Determination of lignin content in pressurised hot water extracts using different lignin determination methods

B3 Non-refereed conference proceedings


Internal Authors/Editors


Publication Details

List of Authors: Risto Korpinen, Andrey Pranovich, Stefan Willför
Editors: Valtteri Mäkelä
Place: Helsinki
Publication year: 2012
Publisher: University of Helsinki
Book title: EWLP 2012 : 12th European Workshop on Lignocellulosic and Pulp : Proceedings
Start page: 322
End page: 325
ISBN: 978-952-10-8187-3


Abstract

Different conventional lignin determination methods have been applied to hemicellulose-rich extracts from spruce and birch obtained by pressurised hot-water extraction and subsequent membrane ultrafiltration. Mass balances of the overall processes were calculated in respect to dry solids content and lignin content. The different lignin determination methods were evaluated according to the lignin mass balances obtained by the applied methods. The amount of lignin in the raw extracts and filtrates varied significantly depending on the used method. Nevertheless, the
lignin mass balance calculations yielded similar results in general.

Last updated on 2019-11-12 at 03:44