The effect of pollen supplements on the determination of the geographical origin of royal jelly

2014 ◽  
Vol 53 (1) ◽  
pp. 124-128 ◽  
Author(s):  
Maria Dimou ◽  
Chrysoula Tananaki ◽  
Georgios Goras ◽  
Dimitrios Kanelis ◽  
Andreas Thrasyvoulou
2015 ◽  
pp. 40-43 ◽  
Author(s):  
Andreas G. Degenhardt

The isotope ratios of water, organic matter and micronutrients from food are dependent on the circumstances and sites of their origin and production. Analytical methods, based on mass spectrometry, are established for routine determination of isotopes. Differentiation between metabolic pathways of C3 and C4 plants is realizable by determination 13C/12C ratios which can distinguish and identify sucrose from pure beet (Beta vulgaris) and pure cane (Saccharum officinarum). Influenced by the worldwide hydrological cycle the isotope ratios of 2H/1H and 18O/16O vary systematically, the variations give information about geographical origin. The exemplarily determination of authenticity is demonstrated by using mass spectrometric isotope ratio evaluation for identification of plant source and geographical origin with the help of selected sugar samples with known origin.


2017 ◽  
pp. 87-91
Author(s):  
Andreas G. Degenhardt ◽  
Elke Jansen ◽  
Timo, J. Koch

Modern instrumental analytical methods for the determination of 13C/12C ratios are established to differentiate between metabolic products of C3 and C4 plants. Differentiation and identification of sucrose from pure beet (Beta vulgaris) and pure cane (Saccharum officinarum) are possible without doubt. Influenced by the worldwide hydrological cycle the determination of the isotope ratios of 2H/1H and 18O/16O as well as their variations provide information about geographical origin. Using samples of selected crystal cane sugar (CCS) with known origin, invert sugar syrups (ISS) as well as burnt sugar syrups (BSS) produced therefrom, the authenticity was determined. The speciality sugars ISS and BSS which were made from CCS could be identified as carbohydrates of C4 plants by using 13C/12C Isotope-Ratio Mass Spectrometry (IRMS). In combination with yeast fermentation of ISS and sugar separation from BSS and fermentation into ethanol as well as knowledge about production water, the C2-H/O isotope ratios of ethanol can theoretically determine the geographical origin of the sugars.


Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3770
Author(s):  
Željka Peršurić ◽  
Sandra Kraljević Pavelić

In recent years, interest has surged among researchers to determine compounds from bee products such as honey, royal jelly, propolis and bee pollen, which are beneficial to human health. Mass spectrometry techniques have shown that bee products contain a number of proven health-promoting compounds but also revealed rather high diversity in the chemical composition of bee products depending on several factors, such as for example botanical sources and geographical origin. In the present paper, we present recent scientific advances in the field of major bioactive compounds from bee products and corresponding regenerative properties. We also discuss extracellular vesicles from bee products as a potential novel bioactive nutraceutical component. Extracellular vesicles are cell-derived membranous structures that show promising potential in various therapeutic areas. It has been extensively reported that the use of vesicles, which are naturally formed in plant and animal cells, as delivery agents have many advantages. Whether the use of extracellular vesicles from bee products represents a new solution for wound healing remains still to be elucidated. However, promising results in specific applications of the bee products in wound healing and tissue regenerative properties of extracellular vesicles provide a good rationale to further explore this idea.


2013 ◽  
Vol 5 (19) ◽  
pp. 5010 ◽  
Author(s):  
Marco Ciulu ◽  
Roberta Farre ◽  
Ignazio Floris ◽  
Valeria M. Nurchi ◽  
Angelo Panzanelli ◽  
...  

Food Control ◽  
2019 ◽  
Vol 99 ◽  
pp. 137-145 ◽  
Author(s):  
A. Giraudo ◽  
S. Grassi ◽  
F. Savorani ◽  
G. Gavoci ◽  
E. Casiraghi ◽  
...  

2018 ◽  
Vol 66 (44) ◽  
pp. 11873-11879 ◽  
Author(s):  
René Bachmann ◽  
Sven Klockmann ◽  
Johanna Haerdter ◽  
Markus Fischer ◽  
Thomas Hackl

2003 ◽  
Vol 23 ◽  
pp. 62-65 ◽  
Author(s):  
Luis Henrique Garcia-Amoedo ◽  
Ligia Bicudo de Almeida-Muradian

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