547.972The aim of this study was to characterize aqueous and alcoholic extracts [30%, 50% and 70% (w/v)] obtained from medicinal herbs (Calendula officinalis, Hypericum perforatum, Galium verum, and Origanum vulgare) used in traditional medicine from our country. Samples were examined for total and individual content of phenolics and antioxidant activities. The highest content of total polyphenols (9.9 r 0.02 mg gallic acid equivalents (GAE) L -1 extract) and antioxidant activities expressed as Trolox Equivalent Antioxidant Capacity [307.51 TEAC mmol g -1 DW by the ABTS (2,2c-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) method and 20.90 TEAC mmol g -1 DW by the DPPH (1,1-diphenyl-2-picrylhydrazyl) method] was found in Origanum vulgare (50%) extract. Polyphenolic compounds were quantified using RP-HPLC.
In order to obtain the textile materials with potential for use in the treatment of inflammatory skin conditions, this study
approached the laboratory experiments related to depositing by padding of oil-in-water emulsions type based on
chitosan-propolis-cinnamon essential oil. In this regard, seven experimental variants of emulsions were prepared and
then characterized by specific methods from physical-chemical and stability point of view. The chitosan-propolis-
cinnamon essential oil-based emulsions were then immobilized on a knitted textile structure from 100% organic cotton.
The functionalized textile materials were characterized from morphological and antibacterial activity point of view. pH
values obtained for the synthesized polymeric systems were in the range 4.67–4.88 and electrical conductivity of the
emulsions increases with the concentration of the hydrophilic phase in the system, the highest values were registered
for the emulsion code R4CSP developed with the smallest volume fraction of water. The stability index over a period of
10 days indicated that emulsions are stable, not showing the presence of one of the flocculation, creaming /
sedimentation, coalescence or Ostwald ripening phenomena. The highest values of emulsifying activity index were
obtained for the R7CSP, emulsion developed with the smallest volume fraction of water. The highest value of viscosity
was obtained for the experimental variant R4CSP in which the highest volume fraction of chitosan and the smallest
volume fraction of water were used. The textile materials treated with synthesized emulsions based on chitosan-
propolis-cinnamon essential oil have antibacterial effect against the S. aureus test strain, with inhibition zones between
1.5 mm (R2CSP and R7CSP) and 4 mm (R6CSP).
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