Production of single cell protein from some date by-Products

  1. E.Mehani1, M. A.Sorour1; B.R. Ramadan2; and Naglaa Abdel-Sabour3

1Food Sci. & Nut.Dept., Fac. of Agric. Sohag University, Egypt.

2Food Sci.& Tech. Dept., Fac. of Agric. Assiut University, Egypt

3Food Sci. & Dairy Dept., Fac. of Agric. South Valley Univ., Egypt



The single cell protein produced has a good source of essential amino acids. This study aimed to utilize some date by-products such as date flesh to produce single cell protein.  The flesh of dates from unknown cultivars and three varieties are used to produce a single cell protein by Saccharomyces cerevisiae ATCC64712 under different conditions (different sugar concentrations in the extract media, different temperature and different pH). The results showed that the optimum production of the biomass (42.85g/l) was produced from date extracts media at 18% sugar, 30˚C and pH values 4.5. To reduce the nucleic acid content in the biomass, heat shock was used. The effect of heat shock on protein content and nucleic acids percentage for studied yeast strain was 75.83%,and the maximum reduction of nucleic acids was observed at pH4 and 60°C for 30 sec with 20.88% loss of its protein content. The present study provides evidence that the date by-product is a great source for single cell protein that can be used in variable fermentations.

Key words:

Single cell protein, date by-products, Saccharomyces cerevisiae ATCC64712, amino acids,