Abstract:
:This is the first study focused to bacterial diversity and dynamic during the vinification of two important Central Europe grape vines: Blaufränkisch and Grüner Veltliner. The investigation strategy included culture-dependent and culture-independent approaches. Four different agar media were utilized for the isolation of various bacteria occurring in several fermentation stages. The isolates were clustered by fluorescent-ITS PCR and, one or more representatives of each cluster, were identified by 16 rRNA gene sequencing. The culture-independent approach, based on 16S rRNA gene amplification, combined the denaturing gradient gel electrophoresis (DGGE) method and the construction of bacterial clone library for each wine fermentation step. A complex bacterial community was identified, comprising different lactic acid bacteria and acetic acid bacteria, such as Leuconostoc spp., Lactobacillus spp. and Gluconobacter spp. Other OTUs and bacterial isolates embraced the Actinobacteria, Bacilli, Alpha-, Beta- and Gamma-proteobacteria classes. Different taxa already detected by recent studies, such as Sphingomonas, Variovorax, Pantoea, Enterobacter and Tatumella, were detected confirming the continuous occurrence of these kinds of bacteria in wine environment. Moreover, novel genera (Amycolatopsis, Hydrogenophilus, Snodgrassella, Telluria, Gilliamella, Lelliottia, and Lonsdale quercina) never detected before were recognized, too. The role of these, until now anonymous, bacteria during vinification deserves investigation, which could open a new research field in wine technology.
journal_name
Int J Food Microbioljournal_title
International journal of food microbiologyauthors
Godálová Z,Kraková L,Puškárová A,Bučková M,Kuchta T,Piknová Ľ,Pangallo Ddoi
10.1016/j.ijfoodmicro.2015.10.015subject
Has Abstractpub_date
2016-01-18 00:00:00pages
110-6eissn
0168-1605issn
1879-3460pii
S0168-1605(15)30148-3journal_volume
217pub_type
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