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Electrode potentials in laboratory silage

Published online by Cambridge University Press:  27 March 2009

R. H. Common  and
W. Bolton
R. H. Common
Affiliation:
Ministry of Agriculture for Northern Ireland and the Queen's University of Belfast
W. Bolton
Affiliation:
Ministry of Agriculture for Northern Ireland and the Queen's University of Belfast
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Extract

1. The average electrode potentials of laboratory silages of various types have been measured.

2. The electrode potentials of ordinary and molassed silages tended to assume values of the order of –0·05 to –0·10 V. from about the third day; the pH of these silages lay in the range pH 4·0 to 5·5.

3. In a number of instances secondary increases of electrode potential were observed, frequently in association with secondary deterioration.

4. The electrode potential of silage prepared with hydrochloric acid and of pH 3·4 remained steady around +0·18 V.; the potential of silage prepared with formic acid and of pH 3·9 was about + 0·35 V. initially but declined towards + 0·23 V. at 35 days.

5. Curves for the ‘pure’ carotene content of laboratory silages displayed minima during the early stages of fermentation except in the case of formic acid silage.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 32 , Issue 3 , July 1942 , pp. 338 - 348
Copyright
Copyright © Cambridge University Press 1942

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References

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