Abstract
Candida utilis was grown on pineapple cannery effluent as the sole carbon and energy source. These effluents are rich in microbially utilizable nutrients. The principal sugars in the effluent were glucose, fructose and sucrose, and when supplemented with diammonium hydrogen phosphate to prevent nitrogen limitation they supported good growth. The maximum specific growth rate (μm=0.46h–1) and cell yield coefficient (Yc/s=0.30) were obtained with 23.2 g carbohydrate/l in the growth medium. The values of μm and Yc/s varied with carbohydrate concentration: higher values of μm and Yc/s were obtained with lower concentrations of carbohydrate, suggesting that a chemostat would be more suitable for single cell protein production. Freeze-dried yeast contained 55.3, 51.2, 1.45, 6.4 and 27.4% of crude protein, true protein, DNA, RNA and carbohydrate respectively. The yeast had a balanced amino acid profile, except for sulphur-containing amino acids. A 90–95% reduction in the chemical oxygen demand of the effluent was achieved during this process which suggests that yeast may be effectively used to treat this waste.
Similar content being viewed by others
References
Alroy, Y. & Tannenbaum, S.R. 1973 The influence of environmental conditions on the macromolecular composition of Candida utilis. Biotechnology and Bioengineering 15, 239–256.
American Public Health Association. 1976 Standard Methods for the Examination of Water and Wastewater. Washington, DC: American Public Health Association.
Association of Official Analytical Chemists. 1975 Methods of Analysis of the Association of Offical Analytical Chemists. Washington, D C: Association of Official Analytical Chemists.
Forage, A.J. 1978 Recovery of yeast from confectionery effluent. Process Biochemistry 13, 8, 11 & 30.
Genevol, M. 1957 Traite de Chimie Biologique. Paris: Presses Universitaires de France.
Herbert, D., Phipps, P. J. & Strange, R.E. 1971 Chemical analysis of microbial cells. In Methods in Microbiology, Vol. 5B, eds Norris, J R. & Ribbons, D W. pp. 209–344. London: Academic Press.
Iyenger, M.S. 1968 Production of single cell protein from hydrocarbons: India. In Single Cell Protein, eds Mateles, R.I. & Tannenbaum, S.R. pp. 263–267. Cambridge, Massachusetts and London: The MIT Press.
Lawford, G.R., Kligerman, A. & Williams, T. 1979 Production of high-quality edible protein from Candida yeast grown on continuous culture. Biotechnology and Bioengineering 21, 1163–1174.
Lleweyn, D.A.B. 1967 Single cell protein from hydrocarbons. Presented at the Institute of Petroleum, Symposium. pp. 169–174, September, London.
Meyer, E.W. 1966 Soya protein food, soya protein concentrate and isolates. In: The Proceedings of the International Conference on Soybeans. pp. 144–148. Peoria: USDA.
Nelson, G.E.N., Anderson, R.P., Rhodes, R.A., Shakleton, M.C. & Hall, H.H. 1960 Lysine, methionine and trytophan content of microorganisms II Yeast. Applied Microbiology 8, 179–185.
Prior, B.A., Botha, M., Custers, M. & Casaleggio, C. 1981 Fermentation of pineapple cannery effluent by Candida utilis. In Biotechnology, Vol.2, eds Moo-Young, M. & Robinson, C.W. pp. 59–123. Pergamon Press.
Simpson, R.J., Neuberger, M.R. & Liu T.Y. 1976 Complete amino acid analysis of proteins from a acid hydrolysate. Journal of Biological Chemistry 252, 1936–1940.
Skogman, H. 1976 Production of symba-yeast from potato wastes. 1976 In Food from Wastes, eds Birch., G.G., Parker, K.J. & Worgan, J.T. pp. 167–179. London: Applied Science Publishers Ltd.
Umbreit, W.W., Burris, R.H. & Stauffer, J.F. 1972 Manometric and Biochemical Techniques, 5th edn. Minneapolis: Burgess Publication Co.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Nigam, J. Single cell protein from pineapple cannery effluent. World Journal of Microbiology and Biotechnology 14, 693–696 (1998). https://doi.org/10.1023/A:1008853303596
Issue Date:
DOI: https://doi.org/10.1023/A:1008853303596