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Journal of Dairy Science Vol. 61 No. 12 1696-1699
© 1978 by American Dairy Science Association ®
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Chlorinated Quaternized Hexamine and Potassium as Preservatives for Milk Samples1

J. R. Durham, R. M. Bechtle and Michael Oberlander

Department of Animal Sciences and Industry, Kansas State University, Manhattan 66506
West Agro-Chemical, Inc., P. O. Box 1386 Shawnee Mission, KS 66202

ABSTRACT

A new product, a chlorinated quaternized hexamine [1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride], was evaluated as a replacement for potassium dichromate in preserving Dairy Herd Improvement milk samples. In a field study involving 383 Dairy Herd Improvement samples from 24 herds, samples preserved with dichromate tested .086% lower than those preserved with the new product. In another trial, duplicate samples preserved with the dichromate tested .102% lower than the samples preserved with the new product after 2 days; after 5 days the dichromate preservative depressed tests an additional .103%. In a laboratory study, refrigerated samples and those preserved with dichromate or the new product tested nearly the same on day 0, but dichromate preserved milk tested .099% lower at 5 days. The standard plate counts of milk preserved with either preservative were low during a 10-day laboratory test. One tablet of the new product in 28 or 56 ml of milk effectively preserved the milk for 3 wk, but the 56-ml samples had soured by 4 wk. Although it did not preserve 84- or 112-ml samples for even 1 wk, the new product was an adequate preservative for Dairy Herd Improvement milk samples.

FOOTNOTES

1 Contribution No. 78203-J, Department of Animal Sciences and Industry, Kansas Agricultural Experiment Station, Manhattan.






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Copyright © 1978 by the American Dairy Science Association ®.