Lactic acid bacteria - Wikipedia
The lactic acid bacteria (LAB) are either rod-shaped (bacilli), or spherical (cocci), 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).
Metabolism Characteristics of Lactic Acid Bacteria and the …
2021年5月12日 · Lactic acid bacteria (LAB) are a type of gram-positive bacteria that use carbohydrates as the only or main carbon source (George et al., 2018). Lactic acid bacteria are generally cocci or rods, and have strong tolerance to low pH.
Lactic-acid bacterium | Fermentation, Probiotics, Metabolism
Lactic-acid bacterium, any member of several genera of gram-positive, rod- or sphere-shaped bacteria that produce lactic acid as the principal or sole end product of carbohydrate fermentation. Lactic-acid bacteria are aerotolerant anaerobes that are chiefly responsible for the pickling conditions.
Lactic Acid Bacteria - an overview | ScienceDirect Topics
Lactic acid bacteria are a heterogeneous group of Gram-positive bacteria that produce lactic acid as a major end-product of their fermentative metabolism. Lactobacillus , Lactococcus , Streptococcus , Pediococcus , Enterococcus , Leuconostoc , and Carnobacterium are the main genera of lactic acid bacteria.
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. The lactics can only obtain ATP by fermentation, usually of sugars.
Lactic Acid Bacteria and Their Bacteriocins: Classification ...
2017年7月26日 · Lactic acid bacteria (LAB) are a group of Gram-positive, non-spore forming, cocci or rods, catalase-negative, and fastidious organisms, with high tolerance for low pH [1, 2, 3]. LAB are among the most important microbes which are used in food fermentations, as well as in enhancing taste and texture in fermented food products [1, 4].
Lactic acid bacteria as starter cultures: An update in their …
2018年12月11日 · Lactic acid bacteria (LAB) are members of an heterogenous group of bacteria which plays a significant role in a variety of fermentation processes. The general description of the bacteria included in the group is gram-positive, non …
Lactic Acid Bacteria: Taxonomy, Characteristic Features, …
Lactic acid bacteria (LAB) stand out as a group of versatile and fascinating microorganisms. Known for their remarkable contributions to producing fermented foods and beverages, humans have used these bacteria for centuries.
Recent developments of lactic acid bacteria and their metabolites …
2022年6月1日 · Lactic acid bacteria (LAB) are common microorganisms found in various ecosystems including in plants, fermented foods, and the human body. Exploring the biodiversity of lactic acid microflora and characterization of LAB is a new approach to form a variety of starter communities to create innovative nutritional food matrices.
The metabolites of lactic acid bacteria: classification, biosynthesis ...
2023年2月8日 · Lactic acid bacteria (LAB) are ubiquitous microorganisms that can colonize the intestine and participate in the physiological metabolism of the host. LAB can produce a variety of metabolites, including organic acids, bacteriocin, amino acids, exopolysaccharides and vitamins.