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Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports

Authorized Users Only
2018
Authors
Mladenović, Dragana
Pejin, Jelena
Kocić-Tanackov, Sunčica
Radovanović, Željko
Djukić-Vuković, Aleksandra
Mojović, Ljiljana
Article (Published version)
Metadata
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Abstract
In this study, the production of lactic acid (LA) on sugar beet molasses enriched potato stillage by immobilized Lactobacillus paracasei NRRL B-4564 was examined. Three agro-industrial materials, such as sunflower seed hull (SSH), brewers' spent grain (BSG), and sugar beet pulp (SBP) were studied as carriers for cell immobilization. The carriers were physically characterized in terms of water adsorption index (WAI), critical humidity point (CHP) and porosity. Further, the stability and efficiency of the immobilized biocatalysts were evaluated in repeated batch fermentation of molasses enriched potato stillage and compared with free cell system. A strong cell attachment onto agro-industrial supports allowed easy separation from the fermentation media and efficient biocatalyst reuse in five successive batch cycles. The highest cell number attached on the support surface during the fermentation was detected for material with higher WAI and lower CHP. Porosimetry measurements showed that t...he attachment of L. paracasei cells to support materials and overall LA productivities achieved with different immobilized biocatalysts were not determined by the support porosity and surface morphology, but with the material characteristics such as electrostatic charge, chemical composition and hydrophilicity. LA productivity of 1.48 g/L h, maximal LA concentration of 80.10 g/L and average yield coefficient of 0.97 g/g were achieved in fermentation of molasses enriched potato stillage using SBP as a support material, followed by BSG and SSH. The studied approach showed to be an interesting alternative strategy for increasing the LA productivities on low-cost and abundant substrate.

Keywords:
Lactic acid / Sunflower seed hull / Spent grain / Sugar beet pulp / Microbial immobilization / Lactobacillus paracasei NRRL B-4564
Source:
Industrial Crops and Products, 2018, 124, 142-148
Publisher:
  • Elsevier Science Bv, Amsterdam
Funding / projects:
  • Production of lactic acid and probiotics on waste products of food and agricultural industry (RS-31017)
  • Scientific and Technological Collaboration of Republic of Serbia and PR China [I-1/2018]

DOI: 10.1016/j.indcrop.2018.07.081

ISSN: 0926-6690

WoS: 000447569100018

Scopus: 2-s2.0-85050889859
[ Google Scholar ]
18
9
URI
http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3984
Collections
  • Radovi istraživača / Researchers’ publications (TMF)
  • Radovi istraživača (Inovacioni centar) / Researchers’ publications (Innovation Centre)
Institution/Community
Tehnološko-metalurški fakultet
TY  - JOUR
AU  - Mladenović, Dragana
AU  - Pejin, Jelena
AU  - Kocić-Tanackov, Sunčica
AU  - Radovanović, Željko
AU  - Djukić-Vuković, Aleksandra
AU  - Mojović, Ljiljana
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3984
AB  - In this study, the production of lactic acid (LA) on sugar beet molasses enriched potato stillage by immobilized Lactobacillus paracasei NRRL B-4564 was examined. Three agro-industrial materials, such as sunflower seed hull (SSH), brewers' spent grain (BSG), and sugar beet pulp (SBP) were studied as carriers for cell immobilization. The carriers were physically characterized in terms of water adsorption index (WAI), critical humidity point (CHP) and porosity. Further, the stability and efficiency of the immobilized biocatalysts were evaluated in repeated batch fermentation of molasses enriched potato stillage and compared with free cell system. A strong cell attachment onto agro-industrial supports allowed easy separation from the fermentation media and efficient biocatalyst reuse in five successive batch cycles. The highest cell number attached on the support surface during the fermentation was detected for material with higher WAI and lower CHP. Porosimetry measurements showed that the attachment of L. paracasei cells to support materials and overall LA productivities achieved with different immobilized biocatalysts were not determined by the support porosity and surface morphology, but with the material characteristics such as electrostatic charge, chemical composition and hydrophilicity. LA productivity of 1.48 g/L h, maximal LA concentration of 80.10 g/L and average yield coefficient of 0.97 g/g were achieved in fermentation of molasses enriched potato stillage using SBP as a support material, followed by BSG and SSH. The studied approach showed to be an interesting alternative strategy for increasing the LA productivities on low-cost and abundant substrate.
PB  - Elsevier Science Bv, Amsterdam
T2  - Industrial Crops and Products
T1  - Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports
EP  - 148
SP  - 142
VL  - 124
DO  - 10.1016/j.indcrop.2018.07.081
ER  - 
@article{
author = "Mladenović, Dragana and Pejin, Jelena and Kocić-Tanackov, Sunčica and Radovanović, Željko and Djukić-Vuković, Aleksandra and Mojović, Ljiljana",
year = "2018",
abstract = "In this study, the production of lactic acid (LA) on sugar beet molasses enriched potato stillage by immobilized Lactobacillus paracasei NRRL B-4564 was examined. Three agro-industrial materials, such as sunflower seed hull (SSH), brewers' spent grain (BSG), and sugar beet pulp (SBP) were studied as carriers for cell immobilization. The carriers were physically characterized in terms of water adsorption index (WAI), critical humidity point (CHP) and porosity. Further, the stability and efficiency of the immobilized biocatalysts were evaluated in repeated batch fermentation of molasses enriched potato stillage and compared with free cell system. A strong cell attachment onto agro-industrial supports allowed easy separation from the fermentation media and efficient biocatalyst reuse in five successive batch cycles. The highest cell number attached on the support surface during the fermentation was detected for material with higher WAI and lower CHP. Porosimetry measurements showed that the attachment of L. paracasei cells to support materials and overall LA productivities achieved with different immobilized biocatalysts were not determined by the support porosity and surface morphology, but with the material characteristics such as electrostatic charge, chemical composition and hydrophilicity. LA productivity of 1.48 g/L h, maximal LA concentration of 80.10 g/L and average yield coefficient of 0.97 g/g were achieved in fermentation of molasses enriched potato stillage using SBP as a support material, followed by BSG and SSH. The studied approach showed to be an interesting alternative strategy for increasing the LA productivities on low-cost and abundant substrate.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Industrial Crops and Products",
title = "Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports",
pages = "148-142",
volume = "124",
doi = "10.1016/j.indcrop.2018.07.081"
}
Mladenović, D., Pejin, J., Kocić-Tanackov, S., Radovanović, Ž., Djukić-Vuković, A.,& Mojović, L.. (2018). Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports. in Industrial Crops and Products
Elsevier Science Bv, Amsterdam., 124, 142-148.
https://doi.org/10.1016/j.indcrop.2018.07.081
Mladenović D, Pejin J, Kocić-Tanackov S, Radovanović Ž, Djukić-Vuković A, Mojović L. Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports. in Industrial Crops and Products. 2018;124:142-148.
doi:10.1016/j.indcrop.2018.07.081 .
Mladenović, Dragana, Pejin, Jelena, Kocić-Tanackov, Sunčica, Radovanović, Željko, Djukić-Vuković, Aleksandra, Mojović, Ljiljana, "Lactic acid production on molasses enriched potato stillage by Lactobacillus paracasei immobilized onto agro-industrial waste supports" in Industrial Crops and Products, 124 (2018):142-148,
https://doi.org/10.1016/j.indcrop.2018.07.081 . .

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