The content of essential and toxic elements in Croatian propolis samples and their tinctures

Cvek, Josipa; Medić-Šarič, Marica; Vitali, Dubravka; Vedrina‐Dragojević, Irena; Šmit, Zdenko; Tomić, Siniša

doi:10.1080/00218839.2008.11101421

Cited by 34 publications

(51 citation statements)

References 11 publications

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“…The samples were mineralized with heating in acidic medium until mineralization. Also, mineral composition was determined in Croatian propolis samples by AAS . Neutron Activation Analysis (NAA) in order to characterize raw propolis from Argentina, prior mineralization of the sample was performed .…”

Section: Introductionmentioning

confidence: 99%

A porphyrin‐based fluorescence method for zinc determination in commercial propolis extracts without sample pretreatment

et al. 2017

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The quantification of zinc in over-the-counter drugs as commercial propolis extracts by molecular fluorescence technique using meso-tetrakis(4-carboxyphenyl)porphyrin (H TCPP ) was developed for the first time. The calibration curve is linear from 6.60 to 100 nmol L of Zn . The detection and quantification limits were 6.22 nmol L and 19.0 nmol L , respectively. The reproducibility and repeatability calculated as the percentage variation of slopes of seven calibration curves were 6.75% and 4.61%, respectively. Commercial propolis extract samples from four Brazilian states were analyzed and the results (0.329-0.797 mg/100 mL) obtained with this method are in good agreement with that obtained with the Atomic Absorption Spectroscopy (AAS) technique. The method is simple, fast, of low cost and allows the analysis of the samples without pretreatment. Moreover the major advantage is that Zn-porphyrin complex presents fluorescent characteristic promoting the selectivity and sensitivity of the method.

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Section: Introductionmentioning

confidence: 99%

A porphyrin‐based fluorescence method for zinc determination in commercial propolis extracts without sample pretreatment

et al. 2017

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“…The highest element content was potassium followed by calcium, sodium and barium recording 5271.0, 11007.5; 2433.8, 1817.0; 1013.3, 673.3 and 162.7, 169.9 ppm for local and imported propolis, respectively. Ca, K, Mg, Na, Al, B, Ba, Cr, Fe, Mn, Ni, Sr and Zn were discovered by atomic emission/absorption spectrometry in propolis samples collected from different regions (Cvek et al, 2008). Table 4 illustrate the sensory properties of fresh fish kofta containing different concentrations of local propolis (0.5, 1.0, and 1.5%) as well as control sample.…”

Section: Discussionmentioning

confidence: 99%

“…Propolis extracts are commonly prepared by continuous soaking in different solvents, like water, methanol, ethanol, chloroform, dichloromethane, ether, hexane and acetone, also the ultrasonic and microwave methods was used for that purpose (Cvek et al, 2008;Ahangari et al, 2018). Propolis collected from both temperate zone or tropical zones are slightly different in chemical composition (Anjum et al, 2018;Sforcin et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical Properties of Propolis and Its Application as a Food Preservative in Fish Kofta

Tolibaa¹,

Osmanb²,

El-Sayedc³

2019

Pak J. Biotech

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In the current study, the local Egyptian and imported propolis were characterized. The effect of addition of local propolis at different levels (0.5, 1.0, and 1.5%) on the fish (Oreochromis niloticus) kofta shelf life and its quality during storage at 4±2°C for twenty days was estimated. The dominant components found in all propolis samples were guaia-1(10)-en-11-ol (Bulnesol) ranging between 7.32 to 19.5%, guaiol 8.67 to 12.7%, pinostrobin chalcone, 6.66 to 12.2%, α-curcumene 7.31 to 12.0% and β-curcumene 4.07 to 8.73%. The highest element content was potassium followed by calcium, sodium and barium for local and imported propolis, respectively. The addition of local propolis to fish kofta had no negative effect regarding the sensory properties at the beginning of storage. It was clearly noticed that the addition of propolis to fish kofta decreased the malondialdehyde production, total counts of bacterial development, and increased the DPPH inhibition in the cold stored fish kofta. And also, the lowest color changes were observed in 1.5% sample followed by 1.0%, 0.5% and finally control. It could be noted that the addition of local propolis to fish kofta prolonged its shelf life.

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“…This study also reported that the same propolis contained Cu (26.5 mg/kg), Mn (40 mg/kg) and the ash residue contained Fe, Ca, Al, V, Sr and Si (Moreira, 1986). Trace elements (Al, B, Ba, Cr, Fe, Mn, Ni, Sr and Zn) and toxic elements (As, Cd, Hg and Pb) were discovered through atomic emission/absorption spectrometry in propolis samples collected from different Croatian regions (Cvek et al, 2008). Some minerals such as Br, Co, Cr, Fe, Rb, Sb, Sm and Zn were identified in different Argentinean propolis through neutron activation analysis (Cantarelli et al, 2011).…”

Section: Pacificmentioning

confidence: 99%

Recent Advances in Role of Propolis as Natural Additive in Poultry Nutrition

Khan¹

2017

Journal of Apicultural Science

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A b s t r a c t Propolis is a natural resinous mixture produced by honey bees from substances collected from parts of plants, buds and exudates. Due to its waxy nature and mechanical properties, bees use propolis in the construction and repair of their hives for sealing openings and cracks and smoothing out the internal walls and as a protective barrier against external invaders and weathering threats. Bees gather propolis from different plants, in the temperate climate zone mainly from poplar. About 300 compounds such as polyphenols, phenolic aldehydes, sequiterpene quinines, coumarins, amino acids, steroids and inorganic compounds have been identified in propolis samples. Several scientific studies have been focused on the biological activities of propolis and its functions as a health supplement in humans. It could have akin function in poultry. This review is focused on the current findings relating to chemical composition, as an antioxidant, on performance, immunity, intestinal flora and haematological parameter in domesticated poultry species (broiler chickens, laying hens, quail and duck).

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The content of essential and toxic elements in Croatian propolis samples and their tinctures

Cited by 34 publications

References 11 publications

A porphyrin‐based fluorescence method for zinc determination in commercial propolis extracts without sample pretreatment

A porphyrin‐based fluorescence method for zinc determination in commercial propolis extracts without sample pretreatment

Physico-Chemical Properties of Propolis and Its Application as a Food Preservative in Fish Kofta

Recent Advances in Role of Propolis as Natural Additive in Poultry Nutrition

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