Microvinification--how small can we go?

Appl Microbiol Biotechnol. 2011 Mar;89(5):1621-8. doi: 10.1007/s00253-010-2992-6. Epub 2010 Nov 13.

Abstract

High-throughput methodologies to screen large numbers of microorganisms necessitate the use of small-scale culture vessels. In this context, an increasing number of researchers are turning to microtiter plate (MTP) formats to conduct experiments. MTPs are now widely used as a culturing vessel for phenotypic screening of aerobic laboratory cultures, and their suitability has been assessed for a range of applications. The work presented here extends these previous studies by assessing the metabolic footprint of MTP fermentation. A comparison of Chardonnay grape juice fermentation in MTPs with fermentations performed in air-locked (self-induced anaerobic) and cotton-plugged (aerobic) flasks was made. Maximum growth rates and biomass accumulation of yeast cultures grown in MTPs were indistinguishable from self-induced anaerobic flask cultures. Metabolic profiles measured differed depending on the metabolite. While glycerol and acetate accumulation mirrored that of self-induced anaerobic cultures, ethanol accumulation in MTP ferments was limited by the increased propensity of this volatile metabolite for evaporation in microlitre-scale culture format. The data illustrates that microplate cultures can be used as a replacement for self-induced anaerobic flasks in some instances and provide a useful and economical platform for the screening of industrial strains and culture media.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Ethanol / metabolism
  • Food Industry / methods*
  • High-Throughput Screening Assays / methods
  • Industrial Microbiology / methods*
  • Plant Extracts / metabolism
  • Vitis / chemistry
  • Wine / microbiology*
  • Yeasts / growth & development*
  • Yeasts / metabolism*

Substances

  • Plant Extracts
  • Ethanol