Development of probiotic cheese manufactured from goat milk: Response surface analysis via technological manipulation

• Tipo: Artigo em Revista Científica Internacional
• Data: 1998

Autores

Gomes, AMP (Autor) Outra; F. Xavier Malcata (Autor) Outra

Revista

Título: Journal of Dairy Science

Vol. 81

Páginas: 1492-1507

ISSN: 0022-0302

Editora: Elsevier

Indexação

ISI Web of Knowledge - 86 Citações

Scopus - 100 Citações

Outras Informações

ID Authenticus: P-001-7T9

DOI: 10.3168/jds.s0022-0302(98)75715-7

Abstract (EN): 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 x 10(8) 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 x 10(7) 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 (10(6) 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 x 10(7) of viable B. Lactis and 7 x 10(6) of viable L. acidophilus cells/ml of milk, respectively, 3.50% (wt/wt) salt, and ripening for 70 d.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 16