Basil extracts obtained by green chemistry methods for cosmetic applications

In the present study, micellar extracts of Ocimum basilicum L. assisted by microwaves (MAE), as well as ultrasounds (UAE), were obtained using aqueous solutions of alkyl polyglucosides (APGs) with different carbon chain lengths, i.e., capryl glucoside, lauryl glucoside, and cocoyl glucoside. Extracts properties, such as antioxidant activity, total phenolic and flavonoid contents, were measured using spectrophotometric and chromatographic methods. Generally, the determined concentration of antioxidants was higher for extracts obtained in the microwave field. The total content of polyphenols and flavonoids was the greatest when coconut glucoside was used. However, the extracts obtained with caprylic/caprylic glucoside provided optimal antioxidant properties. Hair shampoo with micellar basil extract had strong foaming properties and superior antioxidant activity compared to the base shampoo. APGs are non-ionic, biodegradable surfactants that are safe and mild to the skin so that these extracts can find a wide range of cosmetic applications.