Date of Award:
5-1975
Document Type:
Thesis
Degree Name:
Master of Science (MS)
Department:
Biology
Committee Chair(s)
Gary H. Richardson
Committee
Gary H. Richardson
Abstract
Compatibility of mixed cultures of Streptococcus lactis and Streptococcus cremoris were studied by the phage tracer technique in 10% nonfat dry milk and a whey-based phage inhibitory medium. Methods of membrane dialysis and differential enumeration were tried and abandoned. Dominance occurred in nonfat dry milk and in the whey-based medium during a continuous fermentation period within a pH range 6.8 to 5.2. The dominance pattern of two-strain combinations in 10% nonfat dry milk was different from that in the whey-based media. Dominance varied from one strain to another in no consistent sequence in some combinations. Dominance patterns of combinations were compared with patterns of stimulation and inhibition.
Checksum
102f67d48122d73b2ade0d2a326cd9f5
Recommended Citation
Searle, Clinton K., "Comparison of Compatibility of Streptococcus Starters in Reconstituted Nonfat Dry Milk and a Whey-Based Bacteriophage Inhibitory Medium" (1975). All Graduate Theses and Dissertations, Spring 1920 to Summer 2023. 5155.
https://digitalcommons.usu.edu/etd/5155
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