Phenolic compounds and bioactivity of Cytisus villosus Pourr.

• Autor(a) principal: Bouziane, Amel
• Data de Publicação: 2018
• Outros Autores: Bakchiche, Boulanouar, Dias, Maria Inês, Barros, Lillian, Ferreira, Isabel C.F.R., AlSalamat, Husam A., Bardaweel, Sanaa K.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10198/18737
• topic: Antimicrobial; Antioxidant; Antiproliferative activity; Cytisus villosus; Phytochemical

The present study focuses on the chemical composition, antioxidant, antimicrobial, and anti proliferative activities of the ethyl acetate and aqueous extracts obtained from the aerial parts of Cytisus villosus Pourr. HPLC-DAD-ESI/MSn was used to identify the phenolic compounds, being (epi)gallocatechin dimer the major compound (111 ± 5 µg/g·dw) in the aqueous extract, while myricetin-O-rhamnoside(226±9 µg/g·dw) was the main molecule in the ethyl acetate extract. Both extracts exhibited good scavenging activities against DPPH radical(EC50 µg/mLof59±2and31±2 for aqueous and ethyl acetate extracts,respectively). However,the ethyl acetate extract demonstrated more potent quenching activities than the aqueous extract.The antimicrobial activities were assessed on selected Gram-positive (Staphylococcus epidermidis) and Gram-negative (Escherichia coli and Pseudomonas aeruginosa) bacteria, as well as on pathogenic fungus Candida glabrata. The extracts possessed selective and potent antimicrobial activities against the Gram-positive bacterium (IC50 of 186±9 µg/mL and 92±3 µg/mL for aqueous and ethyl acetate extracts, respectively).Finally, C. villosus extracts were evaluated for their antiproliferative potential on three human cancer cell lines representing breast and colon cancers. Although both extracts demonstrated sufficient growth inhibition of the threed ifferent cell lines,the ethyl acetate extract exhibited higher activity(LD50 values of1.57±0.06mg/mL,2.2±0.1mg/mL,and3.2±0.2mg/mLforT47D,MCF-7,andHCT-116cell lines). Both the extracts obtained from the aerial parts of C.villosus revealed very promising results and could be applied as functional agents in the food,pharmaceutical,and cosmeceutical industries.