Sammanfattning

Following structural and cytochemical studies (Part I) on thermally modified ash wood (TMW) by the thermo-vacuum (Termovuoto) process, changes in the distribution of noncellulosic polysaccharides have been investigated in TMW treated for 3 h at 220 by means of immunogold localization methods. Pectins (homogalacturonan, rhamnogalacturonan-I) and xyloglucan were significantly degraded in compound middle lamella (CML), including the middle lamella cell corner regions (CML Xylan and mannan degradation were also visible in fiber cell walls. In particular, degradation of mannan was very significant and showed variation between cell wall regions even within the same cell wall. The degradation of pectins was more significant than that of hemicelluloses. In summary, results suggest that each noncellulosic polysaccharide may have a different degradation process in ash TMWs°C (TMW3 h, 220°C)cc), of all xylem cells after thermal modification.

Nyckelord

ash, hemicelluloses, immunolocalization, pectins, thermally modified wood (TMW), thermo-vacuum (Termovuoto) process

Publicerad i

Holzforschung
2015, Volym: 69, nummer: 5, sidor: 615-625

SLU författare

• Kim, Jongsik

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Gao, Jie

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Daniel, Geoffrey

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Trävetenskap


Publikationens identifierare

DOI: https://doi.org/10.1515/hf-2014-0149

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/69739