Mechanisms of ferulic acid conversions to vanillic acid and guaiacol by Rhodotorula rubra.

Bioconversion of Ferulic Acid into Vanillic

Degradation of vanillic acid and production of guaiacol by microorganisms isolated from cork samples.

The presence of guaiacol in cork stoppers is responsible for some cases of cork taint causing unpleasant alterations to wine. We have performed a characterization of the cork-associated microbiota by isolating 55 different microorganisms: eight yeast, 14 filamentous fungi or molds, 13 actinomycetes and 20 non-filamentous bacteria. A screening for degradation of vanillic acid and guaiacol produc...

Extraction of Ferulic Acid from Agro-industrial Wastes and Evaluation of Bioconversion of Ferulic Acid to Vanillin by Streptomyces Setonii

Several agro-industrial wastes (as chestnut and pistachio shells, grass, leaf fruit, vine leaf, and, red and white grape stems) were evaluated to ferulic acid extraction. The chemical analysis of these raw materials shows a high content of xylan in pistachio shells (33%), following the biorefinery concept, this fraction can be used in xylitol manufacture. The lignocellulosic materials were subm...

Synthesis and coating of nanosilver by vanillic acid and its effects on Dunaliella salina Teod.

Plant phenolics have high reducing capacity which can be exploited in the synthesis of nanomaterials. In the present study, phytoreductant vanillic acid is used to produce and coat silver nanoparticles. The effects of Ag nanoparticles on the unicellular green algae D. Salina were then investigated. Under optimum  pH and temperature, silver ions were reduced to silver metal by vanillic acid. The...

Torularhodin Biosynthesis and Extraction by Yeast Cells of Rhodotorula Rubra

The paper presents the research work done to study the discontinuous bioprocess for the intracellular carotenoidic pigment torularhodin formation with the yeast Rhodotorula rubra ICCF 209. The growth and carotenoid biosynthesis of the yeast Rhodotorula rubra was studied by cultivation in 3.7 L Bioengineering AG lab bioreactor with mechanical stirring at an air flow rate of 200 L/h and agitation...