Metagenome of starter culture
The libraries were prepared using PCR with universal primers to the V4 region of 16S rRNA gene. For each DNA sample, two libraries were prepared, which were sequenced in parallel using the MiSeq Reagent Micro Kit v2 (300-cycles) MS-103-1002 (Illumina, USA) on the MiSeq sequencer (Illumina, USA) using the reagent kit, which can read 150 bp from each end. After sequencing, fastq files were obtained at the output, containing information on the sequences of the analyzed regions of the 16S rRNA gene, as well as information on the reliability of reading each individual nucleotide.