Exudate and Propolis from <i>Escallonia pulverulenta</i>: Phytochemical Characterization and Antibacterial Activity

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dc.contributor.authorJorquera, Bairon
dc.contributor.authorValenzuela-Barra, Gabriela
dc.contributor.authorMayorga, Ailin
dc.contributor.authorMejia, Jessica
dc.contributor.authorNunez, Gabriel
dc.contributor.authorGomez, Miguel
dc.contributor.authorMontenegro, Gloria
dc.contributor.authorQuezada, Waleska E. Vera
dc.contributor.authorEcheverria, Javier
dc.contributor.authorde Camargo, Adriano Costa
dc.contributor.authorvon Poser, Gilsane Lino
dc.contributor.authorBridi, Raquel
dc.date.accessioned2025-01-20T16:11:56Z
dc.date.available2025-01-20T16:11:56Z
dc.date.issued2024
dc.description.abstractPropolis is a complex mixture formed from exudates that bees collect from plants and then mix with beeswax and their own salivary enzymes. Chilean propolis is characterized by the presence of phenolic compounds, which are considered responsible for the biological activities. The endemic species Escallonia pulverulenta (Ruiz and Pav.) Pers. [Escalloniaceae] is a recognized source of exudate to produce propolis. This study reports for the first time the chemical profile and antibacterial activity of E. pulverulenta exudate and leaves, as well as two samples of Chilean propolis. Palynological and morphological analysis showed the presence of E. pulverulenta as one of the main species in the propolis samples. UPLC-MS/MS analyses enabled the identification of phenolic acids in the leaves and in the propolis. Conversely, flavonoids are mainly present in exudates and propolis. Quercetin is the most abundant flavonol in the exudate, with similar concentrations in the propolis samples. Nevertheless, the main compound present in both samples of propolis was the flavanone pinocembrin. The antibacterial results obtained for exudate and propolis have shown a similar behavior, especially in the inhibition of Streptococcus pyogenes. These results show the importance of the exudates collected by the bees in the chemical composition and antibacterial capacity of propolis.
dc.description.funderInES-Genero, Universidad de Chile
dc.fuente.origenWOS
dc.identifier.doi10.3390/plants13141971
dc.identifier.issn2223-7747
dc.identifier.urihttps://doi.org/10.3390/plants13141971
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90302
dc.identifier.wosidWOS:001282317000001
dc.issue.numero14
dc.language.isoen
dc.revistaPlants-basel
dc.rightsacceso restringido
dc.subjectEscallonia pulverulenta
dc.subjectleaves
dc.subjectexudate
dc.subjectpropolis
dc.subjectphenolic acids
dc.subjectflavonoids
dc.subjectantimicrobial activity
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleExudate and Propolis from <i>Escallonia pulverulenta</i>: Phytochemical Characterization and Antibacterial Activity
dc.typeartículo
dc.volumen13
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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