title: A differential medium for the enumeration of homofermentative and heterofermentative lactic Acid bacteria.
abstract: A medium was developed for the differential enumeration of homofermentative and heterofermentative lactic acid bacteria. Essential components of the medium included fructose (14 mM), KH(2)PO(4) (18 mM), bromcresol green (as a pH indicator), and other nutrients to support growth. In agar medium, homofermentative colonies were blue to green, while heterofermentative colonies remained white. A total of 21 Lactobacillus, Pediococcus, Leuconostoc, and Streptococcus species were correctly classified with the medium.
authors.affiliation: Food Fermentation Laboratory, Agricultural Research Service, U.S. Department of Agriculture, and Department of Food Science, North Carolina Agricultural Research Service, North Carolina State University, Raleigh, North Carolina 27695-7624.
authors.forename: L C
authors.initials: LC
authors.lastname: McDonald
authors.forename: R F
authors.initials: RF
authors.lastname: McFeeters
authors.forename: M A
authors.initials: MA
authors.lastname: Daeschel
authors.forename: H P
authors.initials: HP
authors.lastname: Fleming