Biorefinery Meets Biofermentation To Produce
Food Additives
Author(s)
B. Kilic & K. Bach
Abstract
The overall goal of the project was to transfer the concept of biorefinery to a biofermentation
process to produce e.g. nutrients, enzymes or biopolymers. The
feasibility of the strategy was proven in a fermentation process with industrial
wastewater containing phenol as a toxic pollutant. The degrading experiments
were done with native bacteria and fungi which have been selected according to
literature in consideration of degrading attitude, degrading rates and metabolic
properties. The second step was to answer the question of to what extent value
creation through fermentation of the selected organisms is possible. Questions on
how to carry out the procedure, the localisation of the product (intracellular or
extra cellular) and its traceability were also pursued. Possible products have been
analysed. As a result thereof an enzyme assay has been carried out to verify the
units of an extra cellular α-amylase. The third step was to improve the
fermentation process through optimisation of parameters like O2-transfer and
feeding strategies for the minimal substrate. It could be shown that produced
biomass could be doubled. Further experiments are necessary to provide for
optimised economical process and product utilisation.
Keywords: biorefinery, biofermentation, PHB, phenol.
Keywords
Keywords: biorefinery, biofermentation, PHB, phenol.
Related Book
Other papers in this volume
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