Open AccessPre-evaporation of Ethanol as an Effective Method to Improve Single Cell Protein (SCP) Production from Date Palm Residue by Saccharomyces Cerevisiae
Author(s) -
Salah N. Farhan,
Walaa Abid Mahmood,
Ali Hussein Ali Godeib
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1076/1/012029
Subject(s) - fermentation , single cell protein , yeast , saccharomyces cerevisiae , food science , bioreactor , sugar , microorganism , ethanol fuel , chemistry , bacteria , biology , biochemistry , botany , genetics
Unicellular proteins or Single cell proteins (SCP) are proteins that can be used for human foods and animal feed. Their source is microorganisms that grow unicellular, such as yeast, bacteria, mold, and algae. There are many carbon sources, which can be used in the production of a single cell protein (SCP). Many processes have been developed to produce SCP at a low cost. However, in all these processes, productivity was low. The current study aims at using a natural material (turnip extract) to increase the extraction of sugar from palm date residues required for yeast (Saccharomyces cerevisiae) fermentation. As well as the use of a vacuum pump to remove ethanol from fermentation broth at a certain time interval to increase the growth of the yeast and prevent its inhibition. From the study, the single-cell protein was increased from 30 gm to range between 60-90 gm, while the time of fermentation reduced from 24hr to 9 hr. The main fermentation experiments were performed using a 2 litter bioreactor at a moderate temperature 30 °C and pH value of 6. The use of residues, in addition to the production of single-cell proteins, allows to reduce of environmental pollution.