Ps. Cocconcelli et al., USE OF RAPD AND 16S RDNA SEQUENCING FOR THE STUDY OF LACTOBACILLUS POPULATION-DYNAMICS IN NATURAL WHEY CULTURE, Letters in applied microbiology, 25(1), 1997, pp. 8-12
The development of communities of the thermophilic microflora of natur
al whey culture for Parmigiano Reggiano cheese production was studied
by means of molecular techniques. RAPD analysis facilitates the identi
fication of the Lactobacillus strains involved in this microbial assoc
iation and permitted the study of population dynamics during two cycle
s of whey fermentation. Analysis of RAPD fingerprints revealed the pre
sence of four biotypes that dominate the whey fermentation process. Se
quence analysis of 16S rDNA demonstrated that the strains isolated fro
m whey belong to Lact. helveticus and Lact. delbrueckii ssp. lactis sp
ecies.