2 research outputs found
Unilamellar lipid bilayers including cholesterol in wool Chlorination: stability of chlorine liposomes and application on wool
We studied the application of unilamellar liposomes of a defined size (200 nm)
containing cholesterol as vehicles for oxidative reagents in wool chlorination. To this
end, we first studied the interaction between liposomes and chlorine in order to determine
the physicochemical stability of these systems in the presence of this oxidative
agent. We assessed physical stability by measuring both the mean vesicle size distribution
of the vesicle suspensions and the changes in the ahsorbance of these systems,
which are directly related to the aggregation or solubilization of liposomes. Our stndy
of chemical stability was based on the lipid peroxidation index of liposomes at different
chlorine concentrations at pH value 6.5. As regards the oxidative effects caused by
the chlorine treatments of wool applied directly or by means of liposomes at pH 1.5,
we investigated the extent of cysteic acid formation groups in wool fibers. Increasing
amounts of cholestcrol in the lipid bilayers of liposomes enhaiice both the physicochemical
stability of ihese systems and the inhibitor). ability of cvsteic acid formation
when samples have been treated with chlorine-liposome systems