Development of a probiotic cheddar cheese containing human-derived Lactobacillus paracasei strains
Article Abstract:
The identification of lactobacilli starter strains in cheddar cheese is complicated by the growth of other Lactobacillus species during ripening. A randomly amplified polymorphic DNA method has been developed to differentiate nonstarter and adjunct lactobacilli in cheeses manufactured using three strains of Lactobacillus salivarius and two strains of L. paracasei. Results reveal that the two strains of L. paracasei had sustained growth during cheese ripening but the strains of L. salivarius exhibited declining viability with cheese ripening.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1998
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Cloning and DNA sequence analysis of two abortive infection phage resistance determinants from the lactococcal plasmid pNP40
Article Abstract:
The Lactococcus lactis plasmid pNP40 contains AbiE and AbiF abortive infection phage mechanisms, which are encoded by two open reading frames (ORFs) and one ORF, respectively. The amount of GC in the ORFs encoding AbiE and AbiF is low. The AbiF protein is similar to the AbiD and AbiD1 proteins. AbiE confers partial resistance to phi-712 probably by disrupting the transcription, packaging or release of phage particles. AbiF confers partial resistance to both phi-c2 and phi-712 by suppressing phage replication.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1995
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