Lactic acid bacteria are a group of gram-positive, non-spore forming, cocci or rods, which produce lactic acid as the major end product during the fermentation of carbohydrates. They consisted of many genus including Aerococcus, Carnobacterium, Enterococcus, Lactobacillus, Lactococcus, Leuconostoc, Pediococcus, Streptococcus, Tetragenococcus, Vagococcus, and Weissella. Lactic acid bacteria have...

The question as to whether or not the liver is able to form glycogen from lactic acid is of importance for the relation between the carbohydrate metabolism of the muscles and that of the liver. It is known that the process glycogen * lactic acid occurs in the muscles, while the process glycogen e glucose occurs in the liver. Glucose derived from liver glycogen is convertible into muscle glycoge...

The question as to whether or not the liver is able to form glycogen from lactic acid is of importance for the relation between the carbohydrate metabolism of the muscles and that of the liver. It is known that the process glycogen * lactic acid occurs in the muscles, while the process glycogen e glucose occurs in the liver. Glucose derived from liver glycogen is convertible into muscle glycoge...

A thermophilic Bacillus sp. strain 2-6 was used in completely open repeated batch fermentation for producing optically pure L-lactic acid. Up to 107 g l(-1) L-lactic acid of optical purity 99.8% was obtained with NaOH as pH regulator. Unexpectedly, accumulated cells did not necessarily lead to increased L-lactic acid production. Kinetic and viable cells analyses revealed that L-lactic acid prod...

Polylactic acid is receiving increasing attention as a renewable alternative for conventional petroleum-based plastics. In the present study, we constructed a metabolically-engineered Candida utilis strain that produces L-lactic acid with the highest efficiency yet reported in yeasts. Initially, the gene encoding pyruvate decarboxylase (CuPDC1) was identified, followed by four CuPDC1 disruption...

Lactic acidosis in patients infected with the human immunodeficiency virus was initially identified as a rare complication of therapy with nucleoside analog reverse transcriptase inhibitors (NRTIs). The only patient group that appears to be at greater risk is pregnant women. More recently, milder elevations in lactate (i.e., lactic acidemia or hyperlactatemia) have been found to be more common ...

A solvent-free process was developed for the direct production of lactic acid from glucose in a mechanocatalytic process in the presence of Ba(OH)2, and a moderate lactic acid yield of 35.6% was obtained. Glucose conversion and lactic acid formation were favorable at higher catalyst/glucose mass ratios. However, at relatively lower catalyst/glucose mass ratios, they were greatly inhibited, and ...

* Corresponding author A Lactococcus lactis subs lactis strain was selected from 20 lactic acid strains isolated from the leaves of sugar cane plants, variety CC 85-92. The effects of substrate concentration and pH control on lactic acid (LA) production, glucose conversion (GC) and yield (Yp/s) were investigated using this strain. In batch fermentation at 32oC, with 60 gl of glucose and a pH of...

The sudden death syndrome (SDS) is a relatively new problem in the feedlot industry. With SDS, apparently healthy cattle in late finishing die suddenly with no sign of sickness or lesions indicative of other diseases. Rumen fluid pH, histamine, total lactate, L(+) lactate and volatile fatty acids (VFA) were compared among 19 SDS cattle, two animals with lactic acidosis produced through grain en...

A young man who presented with fever, altered sensorium and sudden onset tachypnea, is described. Arterial blood gas analysis, revealed the presence of severe high anion gap metabolic acidosis, with compensatory respiratory alkalosis and normal oxygen saturation. A detailed neurological, nephrological, biochemical and hematological evaluation, revealed the presence of Acute myeloid leukemia, wi...