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Steam distillation of taints from cream: V. Vapour/liquid equilibrium relationships for some α-diketones in lactose solution

Published online by Cambridge University Press:  01 June 2009

F. H. McDowall
F. H. McDowall
Affiliation:
The Dairy Research Institute (N.S.), Palmerston North, New Zealand
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Extract

1. The effect of 4·5% lactose in solution on the vapour/liquid equilibrium relationship for acetylpropionyl, acetyl-iso-butyryl, acetylvaleryl, acetylcaproyl and acetylbenzoyl has been investigated.

2. There was no appreciable effect on the relationship for acetylpropionyl and acetylbenzoyl.

3. For acetyl-iso-butyryl there was a lowering of the coefficient at low concentration of diketone in the liquid, but at concentrations above 4 p.p.m. there was no appreciable effect.

4. For acetylvaleryl at low concentrations in the liquid the coefficient was lowered, and at concentrations above 3·0 p.p.m. in the liquid it was increased.

5. For acetylcaproyl the coefficient was lowered by presence of 4·5% lactose in the solution.

6. Change in concentration of lactose over the range 0·5—10% had little effect on the vapour/liquid equilibrium coefficient for acetylpropionyl and acetylbenzoyl, but it caused a progressively increased reduction in the coefficient for acetyl-iso-butyryl, acetylvaleryl and acetylcaproyl.

Type
Original Articles
Information
Journal of Dairy Research , Volume 26 , Issue 1 , February 1959 , pp. 33 - 38
Copyright
Copyright © Proprietors of Journal of Dairy Research 1959

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References

REFERENCES

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