Bacterial Communities Related to Aroma Formation during Spontaneous Fermentation of ‘Cabernet Sauvignon’ Wine in Ningxia, China
Zhong Zhang, Qingchen Zhang, Hui Yang, Lijun Sun, Hongchuan Xia, Wenjing Sun +2 more
Foods
Abstract
Bacteria are an important part of wine 'microbial terroir' and contribute to the formation of wine flavor. Based on high-throughput sequencing and non-targeted metabonomic technology, this study first explored the bacterial composition and its effect on the aroma formation of spontaneously fermented 'Cabernet Sauvignon' (CS) wine in the Eastern Foot of Helan Mountain (EFHM), Ningxia. The results showed that there were significant differences in bacterial communities during fermentation of CS grapes harvested from different sub-regions of EFHM, with the earlier-established vineyard obtaining more species. The level of bacterial diversity initially decreased and then increased as the fermentation proceeded. Malolactic fermentation (MLF) was spontaneously initiated during alcohol fermentation (AF). <i>Pantoea</i>, <i>Lactobacillus</i>, <i>Rhodococcus</i>, <i>Fructobacillus</i>, and <i>Komagataeibacter</i> were the core bacterial genera in the fermentation mixture. <i>Lactobacillus</i> contributed to the synthesis of methyl and isobutyl esters and the formation of red and black fruity fragrances of wine. <i>Fructobacillus</i> was closely related to the synthesis of aromatic alcohols and the generation of floral flavors.
Extracted Claims
4 claims extracted from this paper into the knowledge graph
Lactobacillus contributed to formation of red and black fruity fragrances
“Lactobacillus contributed to the synthesis of methyl and isobutyl esters and the formation of red and black fruity fragrances of wine.”
Fructobacillus related to generation of floral flavors
“Fructobacillus was closely related to the synthesis of aromatic alcohols and the generation of floral flavors.”
Lactobacillus contributed to synthesis of methyl and isobutyl esters
“Lactobacillus contributed to the synthesis of methyl and isobutyl esters and the formation of red and black fruity fragrances of wine.”