Abstract:
The present paper has as objective studies and researches regarding
the multiplication of yeasts on nutritive media in order to produce single cell
protein which can be used as food and feed source. In this regard there were
isolated and selected several yeast strains from Saccharomyces genera, that
were forward been tested, studied and verified under laboratory and pilot
conditions, having as objective to identify yeast strains with optimum activity
and high multiplication capacity. Using micro-organisms from
Saccharomyces genera in order to obtain single cell protein presents
advantages such as: - the high content in microbial protein having a similar
amino acids profile with this of the animal or vegetal protein; - through the
selection the strains having the most appropriate characteristics that we
intend to obtain could be performed; - the powerful growth and high biomass
resulted; - the micro-organisms can use as carbon organic source a huge
range of raw materials, mainly wastes or by-products resulted from other
industries. Verification of the yeast on pilot scale was performed taking into
account the industrial process, using as culture medium sugarbeet molasses.
Molasses represents one of the main raw materials used for obtaining single
cell proteins. The usage of molasses as raw material is convenient mainly
because of it’s low cost production prices and easy access. The researches
will go on in the order to settle the culture media for the multiplication of the
selected yeast strains as regards the optimal composition through the
microelements, vitamins and bios factors, to compensate the lack of nutritive
factors from the processed raw materials
