OPTIRas is een beslissingsondersteunend systeem voor de zetmeelaardappelteelt in Nederland en Duitsland. Het adviseert telers rassenkeuze op basis van nematoden en wratziekte resistentie en toleranties, het berekent plantafstand en voorspelt bewaarverliezen op basis van rooibeschadiging.

Overzicht van de resultaten van het Agrobiokon-EDR project. Deze resultaten zijn ten aanzien van stikstof en kalium bemesting, rooibeschadiging zetmeelaardappelen, bewaartechniek, quarantaine ziekten (nematoden en wratziekte) en het OPTIRas beslissingsondersteunend systeem. Nieuwe vormen van kennisoverdracht …

Redesigning IT systems for specific user groups encompasses a lot of effort with respect to analysing and understanding user behaviour. The goal of this paper is to provide insights into patterns of behaviour of agricultural users, during the usage of a decision support system called OPTIRas (TM). This …

Rassenkeuze is een jaarlijks terugkerende beslissing voor zetmeelaardappeltelers. Hulp bij deze rassenkeuze is door meer dan 80% van de telers als zeer belangrijk aangegeven in de AGROBIOKON-enquete over Kennisoverdracht. OPTIRas is een hulpmiddel om het juiste ras voor uw doeleinden en percelen te selecteren. …

Amylomaltases or D-enzyme (4-α-glucanotransferases; E.C. 2.4.1.25) are carbohydrate-active enzymes that catalyze the transfer of glucan units from one α-glucan to another in a disproportionation reaction. These enzymes are involved in starch metabolism in plants or maltose/glycogen metabolism in many …

Granular 2-nitropropyl potato starch was synthesized by reaction with 2-nitropropyl acetate in an aqueous suspension. Nitroalkylation occurs preferentially with the amylose fraction of potato starch, as was confirmed by leaching experiments and digestion of the modified starch with α-amylase. The 2-nitropropyl …

Granular starch was cross-linked with 1,3-di-O-acetyl-2-nitro-1,3-propanediol (1), 1,3-di-O-pivaloyl-2-nitro-1,3-propanediol (2), 2-nitro-3-O-pivaloyl-1-propene-3-ol (3), 1,3-di-O-acetyl-aci-2-nitro-1,3-propanediol (4), 1,3-di-O-pivaloyl-aci-2-nitro-1,3-propanediol (5) and 1,6-di-O-acetyl-2,5-dinitro-1,6-hexanediol …

The title uronates were prepared by 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO) catalysed sodium hypochlorite oxidation of α- and β-D-glucopyranosylphosphate (α-/β-Glc-1-P) and α-D-glucopyranosyl fluoride (α-Glc-1-F). Quantitative recovery of the TEMPO catalyst was achieved by azeotropic distillation …

A bacterium belonging to the Bacillus firmus/lentus-complex and capable of growth on native potato starch was isolated from sludge of a pilot plant unit for potato-starch production. Utilization of a crude enzyme preparation obtained from the culture fluid after growth of the microorganism on native …