Details
| Original language | English |
|---|---|
| Pages (from-to) | 315-322 |
| Number of pages | 8 |
| Journal | Carbohydrate polymers |
| Volume | 184 |
| Early online date | 18 Dec 2017 |
| Publication status | Published - 15 Mar 2018 |
| Externally published | Yes |
Abstract
Brewer's spent grain (BSG) constitutes various valuable carbohydrates that may contribute to a healthy diet. These components may be obtained from BSG via hydrothermal treatment (HT), a procedure for dissolving water-inextricable carbohydrates. The objective of this study was to investigate HT as an environmentally friendly technology for extracting high-molecular-weight fiber with proven beneficial effects on human health. Cellulose, β-glucan, and arabinoxylan (AX) served as model substances and were subjected to auto-hydrolysis at different temperatures and reaction times. The results were evaluated in terms of structural and chemical characteristics. When the treatment temperature was increased, the original weight-average molar mass of AX (370 kDa) and β-glucan (248 kDa) decreased gradually (<10 kDa), and the molar mass distribution narrowed. Further investigations focused on the heat-induced formation and elimination of monosaccharides and undesirable by-products. The concentrations of by-products were successfully described by kinetic models that can be used to optimize the hydrolysis process.
Keywords
- Asymmetric flow-field-flow-fractionation, Brewer's spent grain, Hydrothermal treatment, Molar mass, Polysaccharides, Thermal degradation products
ASJC Scopus subject areas
- Chemistry(all)
- Organic Chemistry
- Materials Science(all)
- Polymers and Plastics
- Materials Science(all)
- Materials Chemistry
Sustainable Development Goals
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In: Carbohydrate polymers, Vol. 184, 15.03.2018, p. 315-322.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of hydrothermal treatment on the structural modification of spent grain specific carbohydrates and the formation of degradation products using model compounds
AU - Steiner, Julia
AU - Franke, Knut
AU - Kießling, Martina
AU - S., Fischer
AU - Töpfl, Stefan
AU - Heinz, Volker
AU - Becker, Thomas
N1 - © 2018 Elsevier Ltd. All rights reserved.
PY - 2018/3/15
Y1 - 2018/3/15
N2 - Brewer's spent grain (BSG) constitutes various valuable carbohydrates that may contribute to a healthy diet. These components may be obtained from BSG via hydrothermal treatment (HT), a procedure for dissolving water-inextricable carbohydrates. The objective of this study was to investigate HT as an environmentally friendly technology for extracting high-molecular-weight fiber with proven beneficial effects on human health. Cellulose, β-glucan, and arabinoxylan (AX) served as model substances and were subjected to auto-hydrolysis at different temperatures and reaction times. The results were evaluated in terms of structural and chemical characteristics. When the treatment temperature was increased, the original weight-average molar mass of AX (370 kDa) and β-glucan (248 kDa) decreased gradually (<10 kDa), and the molar mass distribution narrowed. Further investigations focused on the heat-induced formation and elimination of monosaccharides and undesirable by-products. The concentrations of by-products were successfully described by kinetic models that can be used to optimize the hydrolysis process.
AB - Brewer's spent grain (BSG) constitutes various valuable carbohydrates that may contribute to a healthy diet. These components may be obtained from BSG via hydrothermal treatment (HT), a procedure for dissolving water-inextricable carbohydrates. The objective of this study was to investigate HT as an environmentally friendly technology for extracting high-molecular-weight fiber with proven beneficial effects on human health. Cellulose, β-glucan, and arabinoxylan (AX) served as model substances and were subjected to auto-hydrolysis at different temperatures and reaction times. The results were evaluated in terms of structural and chemical characteristics. When the treatment temperature was increased, the original weight-average molar mass of AX (370 kDa) and β-glucan (248 kDa) decreased gradually (<10 kDa), and the molar mass distribution narrowed. Further investigations focused on the heat-induced formation and elimination of monosaccharides and undesirable by-products. The concentrations of by-products were successfully described by kinetic models that can be used to optimize the hydrolysis process.
KW - Asymmetric flow-field-flow-fractionation
KW - Brewer's spent grain
KW - Hydrothermal treatment
KW - Molar mass
KW - Polysaccharides
KW - Thermal degradation products
UR - http://www.scopus.com/inward/record.url?scp=85039980916&partnerID=8YFLogxK
U2 - 10.1016/j.carbpol.2017.12.038
DO - 10.1016/j.carbpol.2017.12.038
M3 - Article
VL - 184
SP - 315
EP - 322
JO - Carbohydrate polymers
JF - Carbohydrate polymers
SN - 0144-8617
ER -