Dalea extracts as potential ingredients for phyto-formulations: antioxidant, antityrosinase, antifungal properties and in vitro cytotoxicity evaluations

DEL GAUDIO MICAELA; SANTI MARIA D; CABRERA JOSE L.; PERALTA MARIANA A; ORTEGA, MARÍA GABRIELA

Belo Horizonte

Congreso; CONGRESS ON SCIENCE, BIODIVERSITY AND SUSTAINABILITY; 2019

Universidade Federal de Minas Gerais

The American Dalea L. genus (Fabaceae) has its habitat from the southwestern United States to central Argentina and Chile. According to ethnobotanical and ethnomedical reports, several Dalea species are applied in gastrointestinal and dermatological illness and used for their anti-inflammatory and analgesic properties. Phytochemical studies have disclosed the presence of prenylflavonoids in Dalea genus. Their bioactivities include antioxidant, antityrosinase, antimicrobial properties, between others. Continuing with the research in Dalea genus, here we present the phytochemical and biological activities analysis of three South American Dalea species: D. leporina, D. boliviana, and D. pazensis.The hydroalcoholic extracts from roots of these species were obtained and their antioxidant, antityrosinase, antifungal, and cytotoxicity activities were determined and compared among themselves and with respect to reference compounds. Furthermore, the chemical profile was investigated focused in the presence of 8PP [2?,4?-dihydroxy-5?-(1???,1???-dimethylallyl)-8-prenylpinocembrin] the prenylflavonoid with the most biological studies in this genus. From these studies, the polar extracts of the three Dalea species exerted relevant biological activities and low cytotoxicity in vitro. Moreover, the flavonoid 8PP was present in all of them. These results allow us to propose the potential use of these natural products as phyto-bioactive ingredients in several industries such as food, pharmaceutical, or cosmetic. Further studies in vivo are necessary to guarantee the security of these extracts for human use.