1 research outputs found
Effect of seasonality on chemical composition and antibacterial and anticandida activities of Argentine propolis: Design of a topical formulation
The effect of seasonality on Argentine propolis collected during one year on its phenolic and flavonoid content and on the growth of Gram-positive and Gram negative antibiotic resistant bacteria and Candida species was evaluated. Extracts of propolis samples collected in the summer and spring showed higher phenolic and flavonoid contents than the samples collected in other seasons (5.86 to 6.06 mg GAE/mL and 3.77 to 4.23 mg QE/mL, respectively). The propolis collected in summer and autumn showed higher antibacterial activity (30 ÎĽg/mL) than the other samples (MIC values between 30 and 120 ÎĽg/mL). No antibacterial activity was detected against Gram-negative bacteria. Also, these extracts were able to inhibit the development of five Candida species, with MFC values of 15-120 ÎĽg/mL. Pharmaceutical formulations containing the more active propolis extract were prepared. The hydrogel of acrylic acid polymer containing summer propolis extract as an antimicrobial agent showed microbiological, physical and functional stability during storage for 180 days. The pharmaceutical preparation, as well as the propolis extracts, was active against Candida sp. and antibiotic-multi-resistant Gram-positive bacteria. These results reveal that propolis samples collected by scraping in four seasons, especially in summer in Calingasta, San Juan, Argentina, can be used to obtain tinctures and hydrogels with antibacterial and antimycotic potential for topical use.Fil: Isla, Maria Ines. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; ArgentinaFil: Dantur, Yanina. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia; ArgentinaFil: Salas, Ana Lilia. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; ArgentinaFil: Danert, Fátima Carolina. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; Argentina. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Tucuman-Santiago del Estero. EstaciĂłn Experimental Agropecuaria Famaillá; ArgentinaFil: Zampini, Iris Catiana. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; ArgentinaFil: Arias, Myriam Elizabeth. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia; ArgentinaFil: Ordóñez, Roxana Mabel. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; ArgentinaFil: Maldonado, Luis. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Tucuman-Santiago del Estero. EstaciĂłn Experimental Agropecuaria Famaillá; ArgentinaFil: Bedascarrabure, Enrique. Instituto Nacional de TecnologĂa Agropecuaria. Centro Regional Tucuman-Santiago del Estero. EstaciĂłn Experimental Agropecuaria Famaillá; ArgentinaFil: Nieva Moreno, MarĂa InĂ©s. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Tucumán. Instituto de QuĂmica del Noroeste. Universidad Nacional de Tucumán. Facultad de BioquĂmica, QuĂmica y Farmacia. Instituto de QuĂmica del Noroeste; Argentin