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Articles by Ali Elshafei
Total Records ( 2 ) for Ali Elshafei
  Ali Elshafei and H.T. El-Zanfaly
  The growing use of polyester, nylon and acrylics which have inherent resistance to microbial decomposition, came into wider use to replace cotton in many industrial fabrics. In addition, the consumers are now increasingly aware of the hygienic life style and there is a necessity for a wide range of textile products finished with antimicrobial properties. The new technological developments for imparting antimicrobial permanent finishes, of the non-leaching type, to different textiles, including the man-made one, would help reduce the negative impact effects and possibly could comply with the consumers requirements. Hospital materials such as theater drapes, gowns, masks, sheets and pillowcases are known to be major sources of cross-infection, so all textile materials used in hospitals should prevent or minimize or transmission of infectious diseases. This study reviews some recent approaches of antimicrobial finishing textiles and their properties.
  Forar Laidi Rabah , Ali Elshafei , Mahmoud Saker , Bengraa Cheikh and Hacene Hocine
  A novel actinomycete strain designated RAF10, producing antimicrobial substances was isolated from an Egyptian soil. Morphological and chemical studies indicated that strain RAF10 belonged to the genus Streptomyces. The comparison of its physiological characteristics with those of known species of Streptomyces showed some differences with the nearest species Streptomyces enissocaesilis. Analysis of the 16S rDNA sequence of strain RAF10 showed a similarity level ranging between 97.22 and 98.37% within Streptomyces species, with S. enissocaesilis the most closely related. However, the phylogenetic analysis indicated that strain RAF10 represent a distinct phyletic line suggesting a new genomic species. This novel strain was active against Gram-positive and Gram-negative Bacteria, yeasts and filamentous fungi. The highest antibiotic formation was obtained when using (ISP 4) broth medium with some modifications, for 120 h at 28°C in New Brunswick Scientific Shaker at 200 rpm.
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