Ochsenfurt, Germany
Ochsenfurt, Germany

Time filter

Source Type

Risser P.,University of Hohenheim | Risser P.,Sudzucker AG Mannheim Ochsenfurt | Ebmeyer E.,KWS LOCHOW GmbH | Korzun V.,KWS LOCHOW GmbH | And 2 more authors.
Phytopathology | Year: 2011

Septoria tritici blotch (STB) is one of the most important leaf spot diseases in wheat worldwide. The goal of this study was to detect chromosomal regions for adult-plant resistance in large winter wheat populations to STB. Inoculation by two isolates with virulence to Stb6 and Stb15, both present in the parents, was performed and STB severity was visually scored plotwise as percent coverage of flag leaves with pycnidia-bearing lesions. 'Florett'/'Biscay' and 'Tuareg'/'Biscay', each comprising a cross of a resistant and a susceptible cultivar, with population sizes of 316 and 269 F 7:8 recombinant inbred lines, respectively, were phenotyped across four and five environments and mapped with amplified fragment length polymorphism, diversity array technology, and simple sequence repeat markers covering polymorphic regions of ≈1,340 centimorgans. Phenotypic data revealed significant (P < 0.01) genotypic differentiation for STB, heading date, and plant height. Entry-mean heritabilities (h 2) for STB were 0.73 for 'Florett'/'Biscay' and 0.38 for 'Tuareg'/'Biscay'. All correlations between STB and heading date as well as between STB and plant height were low (r = -0.13 to -0.20). In quantitative trait loci (QTL) analysis, nine and six QTL were found for STB ratings explaining, together, 55 and 51% of phenotypic variation in 'Florett'/'Biscay' and 'Tuareg'/'Biscay', respectively. Genotype-environment and QTL-environment interactions had a large impact. Two major QTL were detected consistently across environments on chromosomes 3B and 6D from 'Florett' and chromosomes 4B and 6B from 'Tuareg', each explaining 12 to 17% of normalized adjusted phenotypic variance. These results indicate that adult-plant resistance to STB in both mapping populations was of a quantitative nature.


Russ C.,University of Regensburg | Begli A.H.,Sudzucker ag Mannheim Ochsenfurt | Koenig B.,University of Regensburg
Synthetic Communications | Year: 2013

L-Sorbose 1 was converted to 5-hydroxymethylfurfural 8 in choline chloride melts in moderate yields. A simplified synthesis of sorbosylurea tetraacetate 4 in two steps using urea melts was performed, achieving good yields. Copyright © 2013, Taylor & Francis Group, LLC.


Potthast C.,Sudzucker AG Mannheim Ochsenfurt | Brinker S.,Pfeifer and Langen KG | Maier K.,Verein der Zuckerindustrie e.V.
Zuckerindustrie | Year: 2011

In 2010, German sugar companies1 in cooperation with the "Verein der Zuckerindustrie (VdZ)" collected data regarding feed materials. 67 samples of molasses, pressed-, dried-, molassed beet pulp, tops and tails from 20 German sugar factories were analysed regarding their composition and feed value. One aspect of the analysis was to review if the content of nutrients in the feed materials had changed over the last 20 years. Most data listed in feed tables originates from the 1980s and 1990s and therefore it needed to be validated. A systematic data sampling was carried out in order to establish comprehensive and statistically reliable values and to document changes in feed composition if necessary. It was later necessary to generate data for new parameters, which have been included in feed evaluation for the past few years including structural carbohydrates acid detergent fibre (ADF) and neutral detergent fibre (NDF). These fibres allow for an enhanced differentiation of the crude fibre and gas formation from the Hohenheim Feed Test (HFT). Calculated average values should be used in the standard calculation of feed rations, for developing compound feed formulations and as a database for new feed value tables. In most cases average values can be used for the calculation of Weender nutrients, minerals, structural carbohydrates and for gas formation. But the dry matter content, the total sugar content in molasses, the total sugar content in molassed beet pulp and the dry matter content in pressed beet pulp show a higher variability because of the production process. In these cases further information can be obtained from the manufacturer or the declarations in the shipping documents.


Peters S.,Sudzucker AG Mannheim Ochsenfurt | Rose T.,Sudzucker AG Mannheim Ochsenfurt | Moser M.,Sudzucker AG Mannheim Ochsenfurt
Topics in Current Chemistry | Year: 2010

Sucrose (α-d-glucopyranosyl-(1→2)-β-d-fructofuranoside) is an inexpensive chemical produced by sugar cane and sugar beet cultivation. Chemical and/or biochemical transformations convert it into highly valuable synthetic intermediates such as 5-hydroxymethylfurfural (HMF), bioethylene, 1,2-propylene glycol and levulinic acid. Sucrose can also be converted into biodegradable polymers such as polyesters and polyurethanes, as well as into novel carbohydrates such as isomaltulose, trehalulose, inulin, levan, Neo-amylose, and dextran, highly valuable additives for food and cosmetics and materials for separation and purification technologies. © 2010 Springer-Verlag Berlin Heidelberg.


