Dr. Khaled El-Sayed Abo-El-Asaad El-Gayar
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Dr. Khaled El-Sayed Abo-El-Asaad El-Gayar

Assistant Professor
Jazan University, Saudi Arabia

Highest Degree
Ph.D. in Microbiology from Mansoura University, Egypt

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Biography

Dr. Khaled Elsayed El-Gayar is an Assisstant Professer of Biology department, Faculty of Sciences, Jazan University KSA. Previously, he was Manager of Diagnostic administration in Egy Blood ((One company of the holding company of bio-products and vaccines); Vacsera, Egypt Academic. Dr. Khaled has received his Ph.D. in Microbiology, Mansoura University, Egypt, 2007. He has done his M.S.c. in the department of Bioscience and Technology, Institute of Graduate Studies and Research, Alexandria University, Egypt, 2001.

Area of Interest:

Biomedical Sciences
100%
Molecular Genetics
62%
Microbiology
90%
Bioscience
75%
Fermentation Technology
55%

Research Publications in Numbers

Books
0
Chapters
0
Articles
0
Abstracts
0

Selected Publications

  1. Al-Thobaiti, B.M., E. Abada and K. El-Gayar, 2021. Biochemical and molecular characterization of proteolytic bacterial strains isolated from Jazan region, KSA with the application as an antibacterial agent. Mod. J. Microb. Biol., Vol. 3. 10.25259/MJMB_1_2021.
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  2. Ghazouani, A., K. El-Gayar and E. Abada, 2020. Molecular characterization of gene encoding halo tolerant amylase of Bacillus paralicheniformis isolated from Jazan region. Mod. J. Microb. Biol., Vol. 2. 10.25259/MJMB_2_2020.
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  3. Essa, A.M., K.E. El-Gayar and R.S. Shehata, 2020. Antagonistic impact of lavender and cranberry essential oils against Xanthomonas campestris pv. vesicatoria. Res. J. Microbiol., 15: 42-50.
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  4. El-Gayar, K.E., A.M. Essa and E.A. Abada, 2020. Whey fermentation for protease production using Bacillus thuringiensis Isolated from Mangrove Rhizosphere Soil in Jazan, Saudi Arabia. Pol. J. Environ. Stud., 29: 2167-2176.
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  5. Ibrahim MA, Bekhit M, Neveen Hassan, Refaat M and El-Akkad T 2019. C-banding karyotype and molecular characterization on cumin, caraway and coriander. Mol. Biol. Open Access, Vol. 8. .
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  6. El-Shabasy, A.E. and K.E.S. El-Gaya, 2019. Comparative studies between six taxa of Amaranthaceae based on their effects on some pathogenic bacterial isolates and morphological characters. Egypt. J. Exp. Biol. (Bot.), 15: 341-351.
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  7. Essa, A.M., K.E. El-Gayar, M.N. Awad, M. Al-Shaeri, M.A. Salam and H.M. Alnashiri, 2018. Bacterial purification of sewage wastewater effluents and its influence on germination indices of Vigna radiate and Hordeum vulgare. Pol. J. Environ. Stud. (In Press). .
  8. Essa, A.M., E. Khaled, N. Mohamed N. Awad and M. Al-Shaeri et al., 2018. Bacterial purification of sewage wastewater effluents and its influence on germination indices of Vigna radiate and Hordeum vulgare. Pol. J. Environ. Stud., 28: 3145-3153.
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  9. Essa , A.M. and K.E. El-Gayar, 2018. Characterization of bacteria isolated from domestic wastewater in Jazan, Saudi Arabia. Egypt. J. Exp. Biol. (Bot.), 14: 331-338.
  10. Abada, E.A., Y.S. Masrahi, M. Al-Abboud, H.M. Alnashiri and K.E. El-Gayar, 2018. Bioethanol production with cellulase enzyme from bacillus cereus isolated from sesame seed residue from the jazan region. Bioresources, 13: 3832-3845.
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  11. Abada, E.A., Y.S. Masrahi, M. Al-Abboud, H.M. Alnashiri and K.E. El-Gayar, 2018. Bioethanol production with cellulase enzyme from Bacillus cereus isolated from sesame seed residue from the Jazan region. BioResources, 13: 3832-3845.
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  12. El-Gayar, K.E., M.A. Al Abboud and A.M. Essa, 2017. Characterization of thermophilic bacteria isolated from two hot springs in Jazan, Saudi Arabia. J. Pure Applied Microbiol., 11: 743-753.
  13. El-Gayar, K.E., 2017. Isolation, identification and characterization of Bacillus subtilis from tap water. Asian J. Microbiol. Biotechnol. Environ. Sci., 19: 817-830.
  14. Omran, S.M., Z.K. Mohamed, Z. Zakaria, Y.M. Abd-Elmonem and K.E. El Gayar, 2016. Association study of single nucleotide polymorphism of human Toll like receptor 9 and susceptibility to pulmonary tuberculosis in Egyptian population. Afr. J. Microbiol. Res., 10: 717-724.
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  15. El-Gayar, K., 2015. Principles of recombinant protein production, extraction and purification from bacterial strains. Int. J. Microbiol. Allied Sci., 2: 18-33.
  16. Mohamed, A.S., A.I. Amin, H.A. Abdelrahman, S.I. Fathalla, K.E. Elgayar, N.M. Attallah and A.S. Abdel-Hamed, 2014. Modified immunodiagnostic assays for detection of tuberculosis infection. Inventi Rapid: Infection, 1: 1-9.
  17. Elgayar, K.E., I.M.A. El Kholy, Y.M.A. Elmonem and H.M. Abushady, 2013. Application of some biotechnological techniques for diagnosis of Salmonella typhi. Int. J. Curr. Res., 5: 2037-2042.
  18. Mosaad, A.A., A.S. Abdel-Hamed, S.I. Fathalla, A.A. Ghazy and S. Elballal et al., 2012. Sensitive and specific diagnostic assay for detection of tuberculosis in cattle. Global Vet., 8: 555-564.
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  19. El-Gayar, K.E., T.I. Zaghloul, M.A. Haroun and H.M. Saeed, 2012. Purification of alkaline protease from hydrolyzed chicken feather waste using recombinant B. subtilis strain. Scient. J. King Faisal Univ. (Basic Applied Sci.), 13: 139-151.
  20. El-Gayar, K.E., M.A. Ibrahim, S.H. Mohamed, Z. Zakaria and A.S.A. Alhameed, 2012. Application of extracted peroxidase enzyme from turnip roots (Brassica napus) in clinical diagnostic kit. Int. J. Curr. Res. Rev., 4: 17-22.
  21. Zaghloul, T.I., M.A. Haroun, K. El-Gayar and A. Abdelal, 2004. Recycling of keratin-containing materials (chicken feather) through genetically engineered bacteria. Polymer-Plastics Technol. Eng., 43: 1589-1599.
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