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Biotechnology
  Year: 2019 | Volume: 18 | Issue: 2 | Page No.: 55-63
DOI: 10.3923/biotech.2019.55.63
 
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Utilization of Hydrolyzed UF-permeate Supplemented with Different Nitrogen Sources and Vitamins for Production of Baker's Yeast

H.A.Murad , Ebtesam Naeim Hosseany, Samy M. Abd Elhamid, Asmaa G. Abu-El Khair, H.H. Azzaz and Monera Omar Zahran

Abstract:
Background and Objectives: Huge amounts of permeate produced from ultrafiltration of milk for cheese processing were wasted and represent a serious environmental pollution problem. Utilization of such permeates for production of added value products as yeast biomass or baker's yeast would be profitable from the economical and the environmental point of view. The aim of this work was to study the impact of permeate supplemented with nitrogen sources and some vitamins as well as some other supplements as Tween 80 and phosphorus sources on the biomass yield of baker's yeast. Materials and Methods: The fermentation process was carried out in shack cultures using 250 mL conical flasks at 150 rpm and 30°C for 48 h incubation period. Different concentrations of nitrogen sources (organic and inorganic), biotin, pantothenic acid, m-inositol and Tween 80 were tested for their impact on the biomass yield of baker's yeast. Results: Peptone was the most suitable nitrogen source yielded 8.45 g followed by malt extract and soybean extract produced 8.30 and 8.25 g L1, respectively. Marked enhancing in biomass yield was exhibited when 0.1% of K2HPO4, 0.15 ppm of biotin, 2 ppm of pantothenic acid and concentration of 0.4 of m-inositol was supplemented to the growth medium. The low level of tween 80 had slightly positive effect on the yeast biomass production of baker's yeast. Conclusion: Enzymatically hydrolyzed permeate can be used successfully as substrate for production of baker's yeast.
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How to cite this article:

H.A.Murad , Ebtesam Naeim Hosseany, Samy M. Abd Elhamid, Asmaa G. Abu-El Khair, H.H. Azzaz and Monera Omar Zahran, 2019. Utilization of Hydrolyzed UF-permeate Supplemented with Different Nitrogen Sources and Vitamins for Production of Baker's Yeast. Biotechnology, 18: 55-63.

DOI: 10.3923/biotech.2019.55.63

URL: https://scialert.net/abstract/?doi=biotech.2019.55.63

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