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A model predicting the duration of safe storage period in relation to grain temperature

A model predicting the duration of safe storage period in relation to grain temperature and Aw was produced. The domain of validity is covering grain condition in Northern and middle Europe.

A mathematical model based on the two controlled variables in stored grain bulks: temperature and activity of water, was developed from experimental data on grain (malting barley) respiration rate (O2 consumption and CO2 production. This model enables the calculation of the rise in grain temperature to the limit of 35°C, which corresponds to the threshold for the deterioration of seed viability.

It was used to create another model, usable graphically or by computer, and enabling the assessment of the "safe storage life" of malting barley as dependent on moisture content and temperature. The acceptable threshold for viability of malting barley was chosen at 95% but it can be fixed at any specific level in the model.

Reported by

Biotechnological Institute
Holbergsvej 10
6000 Kolding
Denmark
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Thèmes

Agriculture - Policies