Bacteriology of butter I. Influence of the distribution of the non-fatty constituents on the changes in bacterial content during holding

Hammer, B. W.; Hussong, R. V.

Bacteriology of butter I. Influence of the distribution of the non-fatty constituents on the changes in bacterial content during holding

File

AgriculturalResearchBulletin_v011_b134.pdf (1.44 MB)

Date

2017-05-24

Authors

Hammer, B. W.

Hussong, R. V.

Organizational Units

Organizational Unit

Extension and Experiment Station Publications

It can be very challenging to locate information about individual ISU Extension publications via the library website. Quick Search will list the name of the series, but it will not list individual publications within each series. The Parks Library Reference Collection has a List of Current Series, Serial Publications (Series Publications of Agricultural Experiment Station and Cooperative Extension Service), published as of March 2004. It lists each publication from 1888-2004 (by title and publication number - and in some cases it will show an author name).

Journal Issue

Bacteriology of butter I. Influence of the distribution of the non-fatty constituents on the changes in bacterial content during holding

Department

Extension and Experiment Station Publications

Abstract

1. Unsalted butter held at 21°C. showed a rapid increase in the number of bacteria it contained, whether it was held in the normal physical condition or with the serum largely separated. In general, the multiplication of bacteria was much more rapid when the serum was separated than when it was not.

2. Unsalted butter held at 7°C. also showed an increase in the number of bacteria contained, whether it was held in the normal physical condition or with the serum largely separated, but the increase was much less rapid than at 21°C. The multiplication was, in general, considerably more rapid when the serum was separated than when it was not.

3. Salted butter held at 21°C. tended to decrease in bacterial content, whether it was held in the normal physical condition or with the serum largely separated. In general, it appeared that the separation of the serum increased the rate of destruction of the organisms.

4. Salted butter held at 7°C. also tended to decrease in bacterial content, whether it was held in the normal physical condition or with the serum largely separated. At this temperature there was less of a tendency for the separation of the serum to increase the rate of destruction of the organisms than at 21°C.