Now showing1 - 2 of 2
- Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Recovery of prebiotic carbohydrates from side streams of biorefineries exemplified by fructans and pentosans from bioethanol thin stillage(2023-06-07); One of the main challenges in existing biorefineries is the insufficient product diversification. The valorization of side streams, here exemplified by bioethanol stillage, may widen the product portfolio and thereby may improve economic efficiency of bioethanol production plants. Valuable carbohydrates, namely fructans and pentosans, can be found in bioethanol stillage. Fructans are long-chain carbohydrates consisting almost exclusively of fructose monomers (C6-sugars), while pentosans are a group of carbohydrates, mainly built from the C5-sugars arabinose and xylose. Both types of carbohydrates belong to the group of prebiotics making them especially interesting for food and feed applications. Therefore, prebiotics from stillage offer the potential for a provision of value food and feed components besides fuel production. Currently most literature deals with Dried Distiller’s Grains (with solubles) (DDG(S)) in order to obtain proteins or pentosans. However, this side stream has already competitive utilization paths such as animal feed. Against this background, thin stillage is especially interesting as competitive utilizations hardly exist. The main objective of this research project is to develop an integrated process for the production of prebiotic carbohydrates from bioethanol thin stillage. Within this work, a new process concept for the production of prebiotics, in particular pentosans and (partly fructans), is investigated and assessed. Against this background, this work contributes to a holistic utilization of biomass and to the idea of a bioeconomic approach. The results show only small mounts of fructans (about 0.5 %DM) but significant amounts of pentosans to present in thin stillage (about 15 to 20 %DM), mainly allocated in the liquid phase. By means of chemical, biochemical and hydrothermal treatments pentosans from the solid phase can be dissolved as well allowing for their subsequent purification. Based hereon, a promising process pathway for the production of especially pentosans has been identified. However, further research is required for the investigation of such purification step(s).Publicationtype: Conference Poster22 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: with files , Plant-based fructans for increased animal welfare: provision processes and remaining challengesFructans are carbohydrates consisting of fructose monomers linked by β-2,1- and/or β-2,6-glycosidic bonds with linear or branched structure. These carbohydrates belong to the group of prebiotic dietary fibre with health-promoting potential for humans and mammals due to their indigestibility and selective stimulation of microorganisms in the gastrointestinal tract. This makes fructans interesting mainly for healthy food as well as animal feed applications. As a consequence of a growing public awareness for animal welfare, dietary fibre and thus fructans move into the focus as a fibre-rich feeding improving not only animals’ health but also their well-being. Against this background, this paper summarises the known effects of fructans focusing on pigs and highlights the state of the art in fructan production processes from plant material as well as selected current research lines. Additionally, an attempt is made to assess the potential of European fructan production for an application as animal feed. Based on this, challenges in the field of fructan production are addressed and alternative substrates for fructans are discussed and pointed out.Publicationtype: Review ArticleScopus© Citations 7 121 139