Heat extraction of corn fiber hemicellulose
(2007) In Applied Biochemistry and Biotechnology 137. p.253-265- Abstract
- Water-soluble hemicellulose was extracted from corn fiber with microwave-assisted heat treatment. The effects of treatment temperature and initial pH of the aqueous extraction media were investigated regarding hemicellulose recovery and molecular mass of the isolated polysaccharides. In treatments carried out at neutral pH (simple water extraction), it has been demonstrated that hemicellulose recovery could be increased by applying higher treatment temperatures. However, the molecular weight of isolated hemicellulose gets significantly lower. For example, 10% of the raw materials' xylan was extracted at 160 degrees C and about 30% recovery was reached at 210 degrees C. However, the molecular mass of the isolated polysaccharide at 210... (More)
- Water-soluble hemicellulose was extracted from corn fiber with microwave-assisted heat treatment. The effects of treatment temperature and initial pH of the aqueous extraction media were investigated regarding hemicellulose recovery and molecular mass of the isolated polysaccharides. In treatments carried out at neutral pH (simple water extraction), it has been demonstrated that hemicellulose recovery could be increased by applying higher treatment temperatures. However, the molecular weight of isolated hemicellulose gets significantly lower. For example, 10% of the raw materials' xylan was extracted at 160 degrees C and about 30% recovery was reached at 210 degrees C. However, the molecular mass of the isolated polysaccharide at 210 degrees C (5.82 x 10(4)) was about half of that measured at 160 degrees C (1.37 x 10(5)). Reducing the pH with sulfuric acid resulted in shorter polymer chains (1.7 x 10(4)) and lower hemicellulose yields (2.2%). Application of sodium hydroxide in the treatment showed that, compared with acid, considerably higher yields (11%) with longer polysaccharide chains (1.3 x 10(5)) could be obtained. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/657960
- author
- Benko, Zsuzsa ; Andersson, Alexandra LU ; Szengyel, Zsolt ; Gaspar, Melinda ; Reczey, Kati and Stålbrand, Henrik LU
- organization
- publishing date
- 2007
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- size exclusion chromatography, fractionation, microwave-assisted, alkaline extraction, carbohydrate analysis, weight-average molecular, weight, maize
- in
- Applied Biochemistry and Biotechnology
- volume
- 137
- pages
- 253 - 265
- publisher
- Humana Press
- external identifiers
-
- wos:000246616900024
- scopus:34347220939
- ISSN
- 1559-0291
- DOI
- 10.1007/s12010-007-9056-0
- language
- English
- LU publication?
- yes
- id
- 04359a91-c858-4629-935a-e27ca110c107 (old id 657960)
- date added to LUP
- 2016-04-01 11:35:11
- date last changed
- 2022-04-28 17:06:04
@article{04359a91-c858-4629-935a-e27ca110c107,
abstract = {{Water-soluble hemicellulose was extracted from corn fiber with microwave-assisted heat treatment. The effects of treatment temperature and initial pH of the aqueous extraction media were investigated regarding hemicellulose recovery and molecular mass of the isolated polysaccharides. In treatments carried out at neutral pH (simple water extraction), it has been demonstrated that hemicellulose recovery could be increased by applying higher treatment temperatures. However, the molecular weight of isolated hemicellulose gets significantly lower. For example, 10% of the raw materials' xylan was extracted at 160 degrees C and about 30% recovery was reached at 210 degrees C. However, the molecular mass of the isolated polysaccharide at 210 degrees C (5.82 x 10(4)) was about half of that measured at 160 degrees C (1.37 x 10(5)). Reducing the pH with sulfuric acid resulted in shorter polymer chains (1.7 x 10(4)) and lower hemicellulose yields (2.2%). Application of sodium hydroxide in the treatment showed that, compared with acid, considerably higher yields (11%) with longer polysaccharide chains (1.3 x 10(5)) could be obtained.}},
author = {{Benko, Zsuzsa and Andersson, Alexandra and Szengyel, Zsolt and Gaspar, Melinda and Reczey, Kati and Stålbrand, Henrik}},
issn = {{1559-0291}},
keywords = {{size exclusion chromatography; fractionation; microwave-assisted; alkaline extraction; carbohydrate analysis; weight-average molecular; weight; maize}},
language = {{eng}},
pages = {{253--265}},
publisher = {{Humana Press}},
series = {{Applied Biochemistry and Biotechnology}},
title = {{Heat extraction of corn fiber hemicellulose}},
url = {{http://dx.doi.org/10.1007/s12010-007-9056-0}},
doi = {{10.1007/s12010-007-9056-0}},
volume = {{137}},
year = {{2007}},
}