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Production of antibacterials from the freshwater alga Euglena viridis (Ehren)

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The antibacterial properties of Euglena viridis, collected from a freshwater pond at the Central Institute of Freshwater Aquaculture (CIFA), Bhubaneshwar, India, were tested against various strains of virulent pathogens viz. Pseudomonas putida(PP1, PP2),P. aeruginosa (PA1, PA2, PA3, PA4), P. fluorescens (PF1, PF2, PF3, PF4), Aeromonas hydrophila (AH30, AH31, AH32, AH34), Edwardsiella tarda, Vibrio alginolyticus (VA1),V. anguillarum(VN1, VN2 & VN3), V. fluvialis (VF1), V. parahemolyticus (VP1) and V. harveyi (VH1) andEscherichia coli(O115, O1, O156, O164, O111 & O109). Four organic extracts viz. methanolic, ethanolic, acetone and acetone/ethanol of theE. viridis showed moderate to high antibacterial activity to all the bacterial pathogens. Rotavapor extraction products showed higher sensitivity in comparison to cold and hot extractions.

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Correspondence to B. K. Das.

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Das, B.K., Pradhan, J., Pattnaik, P. et al. Production of antibacterials from the freshwater alga Euglena viridis (Ehren). World J Microbiol Biotechnol 21, 45–50 (2005).

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  • Aeromonas hydrophila
  • bio control
  • Euglena viridis
  • organic extract
  • Pseudomonas
  • Vibrio