Rapid identification of Lactobacillus brevis using the polymerase chain reaction.

Abstract:

AIMS:Species-specific PCR was applied to identify Lactobacillus brevis and the sensitivity and the specificity of the protocol were determined. METHODS AND RESULTS:Strains of Lact. brevis obtained from foods, particularly dairy products, and various strain collections, were identified by PCR using primers which amplified a 1340 bp fragment within the 16S rRNA gene. The PCR product was obtained after amplification of all the Lact. brevis strains tested; the size of the amplicon was as expected. No PCR products were observed after amplification from DNA of several lactic acid bacteria (LAB) species. CONCLUSIONS:A PCR method was optimized to identify Lact. brevis. The protocol was highly efficient and sensitive. SIGNIFICANCE AND IMPACT OF THE STUDY:Conventional phenotypic methods often lead to ambiguous identification of LAB species belonging to Lact. brevis. The proposed protocol is sensitive, specific, and can be applied to total DNA extracted by use of chelating matrix with loss of neither sensitivity nor specificity.

journal_name

Lett Appl Microbiol

authors

Guarneri T,Rossetti L,Giraffa G

doi

10.1046/j.1472-765x.2001.01014.x

subject

Has Abstract

pub_date

2001-11-01 00:00:00

pages

377-81

issue

5

eissn

0266-8254

issn

1472-765X

pii

1014

journal_volume

33

pub_type

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