Use of wheat straw and chicken feather hydrolysates as a complete medium for lactic acid production

Lucia Gharwalová, Leona Paulová, Petra Patáková, Barbora Branská and Karel Melzoch
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Lucia Gharwalová: Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
Petra Patáková: Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
Barbora Branská: Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic
Karel Melzoch: Department of Biotechnology, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic

Czech Journal of Food Sciences, 2018, vol. 36, issue 2, 146-153

Abstract: Biotechnological production of lactic acid has experienced a boom that is hindered only by the lack of low-cost, abundant material that might be used as a substrate for lactic acid bacteria. Such material should contain not only carbon but also complex nitrogen sources, amino acids and vitamins necessary for the balanced growth of the bacteria. Here, for the first time, a combination of hydrolysates of wheat straw and chicken feathers was used as a complete waste cultivation medium for lactic acid production. It was shown to be a promising substrate for lactic acid production, reducing the medium price by 73% compared with MRS broth, providing more than 98% lactic acid yield and high productivity (2.28 ± 0.68 g/l/h) in a fed-batch process using Lactobacillus reuterii LHR14.

Keywords: agricultural waste; fermentation; food industry wastes; lactic acid bacteria (search for similar items in EconPapers)
Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:36:y:2018:i:2:id:461-2017-cjfs

DOI: 10.17221/461/2017-CJFS

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