The potential effect of FOS and inulin upon probiotic bacterium performance in curdled milk matrices

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Rodrigues, D (Autor) Outra; Rocha Santos, TAP (Autor) Outra; Pereira, CI (Autor) Outra; Gomes, AM (Autor) Outra; F. Xavier Malcata (Autor) Outra; Freitas, AC (Autor) Outra

Revista

Título: LWT - Food Science and Technology

Vol. 44 Nº 1

Páginas: 100-108

ISSN: 0023-6438

Editora: Elsevier

Indexação

ISI Web of Knowledge - 48 Citações

Scopus - 64 Citações

Outras Informações

ID Authenticus: P-002-Z3D

DOI: 10.1016/j.lwt.2010.05.021

Abstract (EN): Inulin and fructooligosaccharides were studied for their prebiotic effect upon growth/survival of probiotic bacteria and technological potential in probiotic food processing, via characterization of glycolysis, proteolysis and lipolysis in curdled milk matrices; the ultimate goal is the manufacture of synbiotic cheeses. Prebiotic compounds did not significantly affect growth/viability of all strains studied, except Lactobacillus acidophilus La-5. Proteolysis indices revealed considerable casein degradation in probiotic and synbiotic matrices inoculated with Bifidobacterium lactis B94 and Lactobacillus casei-01; lower values were achieved in those inoculated with L acidophilus La-5, yet a synbiotic effect was apparent in NPN values. Lipolysis was not extensive over storage, irrespective of matrix type; however, interesting differences in terms of the qualitative free fatty acids profile were observed. CLA isomers, and alpha-linolenic and gamma-linolenic acids were detected upon 15 d of ripening of all inoculated matrices. Principal component analysis was able to discriminate the various matrices according to degree of maturation, throughout the ripening period. Microbiological and biochemical parameters unfolded a very good technological potential, especially of B. lactis B94 and L casei-01, to produce novel types of functional dairy matrices - although extrapolation to actual cheeses should still be done with care, because e.g. syneresis was not considered.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9