Advances in Grain Respiration Detection

A Grain Fungal Spoilage Test

Measure Grain Spoilage Before You See The Mold.

The incredible conundrum of grain production is that even while you can’t see it, micro-organisms are at work spoiling your hard-earned efforts, creating grain spoilage and loss that’s hard to recoup. The Solvita® Fungal Spoilage Test for grain gives you the tools to change all that, by detecting mold even before it’s visible – it’s like an early warning signal for fungal activity. This revolutionary grain spoilage test measures grain respiration, a unique measurement that helps predict spoilage before it happens.

Grain storage studies have shown that testing grain respiration – the release of carbon dioxide (CO2 from incubated grain) – can accurately predict the remaining grain storage life and the grain’s susceptibility to spoilage. Solvita® combines these findings with modern technology in a reliable, simple-to-use process that you can perform quickly and economically. It can monitor and alert you to unusually high fungal spoilage.

Grain Respiration

Use the Solvita® Grain Respiration Test to:

  • Reduce the likelihood of harmful spoilage of grain
  • Predict the storage life remaining at current conditions
  • Detect spoilage
  • Measure the extent of spoilage
  • Identify where spoilage occurs so grain can be quickly used
  • Evaluate the quality of on-farm grain storage
  • Test with no extra lab equipment required
  • Provide information to develop an effective grain management strategy

Grain Respiration Testing
In early stages of grain spoilage (left) you may not be able to see mold, but enhanced CO2-respiration will be evident – and the Solvita® grain test will detect it. By mid term spoilage (center) grain dry matter loss has exceeded 0.5%. Terminal spoilage (right) follows quickly, and the grain will be a total loss.

At all points of the grain process – pre-harvest, harvest, storage, processing and export, the Solvita® grain test gives you valuable info on spoilage potential to help you leverage your grain for maximum value:

  • Measure fungal levels in the field
  • Check grain at harvest
  • Test stored grain for signs of spoilage
  • Determine grain suitability for export – test loaded rail cars or barges

Publications Demonstrating Solvita® Grain Storage Test



Study Period


Iowa State University 2015 , Presentation at the 2015 ASABE Annual International Meeting, New Orleans, July 26-29, 2015
Purdue University 2015 The Effect of Storage Temperature and Percentage of Condensed Distillers Solubles on the Shelf-Life of Distillers Wet Grains Stored Aerobically, Ileleji, K.E.; McClurkin, J.D., Journal of Stored Products Research,, request by email
Woods End Laboratories 2002-2013 Research Summary; , Woods End Laboratories, 2013.
Purdue University 2008-2010 , Moog, D.J.P. et al, Journal of Cereal Chemistry, 2010: 87(3):182–189, 2010, doi:10.1094/CCHEM-87-3-0182
Purdue University 2007-2008 , Strohshine, R.L. et al, Journal of Cereal Chemistry, 2008: 85(1):19–26, doi:10.1094 / CCHEM-85-1-0019
Iowa State University 2006-2007 , Bern C.J. et al, Journal of Applied Engineering in Agriculture, Vol. 22(1): 81-86, 2006, doi: 10.13031/2013.20174
Purdue University 2002-2006
Titus Grain Inspection Service 2006-2008 Refinement of spreadsheet predictor for 0.5% dry matter loss (one grade debit) due to fungal spoilage