Biotechnology - Sciene

   This study aimed to synthesise carboxymethylnanochitosn as nanochitosan derivative from nanochitosan synthesized from soluble chitosan (low molecular weight) and encapsulate streptomycin then characterize and bioassay them on pathogenic gram positive and gram negative bacteria and Rhabdomyosarcoma cell- line. Ionic gelation method was used to synthesize nanchitosan from soluble and insoluble chitosan (high molecular weight). Dissolved chitosan was found to be superior to non-soluble in the preparation of nanochitosan.

     The present study was designed to detect the effect of Saussurea lappa and Cyperus esculentus extracts on male albino mice fertility in addition to the histopathological changes in liver, kidney and testes. Saussurea lappa extract was prepared by maceration of 50 gm of Saussurea lappa roots with 90% methanol, then chemical detection of flavonoids, alkaloids, tannins, saponins, terpenes and steroids was carried out.

      This study was conducted to investigate the effect of -glucan extracted from the medicinal mushroom pleurotus eryngii as an anti-angiogenic and anti-tumor factor. Samples of dried mushroom Pleurotus eryngii were collected from Ministry of Agriculture/Department of Organic Farming in Baghdad. The -glucan was extracted from the mushroom samples using hot water extraction method. The