Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
Journal of Biological Sciences
Year: 2007  |  Volume: 7  |  Issue: 6  |  Page No.: 904 - 910

Antifungal and Antibacterial Activity of the Microalgae Collected from Paddy Fields of Iran: Characterization of Antimicrobial Activity of Chroococcus dispersus

Younes Ghasemi, Ameneh Moradian, Abdolali Mohagheghzadeh, Shadman Shokravi and Mohammad Hossein Morowvat    

Abstract: Antifungal and antibacterial activity of the microalgae from paddy fields in the south of Iran were studied. Soil samples were collected from paddy fields of Fars province and were cultured in BG11 medium. Supernatants, methanolic and hexane extracts from biomass of 60 strains of microalgae were isolated and screened against six strains of bacteria and four strains of fungi. The culture supernatants of 21 strains of microalgae and methanolic extracts of 8 strains exhibited significant antibacterial effect and 17 strains showed antifungal effect. No antimicrobial activity was detected in the hexane extracts and no methanolic extracts inhibited the growth of fungi. In present screening, Chroococcus dispersus, Chlamydomonas reinhardtii and Chlorella vulgaris appeared to be the most promising strains and it was shown that they excreted a broad spectrum of antimicrobial substances in the culture medium. Among all of the species studied in this investigation for antibacterial and antifungal activity, Chroococcus dispersus PTCC 1677 indicated widespread spectrum of antimicrobial activities. Bioautography and Bioassay-guided fraction of culture medium of the Chroococcus dispersus exhibited a polar substance in the culture medium as well.

Cited References   |    Fulltext    |   Related Articles   |   Back
 
 
   
 
 
 
  Related Articles

 
 
 
 
 
 
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility