Article (Scientific journals)
Engineering Synthetic Microbial Communities through a Selective Biofilm Cultivation Device for the Production of Fermented Beverages
Ly, Sokny; Kakahi, Bajoul; Mith, Hasika et al.
2019In Microorganisms
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Keywords :
microbial communities; biofilm; fermented beverage; volatolomics
Abstract :
[en] Production of Cambodian rice wine involves complex microbial consortia. Indeed, previous studies focused on traditional microbial starters used for this product revealed that three microbial strains with complementary metabolic activities are required for an e ective fermentation, i.e., filamentous fungi (Rhizopus oryzae), yeast (Saccharomyces cerevisiae), and lactic acid bacteria (Lactobacillus plantarum). Modulating the ratio between these three key players led to significant di erences, not only in terms of ethanol and organic acid production, but also on the profile of volatile compounds, in comparison with natural communities. However, we observed that using an equal ratio of spores/cells of the three microbial strains during inoculation led to flavor profile and ethanol yield close to that obtained through the use of natural communities. Compartmentalization of metabolic tasks through the use of a biofilm cultivation device allows further improvement of the whole fermentation process, notably by increasing the amount of key components of the aroma profile of the fermented beverage (i.e., mainly phenylethyl alcohol, isobutyl alcohol, isoamyl alcohol, and 2-methyl-butanol) and reducing the amount of o -flavor compounds. This study is a step forward in our understanding of interkingdom microbial interactions with strong application potential in food biotechnology.
Disciplines :
Biotechnology
Microbiology
Chemistry
Author, co-author :
Ly, Sokny ;  Université de Liège - ULiège > Doct. sc. agro. & ingé. biol. (Paysage)
Kakahi, Bajoul
Mith, Hasika ;  Université de Liège - ULiège > Doct. sc. vété. (Bologne)
Phat, Chanvorleak
Fifani, Barbara
Kenne, Tierry
Fauconnier, Marie-Laure  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie des agro-biosystèmes
Delvigne, Frank  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Microbial, food and biobased technologies
Language :
English
Title :
Engineering Synthetic Microbial Communities through a Selective Biofilm Cultivation Device for the Production of Fermented Beverages
Publication date :
20 July 2019
Journal title :
Microorganisms
eISSN :
2076-2607
Publisher :
Molecular Diversity Preservation International (MDPI), Basel, Switzerland
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 21 July 2019

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