Measurements of uptake and mineralization of 14C-labeled glycolic acid by freshwater heterotrophs showed that respiration (mineralization) accounts for 69% of total uptake, and that the heterotrophic potential ( V,,,,, ) for glycolate is comparable with that for other commonly used substrates. Bacteria cultured from lake water showed uptake and mineralization patterns similar to those from the ...

It has also been shown that glycolic acid oxidase, together with the pyridine nucleotide-linked glyoxylic acid reductase, catalyzes the oxidation of reduced pyridine nucleotides by molecular oxygen in model systems (2). In a previous report it was shown that bisulfite addition compounds of aldehydes are effective and highly specific competitive inhibitors of glycolic acid oxidase (8). These com...

Glycolic acid is an attractive raw material which is used as a dyeing and tanning agent in the textile industry, a flavoring agent and preservative in the food processing industry, and a skin care agent in the pharmaceutical industry. It is also utilized for the production of polyglycolic acid and other biocompatible copolymers. Glycolic acid can be isolated from natural sources, such as sugarc...

The studies initiated by Calvin and his colleagues led to the elucidation of a well supported sequence of reactions known as the photosynthetic carbon reduction cycle (1). According to this scheme, which was largely deduced from kinetic experiments, ribulose-1,5-di-P is first carboxylated to give 2 molecules of 3-P-glyceric acid as the first stable carboxylation product (2, 3). The experiments ...

Male Wistar-strain rats which had been fed a glycolic-acid diet developed severe nephrocalcinosis with urinary calculi within 4 weeks. Rats fed the same diet with citrate salts added had, however, either slight or no nephrocalcinosis without any stones in the urinary system. Nephrocalcinosis intermediate between those in the citrate groups and the glycolic-acid group, with some urinary calculi,...

Prior illumination in CO(2)-free air enhances a respiration from maize (Zea mays L.) leaves different in onset and duration from the postillumination burst of photorespiration. The course of respiration after brief illumination of attached leaves was measured as CO(2) efflux in darkness into CO(2)-free atmospheres with four O(2) concentrations. The peak of CO(2) efflux following illumination wa...

The enzyme which oxidizes glycolic acid to glyoxylic acid is present in sufficient concentrations to support active respiration in a wide variety of plants (1). Glycolic acid itself is present in plants in small amounts (2), and, as yet, it has been the only 2-carbon organic acid which has been found to accumulate Cl4 during short time photosynthesis experiments with Cl402 (3). Thus both the fr...

Ammonium glycolate combustion was used to synthesize SrZr0.95Y0.05O3−x powders. Soluble metal-glycolate complexes, detected by infrared spectroscopy, were formed with Y+3 and Zr+4, which maintain atomic level mixing of metal cations with glycolic acid. Sr+2/glycolic acid mixtures did not form glycolate complexes. Temperature-programmed reaction studies showed that only precursor solutions with ...