Boron Isotopic Ratio in Brazilian Red Wines: a Potential Tool for Origin and Quality Studies?

2019 ◽

Vol 76 (2) ◽

pp. 179

Author(s):

Florin Dumitru BORA ◽

Anamaria CĂLUGĂR ◽

Claudiu Ioan BUNEA ◽

Ionut RACZ

Keyword(s):

Atmospheric Pollution ◽

Lead Isotope ◽

Isotopic Ratio ◽

Isotope Ratios ◽

Red Wines ◽

Average Value ◽

Icp Ms ◽

Pb Concentration

The objective of this study is to determine the Pb concentration and 206Pb/204Pb, 206Pb/207Pb, 206Pb/208Pb from several Romanian winemaking regions, in order to highlight credible geographical markers of wine origin. The Pb level concentration and the ratios of 206Pb/204Pb, 206Pb/207Pb, 206Pb/208Pb were determined in 25 white and 9 red wines using ICP-MS techniques. Based on 206Pb/207Pb isotope ratios it can be concluded that the vines grown in the Tîrnave vineyard [Blaj (1.1790 average value)], Huși vineyard [Huși (1.1958 average value wine center), Averești (1.1908 average value)] and Iași vineyard [Copou (1.1875 average value) wine center], show traces of atmospheric pollution with lead [if 206Pb/207Pb=~1.1700-1.2200 (atmospheric pollution)]. Combining the 206Pb/204Pb with 206Pb/208Pb isotopic ratio may carry out a separation on the vineyards and wine-growing centers. Based on 206Pb/204Pb, 206Pb/207Pb and 208Pb/206Pb a separation of the wine samples was possible.

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Isotopic ratio analysis of cattle tail hair: A potential tool in building the database for cow milk geographical traceability

Food Chemistry ◽

10.1016/j.foodchem.2016.08.130 ◽

2017 ◽

Vol 217 ◽

pp. 438-444 ◽

Cited By ~ 7

Author(s):

Shima Behkami ◽

Sharifuddin Md. Zain ◽

Mehrdad Gholami ◽

Sezgin Bakirdere

Keyword(s):

Isotopic Ratio ◽

Cow Milk ◽

Ratio Analysis ◽

Potential Tool ◽

Geographical Traceability ◽

Tail Hair

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Hemolysis of erythrocytes by the hemolytic system from the blood-feeding stable fly, Stomoxys calcitrans

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100123854 ◽

1992 ◽

Vol 50 (1) ◽

pp. 690-691

Author(s):

H. J. Kirch ◽

G. Spates ◽

R. Droleskey ◽

W.J. Kloft ◽

J.R. DeLoach

Keyword(s):

Blood Feeding ◽

Stomoxys Calcitrans ◽

Stable Fly ◽

Digestive Physiology ◽

Transmission Electron ◽

Erythrocyte Lysis ◽

Mammalian Blood ◽

Bovine Erythrocytes ◽

Potential Tool

Blood feeding insects have to rely on the protein content of mammalian blood to insure reproduction. A substantial quantity of protein is provided by hemoglobin present in erythrocytes. Access to hemoglobin is accomplished only via erythrocyte lysis. It has been shown that midgut homogenates from the blood feeding stable fly, Stomoxys calcitrans, contain free fatty acids and it was proposed that these detergent-like compounds play a major role as hemolysins in the digestive physiology of this species. More recently sphingomyelinase activity was detected in midgut preparations of this fly, which would provide a potential tool for the enzymatic cleavage of the erythrocyte's membrane sphingomyelin. The action of specific hemolytic factors should affect the erythrocyte's morphology. The shape of bovine erythrocytes undergoing in vitro hemolysis by crude midgut homogenates from the stable fly was examined by scanning and transmission electron microscopy.

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