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Research Journal of Microbiology

Year: 2018 | Volume: 13 | Issue: 1 | Page No.: 28-36

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Authors


Gamal  Mohamed Hamad

Gamal Mohamed Hamad

LiveDNA: 20.20321

Tarek Hosny Taha

Country: Egypt

Ali Mohammed Alshehri

Country: Saudi Arabia

Elsayed Elsayed Hafez

Country: Egypt

Keywords


  • fermentation medium
  • Glutathione production
  • food additives
  • Saccharomyces cerevisiae
  • Candida utilis
  • mutation
  • glutathione analogue
  • antioxidant
  • antibacterial capacity
Research Article

Enhancement of the Glutathione Production by Mutated Yeast Strains and its Potential as Food Supplement and Preservative

Gamal Mohamed Hamad Gamal  Mohamed Hamad's LiveDNA, Tarek Hosny Taha, Ali Mohammed Alshehri and Elsayed Elsayed Hafez
Background and Objective: Production of glutathione through mutated yeast strains and the possible usage as antibacterial agent against some food borne bacteria. Also, the antioxidant activity of the glutathione considered as another value when added as food supplement and food preservative. Moreover development of a commercial medium mostly consists of secondary products for the high yeast propagation and high amount of the produced glutathione. The aim of this study was producing a mutated strains of Saccharomyces cerevisiae (S. cerevisiae) and Candida utilis (C. utilis); have high capability to produce high amount of glutathione. Materials and Methods: In this regard, two yeast strains; Saccharomyces cerevisiae and Candida utilis were examined for glutathione production. For increasing the production of the two yeast strains; chemical mutation using Ethyl methanesulfonate (EMS) was approached and the mutated strains were selected on medium contains the glutathione analogue. Comparison of means was performed with Duncan's multiple range test using Costat software. Results: Only two mutated strains showed high ability to produce glutathione with 49 folds more than wild types (MG40/S.C/4 and MG20/C.U/5). Moreover, the antioxidant capacity for the two mutated strains was 9 folds increased compared to wild types. The fermentation process was performed to analyze different parameters and it was observed that the medium should contains molasses as carbon source, yeast extract as a nitrogen source, KH2PO4 of mineral and cysteine for amino acid. Conclusion: Glutathione could be used as antioxidant and antibacterial against wide range of human pathogens bacteria in addition used as food additive, supplement and food preservation to control human pathogenic bacteria.
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How to cite this article

Gamal Mohamed Hamad, Tarek Hosny Taha, Ali Mohammed Alshehri and Elsayed Elsayed Hafez, 2018. Enhancement of the Glutathione Production by Mutated Yeast Strains and its Potential as Food Supplement and Preservative. Research Journal of Microbiology, 13: 28-36.

URL: https://scialert.net/abstract/?doi=jm.2018.28.36

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