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Articles by Farzaneh Farahani
Total Records ( 3 ) for Farzaneh Farahani
  Amin Mokhlesi , Soodabeh Saeidnia , Ahmad Reza Gohari , Ahmad Reza Shahverdi , Ali Nasrolahi , Farzaneh Farahani , Reza Khoshnood and Nasrin Es`haghi
  Sea cucumbers are potentially presented as the marine sources of antimicrobial and cytotoxic compounds. In this study, we focused on the sea cucumber, Holothuria leucospilota which has not been evaluated until now for antibacterial, antifungal and toxicity of its main organs. Ethyl acetate, methanol and water-methanol extracts were prepared from cuvierian organ, coelomic fluid and body wall of H. leucospilota collected from Persian Gulf. Extracts were evaluated for their antibacterial and antifungal activities against Aspergillus niger, Candida albicans, Staphylococcus aureus, Pseudomonas aeruginosa and Escherichia coli. The activity was determined using the disc diffusion test. Cytotoxic activities of the extracts were assessed by Artemia salina larvae. Results showed that methanol extract of cuvierian organ (Minimum inhibitory concentration (MIC/disc) <1 mg against A. niger) and water-methanol extract of coelomic fluid (MIC/disc = 1 mg against C. albicans) showed significant antifungal activities but no inhibitory effect of the extracts against bacteria was observed. MIC for water-methanol extract of coelomic fluid was 3 mg against both C. albicans and A. niger. Significant inhibitory effect was observed in cytotoxic assays which was highest in body wall methanol extract (LC50 = 0.4 μg mL-1).
  Farzaneh Farahani , HananehKorehi , Shabnam Mollakarami , Soghra Skandari , Seyyed Ghasem Ghorbanzadeh Zaferani and Zahra Mallek Ciahe Shashm
  Jajerood river is one of the freshwater river in Iran. Seasonal changes in phytoplankton composition and physico-chemical factors affecting these parameters were investigated in this study. Qualitative phytoplankton and nutrient analysis were carried out between 2005 and 2006 at 19 sampling stations of Jajerood, situated in the north-eastern of Tehran. A total of 53 taxa were determined, belonging to four algae classes: Bacillariophyceae, Chlorophyceae, Cyanophyceae and Dinophyceae. Bacillariphyceae appeared to be the dominant group in terms of total genus number during the study period. The number of phytoplankton genus was high in summer and quite low in winter. The highest phytoplankton diversity determined in summer was due to the increase in the numerical of Cymbella from the diatoms. Phytoplankton diversity declined to the lowest level in the winter. The lowest and highest concentration of NO3 and PO4 were 1.9 and 8.5 μg L-1 and 0.05 and 0.76 μg L-1, respectively.
  Farzaneh Farahani , Ali-RezaAhmadi , Saif Allah Farmohammadi and Shokufeh Golkhoo
  A saline water micro algae was isolated from Tiab estuary. The Al-25 strain was identified to be as genus Chlorella. The maximum number of viable cells was 50/8 x 104 CFU mL-1 with 852 mg L-1 of DCW and the maximum specific growth rate and biomass productivity were estimated to be 72 h and 852 mg L-1, respectively. Crude protein content of Chlorella Al-25 was about 55-58%.
 
 
 
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