Skip to content
R

Rania F. Ahmed

Publications (4)

Optimization of Some Nutritional Conditions and α- Ketoglutaric Acid Concentration as PGA Precursor for Maximizing PGA Production from Bacillus sp. 42 and Bacillus sonorensis 44

Rania F. Ahmed · Microbiology Research Journal International · 2020

Poly gamma glutamic acid is a biodegradable, water soluble and non-toxic edible biopolymer, PGA has nylon back bone similar structure and expressed as bio-nylon. Various bacterial strains produced PGA on of them Bacillus sp. such as B. subtilis, B. lichanformans and B. sonorensis...

Open access Research Article 10.9734/mrji/2020/v30i230196

Isolation, Identification and Evaluation of Egyptian Bacillus sp. Isolates for Producing Poly-γ-glutamic Acid

Rania F. Ahmed & Hala Badr Khalil · Journal of Advances in Microbiology · 2020

Poly-γ-glutamic acid (γ-PGA) is a non-toxic, biodegradable, and water-soluble polymer secreted from different microbes. We isolated forty-nine Bacillus spp. isolates generating PGA from the soil of different Egyptian regions. A total of 18% of these isolates were found to highly...

Open access Research Article 10.9734/jamb/2019/v19i430203

Using of Some Agro-industrial Wastes for Improving Carotenoids Production from Yeast Rhodotorula glutinis 32 and Bacteria Erwinia uredovora DSMZ 30080

Gehan F. Galal & Rania F. Ahmed · Microbiology Research Journal International · 2020

Some agro-industrial wastes such as clarified cane molasses, high test molasses, sweet whey, potato starch and corn steep liquor were tested as carbon sources or nitrogen source for growth and carotenoid accumulation using bacteria Erwinia uredovora DSMZ 30080 and yeast Rhodotoru...

Open access Research Article 10.9734/mrji/2020/v30i130186

Characterization and Application of Aspergillus tubingensis USMI03 RPf10 Fermented Solution as a Nutrient Source for Microbial Growth

Shimaa A. Amin, Hemmat M. Abdelhady, Khadiga A. Abou-taleb, Zahra H. Tayeb & Rania F. Ahmed · South Asian Journal of Research in Microbiology · 2020

The fermented solution of this strain contains the highest concentration of citric acid, indole acetic acid (IAA) and elements as well as phosphatase activity. Using the Aspergillus tubingensis USMI03 RPf10 fermented solution as a medium led to decrease in the growth rate of test...

Open access Research Article 10.9734/sajrm/2020/v6i230144