A soil bacterium capable of using oligo- and polyethylene glycols and ether alcohols as sole sources of carbon for aerobic growth was isolated. The effects of substituent groups added to the ether bonds on the acceptability of the compounds as substrates were studied. Mechanisms for the incorporation of two-carbon compounds were demonstrated by the observation that acetate, glyoxylate, ethylene...

The rejection thresholds of Phormia regina Meigen for twenty-four glycols have been determined. A definite relationship between the concentration of the test material and the distribution of thresholds has been noted regularly in samples of flies selected at random from a population of known age which had been reared under standard conditions. The scattering of thresholds is normal with respect...

For detection of low concentrations of analytes in complex biological matrices using optical biosensors, a high surface loading with capture molecules and a low nonspecific binding of nonrelevant matrix molecules are essential. To tailor biosensor surfaces in such a manner, poly(ethylene glycols) (PEG) in varying lengths were immobilised covalently onto glass-type surfaces in different mixing r...

Nanoemulsions (NE) are isotropic, dispersions of oil, water, surfactant(s) and cosurfactant(s). A range components (11 surfactants, nine cosurfactants, five oils) were investigated as potential excipients for preparation ketorolac tromethamine (KT) ocular nanoemulsion. Diol cosurfactants the effect their carbon chain length dielectric constant (DEC), Log P, HLB on saturation solubility KT. Hen’...

Oligoethylene glycols are used as crowding agents in experiments that aim to understand the effects of intracellular environments on DNAs. Moreover, DNAs with covalently attached oligoethylene glycols are used as cargo carriers for drug delivery systems. To investigate how oligoethylene glycols interact with DNAs, we incorporated deoxythymidine modified with oligoethylene glycols of different l...

We were interested to read the article by Manini et al. (1), which confirmed previous observations that a severe ethylene glycol poisoning may lead to falsely elevated lactate levels (2). High lactate levels were indeed measured by enzymatic spectrophotometry (Integra analyzer) but excluded by a specific GC analysis. A linear correlation was nicely demonstrated between the serially determined b...

Glycols, aldehydes, and acrylamide inhibit the in vitro formation of cold cataracts in calf lenses. The inhibition is reversed when the glycols or the acrylamide are diffused out of the lenses. The inhibition by aldehydes or polacrylamide is irreversible, suggesting that the crosslinking reagents may permanently modify lens structure to prevent the development of lens opacities due to a phase t...

A device for automatically maintaining any desired concentration of triethylene or propylene glycol vapor in air is described. It can also be used to measure very rapidly the glycol content of room air. This instrument should greatly facilitate tests of the efficacy of glycol vapors in preventing air-borne infections.

INTRODUCTION .......................................................................................................................................................216 PROBLEM POLLUTANTS AND ETHER SCISSION..........................................................................................217 Agrochemicals........................................................................................