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https://open.uns.ac.rs/handle/123456789/8705
Title: | Integrated production of lactic acid and biomass on distillery stillage | Authors: | Đukić-Vuković, Aleksandra Mojović, Ljiljana Vukašinović-Sekulić, Maja Nikolić, Svetlana Pejin, Jelena |
Issue Date: | 1-Sep-2013 | Publisher: | Springer | Journal: | Bioprocess and Biosystems Engineering | Abstract: | The possibilities of parallel lactic acid and biomass production in batch and fed-batch fermentation on distillery stillage from bioethanol production were studied. The highest lactic acid yield and productivity of 92.3 % and 1.49 g L-1 h-1 were achieved in batch fermentation with initial sugar concentration of 55 g L-1. A significant improvement of the process was achieved in fed-batch fermentation where the concentration of lactic acid was increased to 47.6 % and volumetric productivity for 21 % over the batch process. A high number of Lactobacillus rhamnosus ATCC 7469 viable cells of 109 CFU ml-1 was attained at the end of fed-batch fermentation. The survival of 92.9 % of L. rhamnosus cells after 3 h of incubation at pH 2.5 validated that the fermentation media remained after lactic acid removal could be used as a biomass-enriched animal feed thus making an additional value to the process. © 2012 Springer-Verlag Berlin Heidelberg. | URI: | https://open.uns.ac.rs/handle/123456789/8705 | ISSN: | 16157591 | DOI: | 10.1007/s00449-012-0842-x |
Appears in Collections: | TF Publikacije/Publications |
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