What question did this study set out to answer?

To elucidate the intracellular metabolic fluxes and substrate utilization mechanisms of acetic acid bacteria under conditions that simulate cocoa pulp fermentation.

May 17, 2014Applied and Environmental MicrobiologyOpen Access

The Key to Acetate: Metabolic Fluxes of Acetic Acid Bacteria under Cocoa Pulp Fermentation-Simulating Conditions

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To elucidate the intracellular metabolic fluxes and substrate utilization mechanisms of acetic acid bacteria under conditions that simulate cocoa pulp fermentation.
Conducted parallel 13C isotope labeling experiments to trace carbon fluxes in acetic acid bacteria grown on complex media containing lactate and ethanol.
Evaluated bacterial growth and acetate yield across pure cultures and mixed microbial consortia containing lactic acid bacteria and yeasts.
Demonstrated functional separation of metabolism wherein ethanol is converted almost entirely to acetate, while lactate is directed into acetoin and biomass production.
Identified that gluconeogenesis relies on pyruvate phosphate dikinase due to the absence of phosphoenolpyruvate carboxykinase and malic enzymes.
Observed maximal bacterial growth and peak acetate synthesis when lactic acid bacteria and yeasts coexisted to supply an optimal balance of lactate and ethanol.

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Implication

Metabolic flux analysis reveals separated substrate metabolism in acetic acid bacteria, indicating balanced yeast and lactic acid bacteria inputs optimize cocoa fermentation.

Cite This Study

Adler et al. (2014) studied this question.

synapsesocial.com/papers/6a764ab89af63782f5bcbaf4 https://doi.org/10.1128/aem.01048-14

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Implication

Metabolic flux analysis reveals separated substrate metabolism in acetic acid bacteria, indicating balanced yeast and lactic acid bacteria inputs optimize cocoa fermentation.

The Key to Acetate: Metabolic Fluxes of Acetic Acid Bacteria under Cocoa Pulp Fermentation-Simulating Conditions

Key Points

Discussion

Implication

Cite This Study

The Key to Acetate: Metabolic Fluxes of Acetic Acid Bacteria under Cocoa Pulp Fermentation-Simulating Conditions

Key Points

Discussion

Implication

Cite This Study

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