Isolation and identification of protease-producing psychrotrophic bacteria from raw camel milk

Australian Journal of Dairy Technology

Volumn 52, Issue 1, 1997, Pages 5-7

  Zahran, A S ^a   Al Saleh, A A ^a  

^a KING SAUD UNIVERSITY   (Saudi Arabia)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0031512023     PISSN: 00049433     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (23)

1. Adams, J.B. (1991) Review: Enzyme inactivation during heat processing of food stuffs. Int. J. of Food Sci. and Technol. 26, 1-20.
2. Al-Mohizea, I.S. (1986) Microbial quality of raw camels milk in Riyadh markets. Egyptian J. Dairy Sci. 14, 173-180.
3. Collins, S.J., Bester, B.H., McGill, A.E. (1993) Influence of psychrotrophic bacterial growth in raw milk on the sensory acceptance of UHT skim milk. J. Food Prot. 56(5), 418-425.
4. Cousin, M.A. (1982) Presence and activity of psychrotrophic microorganisms in milk and dairy products: A review. J. Food Prot. 45, 172-207.
5. Cousins, C.M., Bramley, A.J. (1981) The microbiology of raw milk. In Dairy Microbiology, Vol. 1, The Microbiology of milk pp119-163 (Ed. R.K. Robinson). London. Applied Science Publishers.
6. Cowan, S.R., Steel, K.J. (1974) Manual for the identification of Medical bacteria. Cambridge University Press.
7. Cox, J.M., MacRae, I.C. (1989) A numerical taxonomic study of proteolytic and lipolytic psychrotrophs isolated from caprine milk. J. App. Bacteriol. 66, 137-152.
8. Cromie, S. (1992) Psychrotrophs and their enzyme residues in cheese milk. Aust. J. Dairy Technol. 47, 96-99.
9. Fox, C.W., Chrisope, G.L., Marshall, R.T. (1976) Incidence and identification of phospholipase C-producing bacteria in fresh and spoiled homogenised milk. J. Dairy Sci. 59, 1857-1864.
10. Frank, J.F., Hankin, L., Koburger, J.A., Marth, E.H. (1985): Tests for group of micro-organisms. In Standard Methods for the examination of dairy products, 15th edn, pp189-201 (Ed. G.H. Richardson). Washington, DC: American Public Health Association.
11. Juffs, H.S. (1973) Identification of Pseudomonas spp isolated from milk produced in south-eastern Queensland. J. Appl. Bacteriol. 36, 585-598.
12. Kumura, H., Mikawa, K., Saito, Z. (1993) Purification and some properties of proteinase from Psuedomonas fluorescens No. 33. J. Dairy Res. 60, 229-237.
13. Law, B.A. (1979) Review of the progress of dairy science. Enzymes of psychrotrophic bacteria and their effects on milk and milk products. J. Dairy Res. 46, 573-588.
14. Malik, R.K., Mathur, D.K. (1983) Isolation and identification of protease-producing bacteria from dairy products in India. J. Society Dairy Technol. 36(3), 76-78.
15. Nunez, J.A., Chavarri, F.J., Nunez, M. (1984) Psychrotrophic bacterial flora of raw ewes milk, with particular reference to gram-negative rods. J. Appl. Bacteriol. 57, 23-29.
16. Richardson, B.C., TeWhaiti, I.E. (1978) Partial characterisation of heatstable proteases of some psychrotrophic bacteria from raw milk. New Zealand J. Dairy Sci. Technol. 13, 172-176.
17. Robinson, R.K.(ed.) (1990) Dairy Microbiology, Vols. 1 & 2, 2nd edn. London: Elsevier Applied Science.
18. Sorhaug, T., Stepaniak, L. (1991) Microbial enzymes in the spoilage of milk and dairy products. In: Food Enzymology (Fox, P.F., ed.), Vol.1, pp169-218, Elsevier Applied Science, London.
19. Suhren, G. (1989) Producer micro-organisms. In: Enzymes of Psychrotrophs in Raw Foods (McKellar, R.C., ed.), pp3-34, CRC Press, Boca Raton.
20. Villafalia, J.D., Frias, J.D., Abad, P., Rodriquez-Fernandez, C. (1993) Extra-cellular proteinase activity from psychrotrophic Psuedomonas fluorescens biovar1 (Ps. fluorescens NC1). Milchwissenschaft 48(8), 435-438.
21. West, F.B., Adams, D.M., Speck, M.L. (1978) Inactivation of heat-resistant proteases in normal UHT sterilised skim milk by a low temperature treatment. J. Dairy Sci. 61, 1078-1084.
22. White, C.H., Gillis, W.T., Simmler, D.L., Galal, M.M., Walsh, J.R., Adams, J.T. (1973). Evaluation of raw milk quality tests. J. Food Prot. 41, 356-360.
23. Zahran, A.S. (1988) Production and properties of a protease secreted by Ps.fluorescens R. PhD thesis. Univ. of Edinburgh, UK (1988).