Oil production by Mortierella isabellina from whey treated with lactase.

Production and purification of lactase of Kluyveromyces fragilis from whey

Regio- and enantioselective microbial hydroxylation and evaluation of cytotoxic activity of β-cyclocitral-derived halolactones

Three β-cyclocitral-derived halolactones, which exhibit antifeedant activity towards storage product pests, were subjected to microbial transformation processes. Among the thirty tested strains of filamentous fungi and yeast, the most effective biocatalysts were Absidia cylindrospora AM336, Mortierella isabellina AM212 and Mortierella vinaceae AM149. As a result of regio- and enantioselective h...

Modeling growth, lipid accumulation and lipid turnover in submerged batch cultures of Umbelopsis isabellina

The production of lipids by oleaginous yeast and fungi becomes more important because these lipids can be used for biodiesel production. To understand the process of lipid production better, we developed a model for growth, lipid production and lipid turnover in submerged batch fermentation. This model describes three subsequent phases: exponential growth when both a C-source and an N-source ar...

Delimitation of Umbelopsis (Mucorales, Umbelopsidaceae fam. nov.) based on ITS sequence and RFLP data.

In a continuation of studies started by de Ruiter et al. (1993), all known species of the Mortierella isabellina-group (Micromucor/Umbelopsis clade of O'Donnell et al. 2001) and a few other Mucorales and species of Mortierella were investigated by RFLP (including ITS1, 5.8S, ITS2 and the 5' end of the large subunit rDNA gene) and ITS1 sequence analyses. This monophyletic group is unrelated to M...

Modeling lipid accumulation in oleaginous fungi in chemostat cultures: I. Development and validation of a chemostat model for Umbelopsis isabellina

Lipid-accumulating fungi may be able to produce biodiesel precursors from agricultural wastes. As a first step in understanding and evaluating their potential, a mathematical model was developed to describe growth, lipid accumulation and substrate consumption of the oleaginous fungus Umbelopsis isabellina (also known as Mortierella isabellina) in submerged chemostat cultures. Key points of the ...