New Zealand Dairy Research Institute, Palmerston North, New Zealand.
Appl Environ Microbiol. 1983 Jun;45(6):1932-4. doi: 10.1128/aem.45.6.1932-1934.1983.
The ability to ferment galactose is a major characteristic which can be used to differentiate Lactobacillus helveticus (galactose positive) from Lactobacillus lactis and Lactobacillus bulgaricus (galactose negative). In milk cultures, galactose-positive strains produced d- and l-lactic acid with little galactose accumulation, whereas galactose-negative strains produced d-lactic acid, and galactose accumulated to high levels.
能够发酵半乳糖是鉴别干酪乳杆菌(半乳糖阳性)和乳酸乳球菌、保加利亚乳杆菌(半乳糖阴性)的主要特征。在牛奶培养中,半乳糖阳性菌株产生 d-和 l-乳酸,几乎没有半乳糖积累,而半乳糖阴性菌株产生 d-乳酸,并且半乳糖积累到很高的水平。