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Growth enhancement ofbBifidobacterium lactis Bo and Lactobacillus acidophilus Ki by milk hydrolyzates

1998Journal article Restricted access
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dc.contributor.authorGomes, Ana M. P.
dc.contributor.authorMalcata, F. Xavier
dc.contributor.authorKlaver, Frank A.M.
dc.date.accessioned2011-10-18T20:00:19Z
dc.date.available2011-10-18T20:00:19Z
dc.date.issued1998
dc.description.abstractThe determination of the best conditions of preparation of a (tentatively) probiotic starter culture that might be suitable for cheese making composed solely of Bifidobacterium lactis Bo and Lactobacillus acidophilus Ki is critical if a consistently reliable acid production is to be achieved, especially because bifidobacteria have stringent requirements for growth. Therefore, we determined whether B. lactis Bo and L. acidophilus Ki required or benefitted from the addition of milk hydrolyzates (brought about by proteinase or neutrase as the nitrogen source). The growth and acid production of B. lactis in milk were affected by the addition of proteinase-mediated hydrolyzate and, to a lesser extent, by neutrasemediated hydrolyzate; a higher degree of hydrolysis of either hydrolyzate resulted in greater biomass increase and greater acid production. This result suggests that the poor growth of bifidobacteria in milk is due partially to the lack of small peptides and free amino acids. The rates of growth and acidification by B. lactis were enhanced when cocultured with L. acidophilus (1:1 inoculum ratio). Conversely, the growth rates and acid production of L. acidophilus were not positively affected by the addition of either milk hydrolyzate. Although L. acidophilus grew slowly, its proteolytic system was apparently able to generate its own nitrogen source. Nevertheless, coculture with B. lactis (1:1 inoculum ratio) led to enhanced rates of growth and acidification when compared with that of the single strain, suggesting some degree of symbiosis between the strains. ( Key words: Bifidobacterium lactis Bo, Lactobacillus acidophilus Ki, growth, milk hydrolyzate)por
dc.identifier.citationJournal of Dairy Science. ISSN 0022-0302. Vol. 81 n.º 11 (1998), p. 2817-2825por
dc.identifier.doi10.3168/jds.S0022-0302(98)75840-0
dc.identifier.urihttp://hdl.handle.net/10400.14/6462
dc.language.isoengpor
dc.peerreviewedyespor
dc.titleGrowth enhancement ofbBifidobacterium lactis Bo and Lactobacillus acidophilus Ki by milk hydrolyzatespor
dc.typejournal article
dspace.entity.typePublication
person.familyNameGomes
person.familyNameMalcata
person.givenNameAna Maria
person.givenNameFrancisco
person.identifier162628
person.identifier.ciencia-idAA12-BFC1-B2E3
person.identifier.ciencia-id1B13-38A5-35F5
person.identifier.orcid0000-0001-7883-2446
person.identifier.orcid0000-0003-3073-1659
person.identifier.ridB-9944-2013
person.identifier.scopus-author-id57190668768
person.identifier.scopus-author-id7102542478
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationc18c2fb1-f3dc-4274-a646-23d456432798
relation.isAuthorOfPublicationa06c00da-0e2f-4434-8ede-4d7b22c0dfe9
relation.isAuthorOfPublication.latestForDiscoverya06c00da-0e2f-4434-8ede-4d7b22c0dfe9

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