High density process to cultivate Lactobacillus plantarum biomass using wheat stillage and sugar beet molasses
Electron. j. biotechnol
;
14(2): 6-6, Mar. 2011. ilus, tab
Article
in English
| LILACS
| ID: lil-591936
ABSTRACT
Background:
Owing to the growing interest in biofuels, the concept of a biorefinery where biomass is converted to a variety of useful products is gaining ground. We here present how distillery waste is combined with a by-product from a sugar production, molasses, to form a medium for the growth of Lactobacillus plantarum with yields and biomass densities comparable with conventional industrial media. Such approach enables a cost-effective utilization of the problematic wastewater from ethanol and a by-product from sugar production. It is the first approach that attempts to find low-cost media for the production of Lactobacillus plantarum biomass.Results:
This study suggests that sieved wheat stillage enriched by adding 1.77 g/l yeast extract and 10 percent molasses (v/v), with NH4OH used for pH adjustment, may be used as a media for large-scale cultivation of L. plantarum. Such composition of the medium permits a high density of lactic acid bacteria (1.6 x 10(10) cfu/ml) to be achieved.Conclusions:
The use of a fermentation medium consisting of distillery wastewater and molasses to obtain value-added products (such as LAB biomass and lactic acid) is a possible step for classical ethanol production to move towards a biorefinery model production in which all by and waste products are utilized to increase produced values and reduce waste production. This enables a cost-effective utilization of the problematic wastewater from ethanol and sugar production.
Full text:
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Index:
LILACS (Americas)
Main subject:
Triticum
/
Molasses
/
Lactobacillus plantarum
/
Hydroxides
Language:
English
Journal:
Electron. j. biotechnol
Journal subject:
Biotechnology
Year:
2011
Type:
Article
Affiliation country:
Poland
/
Sweden
Institution/Affiliation country:
Swedish University of Agricultural Sciences/SE
/
Wroclaw University of Economics/PL
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