Arabinoxylan and Nanocellulose from a Kilogram-scale Extraction of Barley Husk
Artikel i vetenskaplig tidskrift, 2018

Processes of extracting hemicellulose from annual plants usually neglect the cellulose fraction. This study explored the possibility of obtaining both a hemicellulose and a cellulose fraction of sufficient quality for further use, with barley husks used as the raw material. An alkaline extraction was used to isolate the biopolymers by a process in which sodium dithionite replaced the traditional sodium borohydride as the reducing agent. The cellulose fraction was successfully transformed into nanocellulose by sulfuric acid hydrolysis, and the obtained hemicellulose (i.e., arabinoxylan) displayed carbohydrate composition characteristics similar to those previously reported in the literature for processes of extracting hemicellulose from barley husks. Using this methodology, both the cellulose and hemicellulose can be isolated in high quantities of dry material and used for transformation into new bio-based materials.

Alkali extraction

Barley husk

Cellulose nanocrystals

Arabinoxylan

Nanocellulose

Hemicellulose

Författare

Mikaela Börjesson

Chalmers, Kemi och kemiteknik, Tillämpad kemi

Linda Härdelin

Chalmers, Kemi och kemiteknik, Tillämpad kemi, Farmaceutisk teknologi

Filip Nylander

Chalmers, Kemi och kemiteknik, Kemi och biokemi, Fysikalisk kemi

Kristina Karlsson

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Anette Larsson

Anette Larsson Group

Gunnar Westman

Chalmers, Kemi och kemiteknik, Kemi och biokemi

BioResources

1930-2126 (ISSN)

Vol. 13 3 6201-6220

Ämneskategorier

Livsmedelsteknik

Kemiska processer

Polymerteknologi

Mer information

Senast uppdaterat

2018-08-31