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Effect of lactic starter inoculation on chemical, microbiological, rheological and sensory characteristics of La Serena cheese

  • Margarita Medina (a1), Buensuceso Fernandez Del Pozo (a1), M. Asunción Rodríguez-Marin (a1), Pilar Gaya (a1) and Manuel Nuñez (a1)...

Summary

The influence of lactic starter inoculation on La Serena cheese characteristics was investigated in duplicate experiments, each consisting of a vat inoculated with 1% Lactococcus lactis subsp. lactis skim milk culture and a control vat without lactic starter. Lc. lactis inoculation achieved a significant pH decrease in the interior and on the surface of cheese, which ranged from 0·09 to 0·25 units throughout ripening. Breakdown of αs1- and β-casein and formation of soluble N fractions were retarded by Lc. lactis inoculation. Levels of αs1-casein, β-casein and pH 4·6-soluble N after 60 d were respectively 30·4, 34·9 and 28·8% in cheese made with starter and 18·4, 23·0 and 34·2% in control cheese. More acidic conditions in the interior of cheese made with starter resulted in a reduction of Enterobacteriaceae, coliform and staphylococci counts, which after 60 d were respectively 2·55, 2·40 and 0·29 log units lower than in control cheese. The firmer texture obtained throughout maturation for cheese made with starter was attributed to retarded proteolysis and lower pH value. Cheese flavour quality and intensity were significantly impaired by Lc. lactis inoculation.

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Bautista, L., Gaya, P., Medina, M. & Nuñez, M. 1988 A quantitative study of enterotoxin production by sheep milk staphylococci. Applied and Environmental Microbiology 54 566569
Creamer, L. K. & Olson, N. F. 1982 Rheological evaluation of maturing Cheddar cheese. Journal of Food Science 47 631636, 646
De Buyser, M. L., Janin, F. & Dilassek, F. 1985 Contamination of ewe cheese with Staphylococcus aureus: study of an outbreak of food poisoning. In The Staphylococci pp. 677678 (ed Jeljaszewicz, J.). Stuttgart: Gustav Fischer Verlag. (Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene Supplement no. 14)
Deeth, H. C. & Fitz-Gerald, C. H. 1983 Lipolytic enzymes and hydrolytic rancidity in milk and milk products. In Developments in Dairy Chemistry-2 Lipids pp. 195239 (Ed. Fox, P. F.). London: Applied Science Publishers
Fernandez Del Pozo, B.Gaya, P., Medina, M., Rodríguez-Marin, M. A. & Nuñez, M. 1988 a Changes in the microflora of La Serena ewes' milk cheese during ripening. Journal of Dairy Research 55 449455
Fernandez Del Pozo, B.Gaya, P., Medina, M., Rodr´guez-Marin, M. A. & Nu˜ez, M. 1988 b Changes in chemical and rheological characteristics of La Serena ewes' milk cheese during ripening. Journal of Dairy Research 55 457464
Fox, P. F. 1989 Proteolysis during cheese manufacture and ripening. Journal of Dairy Science 72 13791400
Gaya, P., Medina, M., Bautista, L. & Nuñez, M. 1988 Influence of lactic starter inoculation, curd heating and ripening temperature on Staphylococcus aureus behaviour in Manchego cheese. International Journal of Food Microbiology 6 249257
Gaya, P., Medina, M. & Nuñez, M. 1983 Accelerated decrease of Enterobacteriaceae counts during ripening of raw milk Manchego cheese by lactic culture inoculation. Journal of Food Protection 46 305308
Gaya, P., Medina, M. & Nuñez, M. 1987 Enterobacteriaceae, coliforms, faecal coliforms and salmonellas in raw ewes' milk. Journal of Applied Bacteriology 62 321326
Heimgartner, U., Pietrzak, M., Geertsen, R., Brodelius, P., Da Silva Figueiredo, A. C. & Pais, M. S. S. 1990 Purification and partial characterization of milk clotting proteases from flowers of Cynara cardunculus. Phytochemistry 29 14051410
Law, B. A. & Kolstad, J. 1983 Proteolytic systems in lactic acid bacteria. Antonie van Leeuwenhoek Journal of Microbiology 49 225245
Law, B. A., Sharpe, M. E. & Chapman, H. R. 1976 The effect of lipolytic Gram-negative psychrotrophs in stored milk on the development of rancidity in Cheddar cheese. Journal of Dairy Research 43 459468
Noomen, A. 1983 The role of the surface flora in the softening of cheeses with a low initial pH. Netherlands Milk and Dairy Journal 37 229232
Thomas, T. D. & Pritchard, G. G. 1987 Proteolytic enzymes of dairy starter cultures. FEMS Microbiology Reviews 46 245268
Wieneke, A. A. & Gilbert, R. J. 1987 Comparison of four methods for the detection of staphylococcal enterotoxin in foods from outbreaks of food poisoning. International Journal of Food Microbiology 4 135143

Effect of lactic starter inoculation on chemical, microbiological, rheological and sensory characteristics of La Serena cheese

  • Margarita Medina (a1), Buensuceso Fernandez Del Pozo (a1), M. Asunción Rodríguez-Marin (a1), Pilar Gaya (a1) and Manuel Nuñez (a1)...

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