Biotechnology Letters

, Volume 13, Issue 6, pp 441–444 | Cite as

N-carboxymethylchitosan inhibition of aflatoxin production: Role of zinc

  • R. G. Cuero
  • G. Osuji
  • A. Washington

Abstract

Aqueous Solutions of N-carboxymethylchitosan (NCMC) suppressed both growth and aflatoxin production byAspergillusflavus andA.parasiticus in submerged culture (Adye and Mateles A&M). Test media were amended with various concentrations of zinc (15, 30, 45, 60 uM), and NCMC solution (0.62 uM). After 8 days incubation NCMC-treated cultures showed marked reduction of aflatoxin production and fungal growth. Enhanced levels of zinc did not overcome the NCMC-mediated inhibition of fungal growth or aflatoxin production.

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Literature Cited

  1. Cleveland, T.E., Lax, A.R., Lee, L., and Bhatnagar, D. (1987).Appl. Environ.Microbial. 53(7), 1711–1713.Google Scholar
  2. Cuero R.G., Murray, A. and Smith, J. (1988a). In: J. Mukerji, K. L. Garg (eds.Biocontrol of Plant Diseases Vol. 2, 67–84. CRC Press, Inc., Boca Raton, FL.Google Scholar
  3. Cuero, R.G., Hernandez, I., Cardeanas, H., Osorio, E. and Onyiah. (1987). In: M. S. Zuber, E. B. Lillehoj and B. L. Renfro (eds).Aflatoxin In Maize 323–333. CIMMYT, Mexico.Google Scholar
  4. Cuero, R.G., Lillehoj, E.B., Cleveland, T.E. and Reine, A. (1988b).Proc. Japanese Ass. Mycotoxicol. Suppl. IUPAC '88 and ICPP Kyoto, Japan.Google Scholar
  5. Cuero, R.G., and Lillehoj, E.B. (1990).Biotech. Tech. Vol. 4, No. 4, 275–280.Google Scholar
  6. Diener, U.L. and Davis, N.D. (1969). In: L. A. Goldbalatt (ed).Aflatoxin. 13–54. Academic Press, Inc., New York.Google Scholar
  7. Hadwiger, L.A., Fristensky, B. and Rigglemen, R.C. (1984). In: J. P., Zikakis (ed.).Chitin and Chitosan. and Related Enzymes. 291–302. Academic Press, Inc., New York.Google Scholar
  8. Maggon, K.K., Gupta, S.K. and Venkitasubramanian, T.A. (1977).Bacteriol. Rev 41, 822–855.Google Scholar
  9. Mateles, R.I. and Adye, J.C. (1965).Appl. Microbiol 13, 208–211.Google Scholar
  10. Muzzarelli, R.A.A. Tanfani, F. and Scarpani, G. (1980).Biotechnol. Bioeng. 22, 885–896.Google Scholar
  11. Muzzarelli, R.A. (1988).Carbohydrate Polymers. 8, 1–21.Google Scholar
  12. Ramaut, J.L., Wanderhoven, L. and Remacle, J. (1970).Rev. Ferm. Ind. Aliment. 25, 184–189.Google Scholar
  13. Wergin, W., and Stone, A.R. (1981).Scanning Electron Microscopy. SEM Inc., AMF O'Hare, Chicago, IL.Google Scholar

Copyright information

© Science and Technology Letters 1991

Authors and Affiliations

  • R. G. Cuero
    • 1
  • G. Osuji
    • 1
  • A. Washington
    • 1
  1. 1.Cooperative Agriculture Research Center & Dept. of BiologyPrairie view A&M UniversityPrairie ViewUSA

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