"Characterization of some plant extracts by ultrasound-assisted extraction in sunflower oil using thin layer chromatography and spectrophotometry UV-vis "

The purpose of this work was to prove the enrichment of sunflower oil with active principles (polyphenolic acids, flavones, flavonoids) from plants, using the ultrasounds-assisted extraction (UAE) process.The analytical technique used for qualitative characterization of the UAE samples is thin layer chromatography (TLC), a relatively simple technique, which under certain separation and detection conditions highlights the bioactive components of the plants studied in our study.UV-VIS spectrophotometry was used to evaluate the level of flavonoids.The UAE samples in sunflower oil were also characterized by determining the alpha-tocopherol content through a gas-cromatographic method (GC-MS), and by evaluating the antioxidant activity through an indirect DPPH spectrophotometric method.The oily plants extracts were obtained to be used as raw material in the formulation of a dermato-cosmetic product, and thus the characterisation performed herein is very useful in supporting the effects of the above-mentioned products.