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Effects on Milk of Transportation Through a Pilot-Plant Pipeline

Department of Food Science, Cornell University, Ithaca, New York

ABSTRACT

The purpose of the investigation was to examine the feasibility of transporting milk for long distances through pipelines and to study the factors which could influence the quality of milk in this form of transportation.

A pilot-plant pipeline system was designed and constructed to simulate the actual conditions of pipeline flow. Effects of pumping on milk quality were studied. The experiments revealed that the feasibility of milk transportation through pipelines was dependent upon the initial quality of milk used, milk temperature during pumping, and bacterial contamination encountered during transportation.

It was determined that high-temperature short-time pasteurized, homogenized, vacuum-treated milk could be pumped at temperatures below 10 C under sanitary conditions for a longer period of time (over five days) than other milks studied under the same conditions. Raw milk could not be pumped for long periods without development of rancidity.

¹ Present address: Department of Nutrition and Food Science, Massachusetts Institute of Technology, Cambridge, Massachusetts.