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http://hdl.handle.net/10773/27869
Title: | The potential effect of FOS and inulin upon probiotic bacterium performance in curdled milk matrices |
Author: | Rodrigues, Dina Rocha-Santos, Teresa A. P. Pereira, Cláudia I. Gomes, Ana M. Malcata, F. Xavier Freitas, Ana C. |
Keywords: | Probiotics Prebiotics Synbiotics Dairy products Cheese |
Issue Date: | 2011 |
Publisher: | Elsevier |
Abstract: | 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 α-linolenic and γ−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. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/27869 |
DOI: | 10.1016/j.lwt.2010.05.021 |
ISSN: | 0023-6438 |
Appears in Collections: | CESAM - Artigos DQ - Artigos |
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Rodrigues et al. - 2011 - The potential effect of FOS and inulin upon probio.pdf | 734.32 kB | Adobe PDF |
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