We detected free and total concentrations in 100% of samples for four analytes (BPA, butyl paraben, methyl paraben, propyl paraben).

The amount of chlorophyll a, b and total chlorophyll and carotenoids significantly reduced under propyl isothiocyanate stress.

In these same studies we discovered the metabolic route of formation of normal propyl alcohol, the fusel oil component that does not correspond directly to any amino acid.

The scientists found that the concentrations required so that L-ascorbic acid, lactic acid and propyl gallate could have the strongest inhibitory effects against the growth of the microorganisms were 1%, 0.3% and 0.1%, respectively.

In the region of clusters ([X.sub.E] > 0.15) the sonication effects are large for ethyl and propyl acetates, indicating a considerable interaction of esters with the solvent system.

Products: Propionic esters, including: UCAR[TM] ester EEP, UCAR n- butyl propionate, UCAR, n-pentyl propionate, and UCAR n- propyl propionate

While the presence of propyl paraben in the diet is limited and unlikely to represent a risk to consumers, the panel was unable to recommend a specific ADI for propyl paraben based on current evidence.

Propyl gallate (PG) complexes have been successfully used for adsorptive stripping of other metals such as chromium and uranium (7).

The final topping of this unhealthy concoction is lots of preservatives, such as BHA, BHT, Ethoxyquin, propyl gallate, benzoate of soda plus artificial colorings and flavorings.

The antioxidants to be studied are BHA, BHT, propyl gallate and dodecyl gallate, and the initial phase of the project will involve the analysis of foods that have been commercially produced to determine the levels of recovery of antioxidant using different extraction techniques.

There are safer ways to prolong the shelf life of foods (but not with propyl gallate, which is closely related to BHA and BHT and which may also be a problem).

N-propyl bromide is known by alternative names such as normal propyl bromide, bromopropane, NPB amongst others.

A simple and sensitive method for the simultaneous determination of methanol, ethanol, iso propyl alcohol(IPA), methyl ethyl ketone (MEK), methyl isobutyl ketone (MIBK), n-propyl alcohol (n-PA), ethyl acetate (EA), n-butanol, n-propyl acetate (n-PAc), toluene and ortho-xylene by headspace techniques with FID detection is described.

Then propyl iodide (42.5g, 0.25 mol) was added drop by drop and stirred for 4 hours.