What question did this study set out to answer?

To measure the effective diffusivity of lactose in active acidogenic biofilms and identify the structural factors that govern nutrient transport.

March 25, 1993Biotechnology and Bioengineering

Diffusion of lactose in acidogenic biofilms

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Authors

JYJian Zhen YuShenyang Ligong University KPK. L. PinderUniversity of British Columbia

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Implication

Experimental study reveals effective lactose diffusivity decreases to 65% in acidogenic biofilms, indicating reduction stems from solid biomass volume rather than channel tortuosity.

Key Points

To measure the effective diffusivity of lactose in active acidogenic biofilms and identify the structural factors that govern nutrient transport.
Measured steady-state lactose concentrations at the surface and center of living bacterial aggregates using a custom diffusion cell operated at 35 °C and pH 4.6.
Calculated effective diffusivity using a reaction-diffusion model and determined biofilm void volume and channel properties.
Effective diffusivity of lactose in active biofilms reached approximately 65% of the diffusivity observed in free aqueous solution.
Active biofilms exhibited an estimated 66% void volume of transport channels, showing that reduction in diffusivity is predominantly driven by solid biomass fraction rather than channel tortuosity.

Cite This Study

Yu et al. (1993) studied this question.

synapsesocial.com/papers/6a903cb84ca7c096eec90d75 https://doi.org/10.1002/bit.260410708

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Implication

Experimental study reveals effective lactose diffusivity decreases to 65% in acidogenic biofilms, indicating reduction stems from solid biomass volume rather than channel tortuosity.

Diffusion of lactose in acidogenic biofilms

Discussion

Member takes

Implication

Key Points

Cite This Study

Diffusion of lactose in acidogenic biofilms

Discussion

Member takes

Implication

Key Points

Cite This Study

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