Amira A. Gamal

ORCID: 0000-0003-0315-2029
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Research Areas
  • Enzyme Production and Characterization
  • Microbial Metabolites in Food Biotechnology
  • Radiation Shielding Materials Analysis
  • Biofuel production and bioconversion
  • Enzyme Catalysis and Immobilization
  • Polysaccharides and Plant Cell Walls
  • Glass properties and applications
  • Bee Products Chemical Analysis
  • Advanced X-ray and CT Imaging
  • Nuclear materials and radiation effects
  • Nanoparticles: synthesis and applications
  • Phytoestrogen effects and research
  • Food composition and properties
  • Pharmacological Effects of Natural Compounds
  • Steroid Chemistry and Biochemistry
  • Polysaccharides Composition and Applications
  • Nuclear Physics and Applications
  • Gout, Hyperuricemia, Uric Acid
  • Seaweed-derived Bioactive Compounds
  • Occupational and environmental lung diseases
  • Moringa oleifera research and applications
  • Porphyrin Metabolism and Disorders
  • Silymarin and Mushroom Poisoning
  • Crystallization and Solubility Studies
  • Optical and Acousto-Optic Technologies

National Research Centre
2015-2025

Menoufia University
2020-2023

The aim of the present study was to prepare and characterize nanocomposite films improve treatment skin wounds by applying film as a bandage. To modify chitosan (Cs) nanocomposites, mixture between titanium dioxide nanoparticles (TiO2 NPs) performed at different concentrations (2, 5, 10 15 wt%) oleic acid (OA). thin were prepared using casting method. (Cs, Cs/TiO2 NPs, Cs/OA Cs/OA/TiO2 described water absorption (swelling study) biological degradation. Physico-chemical characterizations Cs,...

10.1002/jbm.a.37019 article EN Journal of Biomedical Materials Research Part A 2020-06-04

<title>Abstract</title> There has been a growing interest in functional foods recent years to improve health and boost immunity, particularly since the COVID-19 pandemic, which reflects their significant role promoting preventing various diseases, especially metabolic disorders. This study investigated antimicrobial, antioxidant, anticoagulant, prebiotic activities of six different oils: <italic>Calotropis procera</italic> oil (CPO), Chia seed (CSO), Moringa (MO), Neem (NO), Black (BSO),...

10.21203/rs.3.rs-6081120/v1 preprint EN cc-by Research Square (Research Square) 2025-03-27

Abstract Enzyme cost and stability are the main problems facing industrial applications. Consequently, Aspergillus niger NRC1ami was isolated from rotten orange recorded a promising pectinase activity (13.8 U/ml). The enzyme optimized using citrus peel pectin as sole carbon source (40 It purified by two steps purifications 632 purification folds. pure showed 14.7% carbohydrate content consists of 15 amino acids. Glutamic acid major (22%) followed leucine (10.67%) threonine minor (2.70%). A....

10.1007/s12649-022-01838-2 article EN cc-by Waste and Biomass Valorization 2022-06-23

Continue to hypothesize that honey is a storehouse of beneficial bacteria, and the majority these isolates are levansucrase producers. Accordingly, ten bacterial strains were isolated from different sources. Four had highest production levan yield identified by partial sequencing 16S rRNA gene as Achromobacter sp. (10A), Bacillus paralicheniformis (2M), subtilis (9A), paranthracis (13M). The cytotoxicity selected showed negative blood hemolysis. Also, they sensitive tested antibiotics...

10.1007/s11274-022-03259-8 article EN cc-by World Journal of Microbiology and Biotechnology 2022-05-04

Background and objective Fermented soy products were regarded as healthy foods hence are considered an essential part of the diet. Lactic acid bacteria isolated from naturally fermented Egyptian food screened for their ability to produce β-glucosidase, isoflavone aglycone, phenolics, antioxidant activity during formation yogurt. The present research is a preliminary attempt ascertain yogurt production by different strains lactic efficacy aforementioned products. Materials methods A total 16...

10.4103/epj.epj_46_20 article EN Egyptian Pharmaceutical Journal 2021-01-01

Abstract Enzyme cost and stability are the main problems facing industrial applications. Consequently, Aspergillus niger NRC1ami was isolated from rotten orange recorded a promising pectinase activity (13.8 U/ml). The enzyme optimized using citrus peel pectin as sole carbon source (40 It purified by two steps purifications 632 purification folds. pure showed 14.7% carbohydrate content consists of 15 amino acids. Glutamic acid major (22%) followed leucine (10.67%) threonine minor (2.70%). A....

10.21203/rs.3.rs-1251467/v1 preprint EN cc-by Research Square (Research Square) 2022-02-15

<title>Abstract</title> Continue to hypothesize that honey is a storehouse of beneficial bacteria and most these isolates are levansucrase producers. Accordingly, ten bacterial strains were isolated from different sources. Four had the highest production identified by partial sequencing 16S rRNA gene as <italic>Achromobacter </italic>sp. (10A), <italic>Bacillus paralicheniformis</italic> (2M), subtilis</italic> (9A), paranthracis</italic> (13M). The cytotoxicity selected showed negative...

10.21203/rs.3.rs-683068/v1 preprint EN cc-by Research Square (Research Square) 2021-07-20

Background: Ceramides are structural long-chain lipid molecules essential for cell architecture, with many biological functions involving proliferation, inflammation, apoptosis, and death.Ceramides have a diverse role in carcinogenesis depending on their chain length, metabolism, localization.Disturbance ceramide metabolism has been observed cancers such as head neck, colorectal, lung, liver.Objective: The current study aimed to use high-performance liquid chromatography-tandem mass...

10.21608/ejhm.2023.280194 article EN The Egyptian Journal of Hospital Medicine 2023-01-01
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