To investigate the modification of salivary pellicle with different polyphenol-rich teas and natural extracts for protection against dental erosion. We performed two experiments: one (Green tea, Black Peppermint Rosehip negative control [NC]) other (Grape seed, Grapefruit Cranberry, Propolis, NC), where NC was deionized water. A total 150 enamel specimens were used (n = 15/group). Both experime...

the effect of ethanolic extract of iranian green propolis, rosemary and earthworm meal to determine on performance, immune system and blood metabolites of japanese quail, using 160 mixed-sex quail chicks in a completely randomized design by four treatments (including ethanolic extract of propolis 0.1 percent, rosemary leaves meal 0.5 percent, earthworm meal 0.5 percent and control) and four rep...

In the current study, ultrasonic assisted ethanolic extract of propolis was discussed in detail, including their total phenolic content, antioxidant capacity and radical scavenging capacity. For this purpose, we determined by CUPRAC FRAP) assay. At same time, free extracts investigated via DPPH• CUPRAC- hydroxyl (HRS) methods. The chemical constituents were characterized ATR-FTIR. results revea...

During this study, the in vitro antifungal and antibacterial activities of different extracts (aqueous and organic) obtained from a French propolis batch were evaluated. Antifungal activity was evaluated by broth microdilution on three pathogenic strains: Candida albicans, C. glabrata, and Aspergillus fumigatus. Antibacterial activity was assayed using agar dilution method on 36 Gram-negative a...

BACKGROUND Bee products (including propolis, royal jelly, and bee pollen) are popular, traditional health foods. We compared antioxidant effects among water and ethanol extracts of Brazilian green propolis (WEP or EEP), its main constituents, water-soluble royal jelly (RJ), and an ethanol extract of bee pollen. METHODS The hydrogen peroxide (H2O2)-, superoxide anion (O2.-)-, and hydroxyl radi...

The chemical composition of propolis from the western countries of the Mediterranean basin and Portugal as well as their biological attributes were reviewed. In the vast majority of these countries, extracts of propolis were predominantly constituted by phenols, with the exception of those from Malta and Sicily in which diterpenes in relative high amounts were identified. In one sample from Alg...

Diverse animals have evolved an ability to collect antimicrobial compounds from the environment as a means of reducing infection risk. Honey bees battle an extensive assemblage of pathogens with both individual and "social" defenses. We determined if the collection of resins, complex plant secretions with diverse antimicrobial properties, acts as a colony-level immune defense by honey bees. Exp...

Abstract In this work were determining the total phenolic content, flavonoids and antioxidant capacity in formulations of red fruit juice supplemented with different concentrations aqueous extract Brazilian green propolis. And, also was investigate formulation sensory acceptance by volunteers’ consumers. The addition propolis to increased content compounds flavonoids, enhanced activity final pr...

Propolis has abundant polyphenolic constituents and is used widely as a health/functional food. Here, we investigated the effects of polyphenol-rich propolis extracts (PPE) on intestinal barrier function in human intestinal epithelial Caco-2 cells, as well as in rats. In Caco-2 cells, PPE increased transepithelial electrical resistance and decreased lucifer yellow flux. PPE-treated cells showed...

The studies on chemical composition and biological activity of propolis had focused mainly on species Apis mellifera L. (Hymenoptera: Apidae). There are few studies about the uncommon propolis collected by stingless bees of the Meliponini tribe known as geopropolis. The geopropolis from Scaptotrigona postica was collected in the region of Barra do Corda, Maranhão state, Brazil. The chemical ana...