A closed loop for municipal organic solid waste by lactic acid fermentation

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

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


In order to investigate the feasibility of producing lactic acid from municipal organic solid waste different pH values (4-7) and temperatures (37. °C and 55. °C) were tested. For the evaluation of fermentation conditions the chemical, physical, and microbial characters were monitored over a period of 7. days. Quantitative real time PCR, PCR-DGGE, and next generation sequencing of a 16S rRNA gene library were applied to identify the key players of the lactic acid production and their association. Lactobacillus acidophilus and its closest relatives were found to be efficient lactic acid producers (>300. mM) under most suitable fermentation conditions tested in this study: 37. °C with either uncontrolled pH or at a pH of 5. These data provide the first step in the realization of the idea "reuse, reduce, and recycle" of municipal organic solid waste.

Original languageEnglish
Pages (from-to)142-151
Number of pages10
JournalBioresource Technology
StatePublished - 1 Jan 2015
Externally publishedYes


  • Fermentation
  • Lactic acid bacteria
  • Lactobacillus
  • Organic residues
  • Unsterilized biowaste

ASJC Scopus subject areas

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


Dive into the research topics of 'A closed loop for municipal organic solid waste by lactic acid fermentation'. Together they form a unique fingerprint.

Cite this