Delactosed Whey Permeate as Substrate for Succinic Acid Fermentation by Actinobacillus succinogenes

Delactosed Whey Permeate as Substrate for Succinic Acid Fermentation by Actinobacillus succinogenes

Delactosed whey permeate (DLP) is the remnant after the concentration of deproteinized whey permeate and separation of the lactose. As the milk industry expands, the surplus of the waste product DLP increases. This work evaluates DLP for succinic acid production in batch cultures with mildly halotol...

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Bibliographic Details
Published in:Waste and biomass valorization Vol. 12; no. 10; pp. 5481 - 5489
Main Authors: Banger, Gizem, Kaya, Kerem, Omwene, Philip, Shakoory, Sheyda, Karagündüz, Ahmet, Keskinler, Bülent, Nikerel, Emrah
Format: Journal Article
Language:English
Published: Dordrecht Springer Netherlands 2021
Springer Nature B.V
Subjects:
Acid production
Acids
Chemical composition
Engineering
Environment
Environmental Engineering/Biotechnology
Fermentation
Industrial Pollution Prevention
Ionic strength
Lactose
Media
Original Paper
Osmosis
Osmotic pressure
Peptones
Renewable and Green Energy
Salinity tolerance
Sodium bicarbonate
Substrates
Succinic acid
Waste Management/Waste Technology
Whey
Energetics
Succinic acid
Delactosed whey permeate
Fermentation
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Summary:Delactosed whey permeate (DLP) is the remnant after the concentration of deproteinized whey permeate and separation of the lactose. As the milk industry expands, the surplus of the waste product DLP increases. This work evaluates DLP for succinic acid production in batch cultures with mildly halotolerant Actinobacillus succinogenes 130Z. The elemental composition of delactosed whey permeate is analysed, adjusted by supplementing with peptone and NaHCO 3 , and used in submerged fermentations. The obtained succinic acid yield with DLP based media is ranged between 0.62 and 0.67 gSA/gLactose, with minimal by-products. Growth (K x ) and non-growth (m ATP ) associated maintenance energies of A. succinogenes were estimated via ATP balance using batch fermentation data on both DLP media as well as conventional simulated media (TSB). For m ATP , the estimated value is 7.4 mmol/gDCW/h for DLP media, which is compatible with commercial TSB media. Herein, we clearly demonstrate use of delactosed whey permeate as a promising substrate for succinic acid fermentation, despite high ionic strength and osmotic pressure potential. Graphical abstract
ISSN:1877-2641
1877-265X
DOI:10.1007/s12649-021-01390-5