De Bruijn J.M.,Sudzucker AG Mannheim Ochsenfurt
Zuckerindustrie | Year: 2012

An overview of the scientific career of the author in the sugar industry is given. His PhD study on the alkaline degradation of monosaccharides formed the basis of additional research efforts to better understand the behavior of sucrose and invert sugar under process conditions. NIRS analysis of process samples and the use of HPLC/HPIC techniques are examples for development of up-to-date, accurate, faster and/or more distinguishing methods. The technical quality of sugar beet has received attention since the recent reform of EU sugar regime. As one of the first the author has used dextranase to solve filtration problems in juice purification. Anaerobic digestion of beet pulp and raw juice concentration are briefly presented. Knowledge management (KM) is seen as the key tool to capture and transfer the knowledge as it is generated by R&D efforts.


Crop conditions - beet area - beet yield - sugar content - sugar yield - length of campaign - α-amino nitrogen content - technological data - limestone consumption - energy requirements - investments - industrial safety.


Dandar R.,Sudzucker AG Mannheim Ochsenfurt
Zuckerindustrie | Year: 2012

Beet growing - evolution of campaign - deteriorated beets - juice color - juice purity - limestone consumption - energy consumption - evaporator station - evaporating crystallizer - investments.


Schoenbeck I.,Leibniz University of Hanover | Graf A.M.,Sudzucker AG Mannheim Ochsenfurt | Leuthold M.,Sartorius Stedim Biotech GmbH | Pastor A.,Sartorius Stedim Biotech GmbH | And 2 more authors.
Journal of Biotechnology | Year: 2013

Potato fruit juice (PFJ) is a by-product from industrial starch production. It still contains several valuable components such as amino acids, minerals and proteins. An economic technology for the isolation and purification of different native potato proteins is the ion exchange chromatography, which can be performed either by classical bed chromatography or by membrane adsorption chromatography (MA-IEX). An already published MA-IEX process for the downstreaming of PFJ is based on the following steps: prefiltration/microfiltration, fractionation with MA-IEX, ultra-/diafiltration and finally drying. In order to further minimize process complexity and costs, new MA-IEX-modules were designed and tested in this research project to facilitate the processing of crude, particle-containing solutions using a tangential flow through the membranes. Modules with fleece polymer spacers and extruded polymer spacers, as well as different spacer channel sizes were tested for their binding capacities and their long-term stability. An optimized setup was found for the technical scale. Modules with extruded polymer spacers channel size 250μm show the highest binding capacities (anion exchanger approx. 0.34mg/cm2, cation exchanger approx. 0.16mg/cm2), while the modules with extruded polymer spacers channel size 480μm show the best long-term stability with 23 passes without intermediary cleaning. © 2013 Elsevier B.V.


De Bruijn J.M.,Sudzucker AG Mannheim Ochsenfurt
Zuckerindustrie | Year: 2012

Though the need of troubleshooting seems to occur less frequent in today's well controlled beet sugar factories, it shouldn't forget that many process control parameters and set points are related to underlying chemical processes. A proper understanding and capture of the science behind the sugar manufacturing process is invaluable to secure and support both the current and future operations in the beet sugar factories. This paper presents an overview of the main troubleshooting parameters and further details about likely causes and possible control measures. Examples are given of typical sugar extraction issues throughout processing, the origin of juice color and ways to limit color formation, as well as of lime salts, their relation to juice alkalinity and how this alkalinity can be influenced in processing. For troubleshooting of these 'sugar technology' related processing problems it is usually sufficient to focus on the following control parameters: juice pH value and alkalinity, temperature and retention time. And then it is 'just' a matter of applying the science to the process!


Nahle C.,Sudzucker AG Mannheim Ochsenfurt | Kunz M.,Sudzucker AG Mannheim Ochsenfurt
Zuckerindustrie | Year: 2012

This article deals with the numerical indicator water footprint. The definitions and terminology used in this indicator are analyzed in terms of their importance for water management. The individual components of the water footprint - blue, green, grey - are discussed in terms of their determination especially in relation to the aspects of evapotranspiration and fertilization. Using the example of sugar (beet and sugar production), it is shown that the determined water "consumption" with this indicator is only virtual and does not correspond to reality. Improvements in water management can only be achieved through key figures that can be actively influenced. This is very questionable in the case of the indicator water footprint.

Loading Sudzucker AG Mannheim Ochsenfurt collaborators
Loading Sudzucker AG Mannheim Ochsenfurt collaborators