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 |
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 - Funding information: This research project was supported by the German Federal Ministry of Economic Affairs and Energy (via AiF) and the FEI (Forschungskreis der Ernährungsindustrie e.V., Bonn), Project AiF 17170?N. The authors would like to thank Michael Kupetz, Technical University of Munich, Institute of Brewing and Beverage Technology, Research Group Beverage and Cereal Biotechnology, 85354 Freising, Germany for his assistance.
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 -