26Jun 2017

STUDY ON EFFECT OF MONOVALENT AND DIVALENT SALTS ON THE PRODUCTION OF BIOSURFACTANT AND EMULSIFICATION INDEX.

  • Environmental Biology Dept, Federal Polytechnic Nekede Owerri, Imo-State.
  • Biotechnology Dept, Federal University of Technology Owerri, Imo-State.
  • Chemistry Dept, Federal University of Technology Owerri, Imo-State.
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Biosurfactants are produced by micro organisms and are used in industrial and environmental applications as a result of their resistivity to harsh conditions. Their production can be affected by extreme environmental conditions like pH, salinity, temperature, aeration. In view of this we studied the effect of monovalent salt (KCl) and divalent salt (MgCl2) on the biosurfactant producing activity and emulsification index of five bacterial strains (Staphylococcus aureus, Bacillus sp., Corynebacterium sp., Pseudomonas aeruginosa and Proteus sp.). The KCl and MgCl2 increased the biosurfactant production of all bacterial strains. The KCl affected emulsification index (E24) of all the strains except Proteus sp. that recorded the highest E24 of 41.6% with addition of 0.4 g KCl. The MgCl2 increased the E24 of Bacillus sp. (52.4%; 0.1 g); Corynebacterium sp. (50%; 0.1 g); Pseudomonas aeruginosa (56%; 0.2 g); Proteus sp. (57.7%; 0.4 g). These bacterial isolates can be used in industries and environmental applications as a result of their tolerance to salt.

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[C.C. Okore, L.U. Nwaehiri, O.N. Mbanefo, T.E. Ogbulie, A.U. Ugenyi, I.B. Ogbuka, A.E. Ejele and I.A.Okwujiako. (2017); STUDY ON EFFECT OF MONOVALENT AND DIVALENT SALTS ON THE PRODUCTION OF BIOSURFACTANT AND EMULSIFICATION INDEX. Int. J. of Adv. Res. 5 (Jun). 1875-1881] (ISSN 2320-5407). www.journalijar.com

CHIOMA CHIEMEZIE OKORE
FEDERAL POLYTECHNIC NEKEDE OWERRI

DOI:

Article DOI: 10.21474/IJAR01/4616      
DOI URL: http://dx.doi.org/10.21474/IJAR01/4616

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