دورية أكاديمية
Pediococcus spp. - mediated competition interaction within Daqu microbiota determines the temperature formation and metabolic profiles.
| العنوان: | Pediococcus spp. - mediated competition interaction within Daqu microbiota determines the temperature formation and metabolic profiles. |
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| المؤلفون: | Wu S; Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China.; Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China., Lu J; Guizhou Guotai Liquor Group Co. Ltd., Zunyi, Guizhou, China., Li C; Guizhou Guotai Liquor Group Co. Ltd., Zunyi, Guizhou, China., Du H; Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China.; Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China., Xu Y; Lab of Brewing Microbiology and Applied Enzymology, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu, China.; Key Laboratory of Industrial Biotechnology of Ministry of Education, Jiangnan University, Wuxi, Jiangsu, China. |
| المصدر: | Applied and environmental microbiology [Appl Environ Microbiol] 2024 Apr 17; Vol. 90 (4), pp. e0179023. Date of Electronic Publication: 2024 Mar 20. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: American Society for Microbiology Country of Publication: United States NLM ID: 7605801 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1098-5336 (Electronic) Linking ISSN: 00992240 NLM ISO Abbreviation: Appl Environ Microbiol Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Washington, American Society for Microbiology. |
| مواضيع طبية MeSH: | Pediococcus* , Microbiota*/physiology, Temperature ; Alcoholic Beverages/analysis ; Fermentation ; Fungi/physiology ; Metabolome ; Saccharomyces cerevisiae |
| مستخلص: | Fermented microbiota is critical to the formation of microenvironment and metabolic profiles in spontaneous fermentation. Microorganisms generate a diverse array of metabolites concurrent with the release of heat energy. In the case of Daqu fermentation, the peak temperature exceeded 60°C, forming a typical high-temperature fermentation system known as high-temperature Daqu. However, microorganisms that cause the quality variation in Daqu and how they affect the functional microbiota and microenvironment in the fermentation process are not yet clear. This study adopted high-throughput sequencing and monitored the dynamic fluctuations of metabolites and environmental factors to identify the pivotal microorganism responsible for the alterations in interaction patterns of functional keystone taxa and quality decline in the fermentation system of different operational areas during the in situ fermentation process that had been mainly attributed to operational taxonomic unit (OTU)_22 ( Pediococcus acidilactici ). Additionally, we used isothermal microcalorimetry, plate inhibition experiments, and in vitro simulation fermentation experiments to explore the impact of Pediococcus spp. on heat generation, microorganisms, and metabolite profiles. Results showed the heat peak generated by Pediococcus spp. was significantly lower than that of Bacillus spp., filamentous fungi, and yeast. In addition, the preferential growth of P. acidilactici strain AA3 would obviously affect other strains to colonize through competition, and its metabolites made a significant impact on filamentous fungi. The addition of P. acidilactici strain AA3 in simulated fermentation would cause the loss of pyrazines and acids in metabolites. These evidences showed that the overgrowth of Pediococcus spp. greatly influenced the formation of high temperatures and compounds in solid-state fermentation systems. Our work illustrated the vital impact of interaction variability mediated by Pediococcus spp. for microbial assembly and metabolites, as well as in forming temperature. These results emphasized the functional role of Daqu microbiota in metabolites and heat production and the importance of cooperation in improving the fermentation quality.IMPORTANCEThe stable and high-quality saccharifying and fermenting starter in traditional solid-state fermentation was the prerequisite for liquor brewing. An imbalance of microbial homeostasis in fermentation can adversely impact production quality. Identification of such critical microorganisms and verifying their associations with other fermentation parameters pose a challenge in a traditional fermentation environment. To enhance the quality of spontaneous fermented products, strategies such as bioaugmentation or the control of harmful microorganisms would be employed. This work started with the differences in high-temperature Daqu metabolites to explore a series of functional microorganisms that could potentially contribute to product disparities, and found that the differences in interactions facilitated directly or indirectly by Pediococcus spp. seriously affected the development of microbial communities and metabolites, as well as the formation of the microenvironment. This study not only identified functional microbiota in Daqu that affected fermentation quality, but also demonstrated how microorganisms interact to affect the fermentation system, which would provide guidance for microbial supervision in the actual production process. Besides, the application of isothermal microcalorimetry in this study was helpful for us to understand the heat production capacity of microorganisms and their adaptability to the environment. This study presented a commendable framework for improving and controlling the quality of traditional fermentation and inspired further investigations in similar systems. Competing Interests: The authors declare no conflict of interest. |
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| فهرسة مساهمة: | Keywords: Daqu; Pediococcus; keystone taxa; metabolites; microbial interaction; temperature |
| تواريخ الأحداث: | Date Created: 20240320 Date Completed: 20240418 Latest Revision: 20240925 |
| رمز التحديث: | 20240925 |
| مُعرف محوري في PubMed: | PMC11022566 |
| DOI: | 10.1128/aem.01790-23 |
| PMID: | 38506521 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1098-5336 |
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| DOI: | 10.1128/aem.01790-23 |