Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/6636
Título: Development of Probiotic Cheese Manufactured from Goat Milk: Response Surface Analysis via Technological Manipulation
Autor: Gomes, Ana M.P.
Malcata, F. Xavier
Palavras-chave: Bifidobacterium lactis
Lactobacillus acidophilus
Caprine milk
Cheese ripening
Data: 1998
Editora: Elsevier
Citação: GOMES, Ana M.P; MALCATA, F. Xavier - Development of Probiotic Cheese Manufactured from Goat Milk: Response Surface Analysis via Technological Manipulation. Journal of Dairy Science. ISSN Journal of Dairy Science. ISSN 0022-0302. Vol. 81, n.º 6 (1998), p.1492-1507
Resumo: Production of caprine milk has been rising steadily, partially because of its good nutritional value; the possibility of improving nutritional benefits by adding probiotic species such as Bifidobacterium lactis and Lactobacillus acidophilus was assessed. The manufacturing process of a traditional semi-hard goat cheese was technologically modified to optimize the process. The amount of starter inoculum, the concentration of salt, the addition of a protein hydrolysate, and the ripening time were varied to improve the microbiological, biochemical, and sensory properties of the cheese. Bifidobacterium lactis was able to grow slightly (up to 3 × 108 cfu/g), but growth was dependent on the physicochemical characteristics of the cheese. Lactobacillus acidophilus did not grow substantially in any of the experimental cheeses, and maximum numbers did not exceed 6 × 107 cfu/g. Concentrations of lactic acid and acetic acid increased throughout cheese manufacture, indicating that production of these acids was uncoupled from growth. Viability of the probiotic strains during ripening was sufficient to yield numbers that were above the accepted threshold (106 cfu/g) for a probiotic effect. Both strains contributed significantly to ripening, especially in the formation of low molecular mass peptides and amino acids, but lipolysis was not greatly affected. Statistical analyses using response surface methodology indicated that the manufacture of goat cheese could be optimized by the addition of 0.30% (vol/wt) milk hydrolysate, 3 × 107 of viable B. lactis and 7 × 106 of viable L. acidophilus cells/ml of milk, respectively, 3.50% (wt/wt) salt, and ripening for 70 d.
Peer review: yes
URI: http://hdl.handle.net/10400.14/6636
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0022030298757157
Aparece nas colecções:ESB - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review

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