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Table 1 List of nomenclature

From: Microbial production of Propionic and Succinic acid from Sorbitol using Propionibacterium acidipropionici

Abbreviations

Meaning

Y X/S

Yield of biomass with respect to substrate (g g−1)

Y SA/S

Yield of succinic acid with respect to substrate (g g−1)

Y AA/S

Yield of acetic acid with respect to substrate (g g−1)

Y PA/S

Yield of propionic acid with respect to substrate (g g−1)

Y SA/X

Yield of succinic acid with respect to biomass (g g−1)

Y AA/X

Yield of acetic acid with respect to biomass (g g−1)

Y PA/X

Yield of propionic acid with respect to biomass (g g−1)

m

Cell maintenance (g g−1 h−1)

r s

Instantaneous substrate consumption rate (g h−1)

r SA

Instantaneous succinic acid production rate (g h−1)

r AA

Instantaneous acetic acid production rate (g h−1)

r PA

Instantaneous propionic acid production rate (g h−1)

r x

Instantaneous cell growth rate (g h−1)

μ s

Specific substrate consumption rate (h−1)

μ SA

Specific succinic acid production rate (h−1)

μ AA

Specific acetic acid production rate (h−1)

μ PA

Specific propionic acid production rate (h−1)

μ x

Specific cell growth rate (h−1)

DCW

Dry cell weight

OD 600

Optical density at 600 nm

P/A

Ratio of propionic to acetic acid (mol mol−1 or g g−1)

S/A

Ratio of succinic to acetic acid (mol mol−1 or g g−1)

FBB

Fibrous bed bioreactor