Palynology as a tool for distinguishing geopropolis samples from stingless bee species in the Maranhense Amazon, Brazil

Ribeiro, Monique Hellen Martins; Luz, Cynthia Fernandes Pinto da; Albuquerque, Patrícia Maia Correia de

doi:10.1080/00218839.2018.1494890

Cited by 7 publications

(1 citation statement)

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“…Pollen analysis of honeybee products (melissopalynological analysis) can be used to determine their botanical source (i.e., to establish quantitatively or qualitatively their uni-or multifloral origin), which is important for assessing their quality (Barth, 1998;Martins-Ribeiro, da Luz, & de Albuquerque, 2018). Montenegro et al (2001) reported that, in Chilean propolis, the major plant pollen sources are Eucalyptus globulus and Populus alba as well as some additional native species (Baccharis linearis, Peumus boldus, Escallonia illinita, and Quillaja saponaria).…”

Section: Introductionmentioning

confidence: 99%

Effect of physicochemical properties and phenolic compounds of bifloral propolis on antioxidant and antimicrobial capacity

Sánchez

Martínez-Benavidez²,

Hernández³

et al. 2020

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In this study the effect of pollen source (mesquite and catclaw) on the sensory characteristics (appearance, color, aroma, taste, consistency and visible impurities), and physicochemical properties of raw propolis, and the phenolic content and biological activities of propolis extracts (PEs) was determined. The phenolic composition of PEs was determined by the total phenolic (TPC), flavone and flavonol (FFC), and flavanone and dihydroflavonol content (FDC). The individual phenolic components were analyzed by HPLC-DAD. The antioxidant activity was determined by the ferric-reducing power (FRAP) and free-radical scavenging activity (FRS). The antibacterial activity was evaluated against Gram-positive (Staphylococcus aureus and Listeria innocua) and Gram-negative (Echerichia coli and Salmonella thyphimurium) bacteria. The results showed that sensory characteristic and physicochemical properties of mesquite and catclaw propolis complied with international quality regulations. Fifteen phenolic compounds were identified, of which pinocembrin, naringenin, galangin, chrysin and quercetin were found a high concentration (> 3 mg/g). Mesquite propolis had the highest phenolic content (TFC and FDC), as well as antioxidant activity (> 2.5 mg Fe (II) equivalent/g; > 40% of DPPH radical inhibition) and antibacterial activity against Gram-positive bacterias in the order S. aureus > L. innocua (> 50% of inhibition for both bacterias at 500 µg/mL). These results indicating that pollen source affect the sensory characteristics and physicochemical properties of propolis, as well as the biological activity of their extracts.

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Section: Introductionmentioning

confidence: 99%