Discussion
Consider the following statements about safe storage:
1. Safe moisture follows from the equilibrium relative humidity at which moulds grow.
2. Moisture and temperature compound one another in setting storage life.
3. Oilseeds are stored at a higher moisture content than cereals.
Which of the statements given above is or are correct?
Answer: C
Correct answer: 1 and 2 only
Statement 1 is correct: safe moisture is derived from the equilibrium relative humidity at which storage moulds grow, about 70 per cent. Statement 2 is correct: moisture and temperature compound one another, each multiplying the effect of the other on storage life.
Statement 3 is false and reverses the relation. Oilseeds are stored at a much lower moisture content than cereals - around 7 per cent for groundnut against 13 to 14 for wheat - because oil holds no water, so the same equilibrium relative humidity is reached at a lower stated moisture.
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