Fermentative utilization of coffee mucilage using Bacillus coagulans and investigation of down-stream processing of fermentation broth for optically pure L(+)-lactic acid production

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • Anna-Katrin Neu
  • Daniel Pleissner
  • Kerstin Mehlmann
  • Roland Schneider
  • Gloria Ines Puerta-Quintero
  • Joachim Venus
In this study, mucilage, a residue from coffee production, was investigated as substrate in fermentative l(+)-lactic acid production. Mucilage was provided as liquid suspension consisting glucose, galactose, fructose, xylose and sucrose as free sugars (up to 60 g L−1), and used directly as medium in Bacillus coagulans batch fermentations carried out at 2 and 50 L scales. Using mucilage and 5 g L−1 yeast extract as additional nitrogen source, more than 40 g L−1 lactic acid was obtained. Productivity and yield were 4–5 g L−1 h−1 and 0.70–0.77 g lactic acid per g of free sugars, respectively, irrespective the scale. Similar yield was found when no yeast extract was supplied, the productivity, however, was 1.5 g L−1 h−1. Down-stream processing of culture broth, including filtration, electrodialysis, ion exchange chromatography and distillation, resulted in a pure lactic acid formulation containing 930 g L−1 l(+)-lactic acid. Optical purity was 99.8%.
Original languageEnglish
JournalBioresource Technology
Volume211
Issue numberJuli
Pages (from-to)398-405
Number of pages8
ISSN0960-8524
DOIs
Publication statusPublished - 01.07.2016

    Research areas

  • Bacillus coagulans, Nutrient recovery, Renewable resources, Coffee mucilage, Waste utilization
  • Chemistry

Recently viewed

Publications

  1. Big Data - Characterizing an Emerging Research Field using Topic Models
  2. Improving Human-Machine Interaction
  3. The Making of MEZ - Multilingual Development:
  4. Governing Objects from a Distance
  5. Individual differences and cognitive load theory
  6. Applying Quarter-Vehicle Model Simulation for Road Elevation Measurements Utilizing the Vehicle Level Sensor
  7. Optimal control strategies for PMSM with a decoupling super twisting SMC and inductance estimation in the presence of saturation
  8. Tree mixtures mediate negative effects of introduced tree species on bird taxonomic and functional diversity
  9. CHANGING RECREATIONAL ACTIVITIES FOR REDUCING INSOMNIA SEVERITY? RESULTS FROM A SERIAL MEDIATION ANALYSIS ON THE IMPACT OF RECREATIONAL BEHAVIOR AS A MECHANISM OF CHANGE IN DIGITAL INTERVENTIONS FOR INSOMNIA
  10. A Two-Stage Sliding-Mode High-Gain Observer to Reduce Uncertainties and Disturbances Effects for Sensorless Control in Automotive Applications
  11. Action Errors, Error Management, and Learning in Organizations
  12. What is normal?
  13. A Stacked Planar Sensor Concept for Minimally Invasive Plasma Monitoring
  14. Masked Autoencoder Pretraining for Event Classification in Elite Soccer
  15. How to attract visitors with strategic, value-based experience design
  16. Assessing authenticity in modelling test items: deriving a theoretical model
  17. From Planning to Implementation: Top-Down and Bottom-Up Approaches for Collaborative Watershed Management
  18. Endemic predators, invasive prey and native diversity
  19. Properties of some overlapping self-similar and some self-affine measures
  20. Early-Career Researchers’ Perceptions of the Prevalence of Questionable Research Practices, Potential Causes, and Open Science
  21. Model-based wind turbine control design with power tracking capability
  22. Guest Editorial
  23. How to move the transition to sustainable food consumption towards a societal tipping point
  24. General Patterns and Conclusions
  25. Control oriented modeling of DCDC converters
  26. Set-Oriented and Finite-Element Study of Coherent Behavior in Rayleigh-Bénard Convection
  27. Tree phylogenetic diversity structures multitrophic communities
  28. Predictors of adherence to public health behaviors for fighting COVID-19 derived from longitudinal data