![]() However, this does not necessarily exclude these bacteria from catabolizing other sugars. Non-lactose fermenting bacteria are unable to catabolize glucose and thus are unable to ferment. They are taxonomically classified under the phylum Pseudomonadota. ![]() These bacteria are also known as non-fermenters. Non-lactose fermenting bacteria are unable to convert glucose into cellular energy and lactic acid. What are Non-lactose Fermenting Bacteria? Bacterial strains in these genera can only be separated through biochemical testing, biological tests, whole genome sequencing, and common tests such as H 2S production, motility, use of citrate, indole, methyl red, and Voges-Proskauer tests. All these genera belong to the family Enterobacteriaceae. Examples of bacteria that use the bifidum pathway are Bifidobacterium bifidum.īacterial strains in Escherichia, Citrobacter, Enterobacter, and Klebsiella are able to produce lactic acid for glucose. Moreover, bifidum pathway produces more ATP (5 ATP) than either homolactic or heterolactic fermentation pathways. Examples of these bacteria include Leuconostoc mesenteroides, Lactobacillus bifermentous, and Leuconostoc lactis. Bacteria that follow the heterofermentative pathway produce less lactate and less ATP (one ATP) but produce other end products such as ethanol and CO 2. Examples of homofermentative bacteria include Streptococcus, Lactococcus, Enterococcus, Pediococcus, and Lactobacillus. The bacteria that use the homofermentative pathway convert glucose into two molecules of lactate and use this reaction to carry out substrate-level phosphorylation in order to make two molecules of ATP. In these bacteria, the conversion process can take place by using three different pathways: homofermentative pathway, heterofermentative pathway, and bifidum pathway. Lactose fermenting bacteria are the bacteria that have the ability to convert glucose into cellular energy and lactic acid. Summary – Lactose Fermenting vs Non-lactose Fermenting Bacteria What are Lactose Fermenting Bacteria? Lactose Fermenting vs Non-lactose Fermenting Bacteria in Tabular FormĦ. Similarities – Lactose Fermenting vs Non-lactose Fermenting Bacteriaĥ. What is Non-lactose Fermenting BacteriaĤ. ![]() Lactose fermenting bacteria are able to carry out lactose fermentation reactions, while lactose non-fermenting bacteria are unable to carry out lactose fermentation reactions. ![]() Lactic acid fermentation takes place in some bacteria and animal cells (muscle cells). This is an anaerobic fermentation reaction. Lactic acid fermentation is a metabolic process that converts glucose or other six-carbon sugars into cellular energy and lactic acid (metabolite lactate). The key difference between lactose fermenting and non-lactose fermenting bacteria is that lactose fermenting bacteria are able to convert glucose into cellular energy and lactic acid, while non-lactose fermenting bacteria are unable to convert glucose into cellular energy and lactic acid. ![]()
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