These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Genotypic heterogeneity among Lactobacillus helveticus strains isolated from natural cheese starters.
    Author: Giraffa G, De Vecchi P, Rossi P, Nicastro G, Fortina MG.
    Journal: J Appl Microbiol; 1998 Sep; 85(3):411-6. PubMed ID: 9750270.
    Abstract:
    A total of 23 strains of Lactobacillus helveticus isolated from natural whey starter cultures for Italian hard cheeses and three reference strains were characterized by plasmid profiling, ribotyping and random amplified polymorphic DNA (RAPD) fingerprinting. The data showed an interesting strain heterogeneity in natural cheese starters, that seemed not only strain-dependent, but also related to the source of isolates. Nineteen of the strains tested harboured extrachromosomal elements, whilst 11 different plasmid profiles were detected. Ribotyping with a variety of restriction enzymes differentiated 11 strains and in a few cases, RAPD fingerprinting allowed differentiation amongst strains that were not distinguished by the other two techniques.
    [Abstract] [Full Text] [Related] [New Search]