Capillary electrophoresis as analytical method for active ingredient determination in cosmetic matrices.
Capillary electrophoresis (CE) has emerged as an important technique applied to analytical chemistry and quality control. In the cosmetic field ascorbic acid is important for soothing, bleaching and for its scavenger activity. Ascorbic acid is responsible for great number of physiological oxidations in electron transfer reactions. Many natural substances have a functional activity which is very difficult to preserve or even to prolong with the requested and expected treatment. This paper reports the study of capillary electrophoresis for the characterization of ascorbic acid as the active ingredient in a new delivery system that is able to preserve stability and to prolong release of ascorbic acid according to the concentration needs of a cosmetic formulation.
Brandolini
V
V
Dipartimento di Scienze Farmaceutiche, Universit a di Ferrara, Ferrara, Italy.
Menziani
E
E
Zanotti
F
F
Bader
S
S
Guarneri
M
M