Phenols from defatted walnuts were extracted with absolute methanol. The phenols were divided into four groups on the basis of molecular size. The antagonism of each group towards Escherichia coli, Staphylococcus aureus, and Aspergillus flavus was determined. Small polymers were the best antagonists of E_„ coli and Staph. aureus followed...
Equal molar amounts of (+)-catechin and N-Hydroxymethylacetamide
were reacted under acidic conditions. Thin-layer
chromatography (TLC) was used to monitor the reaction.
The reaction products were isolated by column chromatography
using Sephadex LH-20 and elution with 95 percent ethanol.
Three reaction products isolated included one
disubstituted and two monosubstituted compounds. The...