Effects of splits content on dry matter loss rates of soybeans measured using a static grain respiration measurement system

Ana B. Gatsakos, Thomas B. Scatolini, Mary Grace C. Danao, Richard S. Gates, Kent D. Rausch

Research output: Contribution to journalArticlepeer-review


The objectives of this study were to compare the effects of 0% to 16% (w/w) splits content (xs) of soybeans stored at 35°C and 18% moisture content (w.b.) on dry matter loss rates (vDML) and to determine a splits multiplier (MS) for soybeans stored at these conditions, similar to the damage multiplier (MD) used in ASABE Standard D535 for shelled corn. Effects of percentage by weight splits (xs) on MS and safe storage time are expected to be greater than MD for corn because soybeans are prone to cracking and splitting, lipid oxidation, and protein degradation, all of which lead to grain dry matter and quality losses. Results indicated that vDML increased with increasing xs, and the mean vDML was 1.5 times greater for samples with 16% splits than for samples with 4% splits. The MS for soybeans was linearly correlated with xs, decreasing from 1.0 to 0.60 for 0% to 16% splits, respectively. Soybeans appeared to be more sensitive to percent by weight splits than corn was to the presence of damaged kernels. In Standard D535, the MD for corn only decreased from 1.0 to 0.8 when percent (w/w) damaged kernel content increased from 30% to 40%. In comparison, it should be noted that damage to soybeans was defined differently from damage to corn. This research is useful in defining MS for 18% moisture content soybeans stored at 35°C under hermetic conditions. The procedures outlined in this article may be used in the future to more formally define a soybean MS that covers a wider range of moisture contents, storage conditions, and possibly an MD based on other factors included in the USDA definitions of damaged soybean kernels.

Original languageEnglish (US)
Pages (from-to)1365-1372
Number of pages8
JournalTransactions of the ASABE
Issue number4
StatePublished - 2021


  • Allowable storage time
  • Grain quality
  • Splits multiplier

ASJC Scopus subject areas

  • Forestry
  • Food Science
  • Biomedical Engineering
  • Agronomy and Crop Science
  • Soil Science


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