), p.143-146
1. Verfasser: Hafren, J.(Swedish Univ. of Agricultural Sciences, Uppsala (Sweden))
Format: Artikel
Sprache:eng
Schlagworte:
ACIDE AMINE
Amino acid
AMINO ACIDS
AMINOACIDOS
CHEMICOPHYSICAL PROPERTIES
Cytochemical staining
MECHANICAL PULP
Organic chemistry
PASTA MECANICA
PATE MECANIQUE
PICEA ABIES
Polypeptides
PROPIEDADES FISICOQUIMICAS
PROPRIETE PHYSICOCHIMIQUE
PROTEINAS
PROTEINE
PROTEINS
thermomechanical pulping
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Beschreibung
Zusammenfassung:Two methods of cytochemical staining using Coomassie dye and Cu⁺-bicinchoninic acid, respectively, showed that there are proteins in thermomechanical pulp (TMP) of Norway spruce. Protein isolated from TMP was analyzed for amino acid composition. There was about twice the amount of acidic amino acid material compared with basic amino acids, and the presence of glucosamine indicated that the isolated polypeptides also contained glycoproteins. The presence of proteins in ray cells and fiber tracheids in TMP adds to the chemical heterogeneity of the structurally complex high-yield pulp.
ISSN:1435-0211
1611-4663
DOI:10.1007/s10086-006-0827-y