Methods To Lumetron tubes containing 2 ml. of carbohydrate solution 5#{188} ml. of anthrone reagent (0.2 gm. of anthrone in 10 ml. of 1120 amId 100 ml. of H2SO4) was rapidly added, while mixing. Tile tubes were heated in a boiling-water bath for 31/2 miii., after whicil they were wiped dry and allowed to cool. The percentage transmittance was measured in 1-cm. cells with a T)K-2 Beckman recordi...

The ink used by Volta in his scripts appears to be a very complex mixture. Our analysis of the eluates from EVA diskettes (via GCXGC/TOFMS) has revealed presence more than 1800 unique metabolites. thus combination different ingredients, mainly consisting tannins, vegetable oils and resins together with root wood dyes. In particular, hydroxy dihydroxyanthraquinones, as well natural quinoids, evi...

In currently used methods for the determination of glycogen, tissue is extracted either by boiling with 30 per cent potassium hydroxide solution (KOH) or by homogenization with trichloroacetic acid solution (TCA). The glycogen is precipitated from the extract by alcohol and determined either by copper reduction after separation by centrifugation, acid hydrolysis, and neutralization (l-3) or by ...

In currently used methods for the determination of glycogen, tissue is extracted either by boiling with 30 per cent potassium hydroxide solution (KOH) or by homogenization with trichloroacetic acid solution (TCA). The glycogen is precipitated from the extract by alcohol and determined either by copper reduction after separation by centrifugation, acid hydrolysis, and neutralization (l-3) or by ...

Inhibition of 5-lipoxygenase by anthralin (1) and 41 derivatives is determined: the acids 38 and 39, the lactones 40-42 and 9-anthrone (8) are the most potent inhibitors, the lactone 41 reaching the efficacy of nordihydroguaiaretic acid (NDGA). The results were correlated with the hydrophilic/lipophilic balance of the test compounds and their clinical efficacy as far as known. There is no corre...