Staphylococcus saprophyticus on the fermentation of cigar filler tobacco leaves

[El Presidente]

I will publish the full report when it becomes available as it was a topic raised last week. 

 

The impact of Staphylococcus saprophyticus on the fermentation of cigar filler tobacco leaves and the dynamics of microbial community

 

Staphylococcus has garnered increasing attention for its role in improving fermentation results and promoting the biosynthesis of aromatic compounds. This study investigated the effects of exogenously introduced Staphylococcus saprophyticus on the microbial community structure, functional gene expression, and volatile aroma profiles during the fermentation of cigar filler leaves. The results demonstrated that S. saprophyticus significantly enhanced the accumulation of alcohols and ketones. LEfSe analysis identified Bacillus as a key differential genus in the inoculated group. Spearman correlation analysis revealed positive associations between Staphylococcus and Bacillus, as well as with key aroma compounds such as 1-methyl-4-(2-methyloxiranyl)-7-oxabicyclo [4.1.0] heptane and cis-6-nonenal. EGGNOG functional annotation indicated upregulation of carbohydrate and amino acid metabolism pathways. Additionally, CAZy analysis revealed increased abundance of glycosyltransferases and carbohydrate-binding modules, which may facilitate sugar conversion and utilization. These findings provide a theoretical basis for the application of exogenous microorganisms in cigar fermentation and offer insights into the regulation of microbial community structure for quality improvement.

 

Copyright: © 2025 Yao, Zhao, Li, Yu, Yang, Yang and Chen. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Lan Yao, Hubei University of Technology, Wuhan, China

[JDoughty]

This does not surprise me. The coffee industry is also doing some deep dives into the biological analysis of organisms present during fermentation as well as the deliberate artificial introduction of specific strains of yeast, bacteria and fungus during primary or secondary coffee bean fermentation. The overall take-home message seems to be that exogenous microorganisms in all types of fermentation are very much a thing, and controlling them including adding additional strains as well as subtracting or minimizing other strains may lead to a significant increase in desirable chemistry. 

[zacca]

I studied lactobacillus’ role in certain fermentations 30 years ago. I will say though the aromas were the opposite of pleasant. 🤢