Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 102-108 |
| Journal | Carbohydrate Polymers |
| Volume | 93 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
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Keywords
- Dissolving pulp
- endoglucanase
- enzyme treatment
- oligosaccharide
- xylan
- xylanase
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Enzyme-aided alkaline extraction of oligosaccharides and polymeric xylan from hardwood kraft pulp. / Hakala, Terhi (Corresponding Author); Liitiä, Tiina; Suurnäkki, Anna.
In: Carbohydrate Polymers, Vol. 93, No. 1, 2013, p. 102-108.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - Enzyme-aided alkaline extraction of oligosaccharides and polymeric xylan from hardwood kraft pulp
AU - Hakala, Terhi
AU - Liitiä, Tiina
AU - Suurnäkki, Anna
PY - 2013
Y1 - 2013
N2 - In this paper we describe the effect of enzyme treatments on the production of polymeric xylan, oligosaccharides and hemicellulose lean pulp by alkaline extraction of bleached hardwood kraft pulp. Enzyme treatments were carried out before one or in between two subsequent alkaline extractions by purified Trichoderma reesei xylanase and endoglucanase II (Cel 5a) as well as by a commercial monocomponent endoglucanase (FibreCareR). Without enzyme pre-treatment 61% and 7% of the pulp xylan was extracted in high purity in the first and second alkaline stage, respectively. Higher molecular mass xylan was obtained in the second than in the first alkaline extraction. Xylanase treatment before alkaline extraction hydrolyzed up to 12% of xylan to xylooligosaccharides. According to our results, preparation of polymeric xylan, and/or oligosaccharides as well as hemicellulose lean pulp with cellulose content of 93-94%, is possible by enzyme-aided alkaline extraction process
AB - In this paper we describe the effect of enzyme treatments on the production of polymeric xylan, oligosaccharides and hemicellulose lean pulp by alkaline extraction of bleached hardwood kraft pulp. Enzyme treatments were carried out before one or in between two subsequent alkaline extractions by purified Trichoderma reesei xylanase and endoglucanase II (Cel 5a) as well as by a commercial monocomponent endoglucanase (FibreCareR). Without enzyme pre-treatment 61% and 7% of the pulp xylan was extracted in high purity in the first and second alkaline stage, respectively. Higher molecular mass xylan was obtained in the second than in the first alkaline extraction. Xylanase treatment before alkaline extraction hydrolyzed up to 12% of xylan to xylooligosaccharides. According to our results, preparation of polymeric xylan, and/or oligosaccharides as well as hemicellulose lean pulp with cellulose content of 93-94%, is possible by enzyme-aided alkaline extraction process
KW - Dissolving pulp
KW - endoglucanase
KW - enzyme treatment
KW - oligosaccharide
KW - xylan
KW - xylanase
U2 - 10.1016/j.carbpol.2012.05.013
DO - 10.1016/j.carbpol.2012.05.013
M3 - Article
VL - 93
SP - 102
EP - 108
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
IS - 1
ER -