Lactic acid bacteria - Wikipedia
The lactic acid bacteria (LAB) are either rod-shaped , or spherical , and are characterized by an increased tolerance to acidity (low pH range). This aspect helps LAB to outcompete other bacteria in a natural fermentation, as they can withstand the increased acidity from organic acid production (e.g., lactic acid).
Lactic Acid Bacteria - an overview | ScienceDirect Topics
The lactic acid bacteria are a group of Gram-positive bacteria, non-respiring non-spore-forming, cocci or rods, which produce lactic acid as the major end product of the fermentation of carbohydrates.
Lactic Acid Bacterium - an overview | ScienceDirect Topics
Lactic acid bacteria (LAB) are a heterogeneous group of phylogenetically closely related microorganisms that produce lactic acid as the major or sole product of carbohydrate fermentation. LAB are Gram positive, nonsporulating, catalase-negative, acid tolerant, nonrespiring but aerotolerant, usually nonmotile cocci or rods with low Guanidine ...
Lactic Acid Bacterium - an overview | ScienceDirect Topics
Lactic acid bacteria are a class of Gram-positive, non-spore-forming, non-reactive but gas-tolerant microorganisms. They are usually characterized by their ability to produce lactic acid. Lactic acid bacteria, as an indispensable fermentation bacterium, are considered a kind of probiotic.
Lactic-acid bacterium | Fermentation, Probiotics, …
Lactic-acid bacteria are aerotolerant anaerobes that are chiefly responsible for the pickling conditions necessary for the manufacture of pickles, sauerkraut, green olives, some varieties of sausage, and certain milk products, such as buttermilk, yogurt, and some cheeses.
12-1 An introduction to lactic acid bacteria - University of …
Lactic acid bacteria are Gram-positive usually non-motile, non-spore-forming rods and cocci. They lack the ability to synthesize cytochromes and porphyrins (components of respiratory chains) and therefore cannot generate ATP by creation of a proton gradient.
Lactobacillus Species: Taxonomic Complexity and …
Apr 28, 2015 · Lactobacillales is one of the diverse and phylogenetically heterogeneous orders of lactic acid producing bacteria that include the type genus Lactobacillus, as well as the genera Facklamia, Granulicatella, Leuconosto c, Pediococcus, and Streptococcus. They utilize carbohydrates fermentatively and produce lactic acid as a major end-product [1].
Chapter 12 - Lactic Acid Bacteria - University of …
Lactic acid bacteria can be divided into two groups based upon the products produced from the fermentation of glucose. Homofermentative organisms ferment glucose to two moles of lactic acid, generating a net of 2 ATP per mole of glucose metabolized.
Lactic Acid Bacteria: Taxonomy, Characteristic Features, …
These bacteria belong to the phylum—Firmicutes, class—Bacilli, and order—Lactobacillales, and are known to convert sugars into lactic acid, thrive in low pH environments, and withstand challenging conditions.
Taxonomy of Lactic Acid Bacteria | SpringerLink
Lactic acid bacteria are Gram-positive non-sporing cocci, coccobacilli or rods, having a DNA base composition of less than 50 mol% G + C. They generally lack catalase, although pseudo-catalase was detected in cultures grown on a low sugar concentration, and they need...