Annelies Vroman

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AIMS To study the effect of different starvation conditions on the flocculation of an ale brewing yeast of Saccharomyces cerevisiae NCYC 1195. METHODS AND RESULTS Flocculation was assessed by a micro-flocculation technique (Soares and Mota 1997). Carbon-starved cells of a NewFlo phenotype strain did not lose flocculation during a 48 h period. Cells(More)
AIMS To identify the nutrients that can trigger the loss of flocculation under growth conditions in an ale-brewing strain, Saccharomyces cerevisiae NCYC 1195. METHODS AND RESULTS Flocculation was evaluated using the method of Soares, E.V. and Vroman, A. [Journal of Applied Microbiology (2003) 95, 325]. Yeast growth with metabolizable carbon sources(More)
A method to solve linear fuzzy equations with a symmetric matrix is proposed. Ignoring the symmetry leads to an overestimation of the solution. Our method to find the solution of a system of linear fuzzy equations takes the symmetry of the matrix into account and is based on parametric functions. It is a practical algorithm using parametric functions in(More)
In practice it is sometimes very difficult and in many cases even impossible to define correct and unique input data for structural mechanics applications. Fuzzy numbers can represent the uncertain input for those cases. As a consequence fuzzy arithmetic, based on the extension principle can be applied to solve finite element problems with uncertain(More)
The major objective of this study was to assess the antifungal activities of commercially available 'clean label' fermentates and their potential to replace the preservative function of sorbate and propionate in cake. This study was performed in two parts. In the first part of the study the inhibitory activities of selected fermentates - FA, FB, FC and FD -(More)
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