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A Ropy Milk Organism Isolated from the Finnish "Piima" or "Fiili"¹

Dairy Bacteriology Laboratory, University of Minnesota, St. Paul, Minnesota

ABSTRACT

A bottle of milk, decidedly ropy in character, was brought to our laboratory by a Finnish student. It has not been possible to obtain a complete history of the beverage, but we were informed that some relative of a grocery man, who dispensed it, had sent to him through the mail from Finland, a culture absorbed in ordinary blotting paper. The beverage is known to these people as ‘Fiili" or "Piima." A search of the literature has failed to reveal any reference to this particular type of ropy milk. Inquiries made among investigators in this country have not yielded any information regarding it. Others have been consulted, among them editors of Finnish papers, but no scientific data was available.

An attempt was made to isolate the organism or group of organisms, responsible for the condition. A fresh twenty-four hour propogation was plated on "milk powder agar A" (Ayers and Mudge, Jour. Bact., v, 6, 565) with excellent results.

¹ Published with the approval of the Director as Paper No. 340, Journal Series, Minnesota Agricultural Experiment Station.