Lactic acid fermentation within a cascading approach for biowaste treatment

Maraike Probst; Janette Walde; Thomas Pümpel; Andreas Otto Wagner; Irene Schneider; Heribert Insam

doi:10.1007/s00253-015-6414-7

Lactic acid fermentation within a cascading approach for biowaste treatment

Maraike Probst, Janette Walde, Thomas Pümpel, Andreas Otto Wagner, Irene Schneider, Heribert Insam

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

Limited availability of resources and increased amounts of waste coupled with an ever-increasing demand for raw materials are typical characteristics of our times. As such, there is an urgent need to accordingly update waste treatment technology. The aim of this study was to determine whether a separate treatment of the liquid and the solid fraction of biowaste could enhance overall efficiency. Liquid fractions obtained from two different separation procedures were fermented at a pH of 5 and uncontrolled pH conditions for 72 h. The fermentation conditions leading to highest lactic acid productivity and yield were evaluated. The substrates gained by both separation procedures showed efficient lactic acid production up to <25 g L⁻¹. The pH control increased lactic acid concentration by about 27 %. Furthermore, quantitative real-time PCR analyses revealed stronger Lactobacilli growth in these fermentations. As identified via Illumina sequencing Lactobacillus delbrueckii and its closest relatives seemed to drive the fermentation independent of the substrate. These results could help to improve today’s resourcing concept by providing a separate treatment of the liquid and solid biowaste fraction.

Original language	English
Pages (from-to)	3029-3040
Number of pages	12
Journal	Applied Microbiology and Biotechnology
Volume	99
Issue number	7
DOIs	https://doi.org/10.1007/s00253-015-6414-7
State	Published - 19 Mar 2015
Externally published	Yes

Keywords

Biorefinery
Lactobacillus
Microbiome
Miseq Illumina sequencing
Municipal solid organic waste

ASJC Scopus subject areas

Biotechnology
Applied Microbiology and Biotechnology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s00253-015-6414-7

Cite this

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abstract = "Limited availability of resources and increased amounts of waste coupled with an ever-increasing demand for raw materials are typical characteristics of our times. As such, there is an urgent need to accordingly update waste treatment technology. The aim of this study was to determine whether a separate treatment of the liquid and the solid fraction of biowaste could enhance overall efficiency. Liquid fractions obtained from two different separation procedures were fermented at a pH of 5 and uncontrolled pH conditions for 72 h. The fermentation conditions leading to highest lactic acid productivity and yield were evaluated. The substrates gained by both separation procedures showed efficient lactic acid production up to <25 g L−1. The pH control increased lactic acid concentration by about 27 %. Furthermore, quantitative real-time PCR analyses revealed stronger Lactobacilli growth in these fermentations. As identified via Illumina sequencing Lactobacillus delbrueckii and its closest relatives seemed to drive the fermentation independent of the substrate. These results could help to improve today{\textquoteright}s resourcing concept by providing a separate treatment of the liquid and solid biowaste fraction.",

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AU - Walde, Janette

AU - Pümpel, Thomas

AU - Wagner, Andreas Otto

AU - Schneider, Irene

AU - Insam, Heribert

PY - 2015/3/19

Y1 - 2015/3/19

N2 - Limited availability of resources and increased amounts of waste coupled with an ever-increasing demand for raw materials are typical characteristics of our times. As such, there is an urgent need to accordingly update waste treatment technology. The aim of this study was to determine whether a separate treatment of the liquid and the solid fraction of biowaste could enhance overall efficiency. Liquid fractions obtained from two different separation procedures were fermented at a pH of 5 and uncontrolled pH conditions for 72 h. The fermentation conditions leading to highest lactic acid productivity and yield were evaluated. The substrates gained by both separation procedures showed efficient lactic acid production up to <25 g L−1. The pH control increased lactic acid concentration by about 27 %. Furthermore, quantitative real-time PCR analyses revealed stronger Lactobacilli growth in these fermentations. As identified via Illumina sequencing Lactobacillus delbrueckii and its closest relatives seemed to drive the fermentation independent of the substrate. These results could help to improve today’s resourcing concept by providing a separate treatment of the liquid and solid biowaste fraction.

AB - Limited availability of resources and increased amounts of waste coupled with an ever-increasing demand for raw materials are typical characteristics of our times. As such, there is an urgent need to accordingly update waste treatment technology. The aim of this study was to determine whether a separate treatment of the liquid and the solid fraction of biowaste could enhance overall efficiency. Liquid fractions obtained from two different separation procedures were fermented at a pH of 5 and uncontrolled pH conditions for 72 h. The fermentation conditions leading to highest lactic acid productivity and yield were evaluated. The substrates gained by both separation procedures showed efficient lactic acid production up to <25 g L−1. The pH control increased lactic acid concentration by about 27 %. Furthermore, quantitative real-time PCR analyses revealed stronger Lactobacilli growth in these fermentations. As identified via Illumina sequencing Lactobacillus delbrueckii and its closest relatives seemed to drive the fermentation independent of the substrate. These results could help to improve today’s resourcing concept by providing a separate treatment of the liquid and solid biowaste fraction.

KW - Biorefinery

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Lactic acid fermentation within a cascading approach for biowaste treatment

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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