scholarly journals Monitoring of Carcinogenic Environmental Pollutants in raw Cows’ Milk

2019 ◽  
Vol 12 (1) ◽  
pp. 435-442
Author(s):  
Ahmed Medhat Hegazy ◽  
Marwa I. Khalifa ◽  
Soad M. Nasr
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Sugar Cane ◽  
Rest Period ◽  
Raw Milk ◽  
Work Period ◽  
Milk Samples ◽  
Lactating Cows ◽  
Lead And Cadmium ◽  
Polycyclic Aromatic

These investigations were conducted to detect the residues of polycyclic aromatic hydrocarbons, lead, and cadmium in the raw milk samples of lactating cows grazing around the Sugar Cane Factory. One hundred raw milk samples were collected from apparent healthy lactating cows during the rest and work periods of the Sugar Cane Factory. Detection of polycyclic aromatic hydrocarbons residue in milk samples was performed using a gas chromatography. Lead and cadmium levels in the milk samples were determined after digestion. Results revealed that benzo(a)anthracene and indeno(1,2,3-cd)pyrene (carcinogenic), and acenaphthylene and phenanthrene non-carcinogenic were detected only in the raw milk samples during the work period, while fluoranthene and benzo(a)pyrene were detected only during the rest period. However, chrysene and benzo(b) fluoranthene (carcinogenic) were detected in the milk at the rest and work periods of the Sugar Cane Factory. The highest levels of lead and cadmium were detected during the work period compared to the levels of lead and cadmium at rest. In conclusion, benzo(a)anthracene, indeno(1,2,3-cd)pyrene, acenaphthylene, and phenanthrene, lead and cadmium could be detected in cows’ milk which raised around the Sugar Cane Factory. Further investigations of these pollutants must be done in water, plants, air, and soil around this factory.

scholarly journals Degradation of Hydrocarbons and Heavy Metal Reduction by Marine Bacteria in Highly Contaminated Sediments

2020 ◽  
Vol 8 (9) ◽  
pp. 1402
Author(s):  
Filippo Dell’Anno ◽  
Christophe Brunet ◽  
Leonardo Joaquim van Zyl ◽  
Marla Trindade ◽  
Peter N. Golyshin ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Removal Rate ◽  
Microbial Consortia ◽  
Bacterial Strains ◽  
Gulf Of Naples ◽  
Lead And Cadmium ◽  
Polluted Sediments ◽  
Polycyclic Aromatic

Investigations on the ability of bacteria to enhance removal of hydrocarbons and reduce heavy metal toxicity in sediments are necessary to design more effective bioremediation strategies. In this study, five bacterial strains, Halomonas sp. SZN1, Alcanivorax sp. SZN2, Pseudoalteromonas sp. SZN3, Epibacterium sp. SZN4, and Virgibacillus sp. SZN7, were isolated from polluted sediments from an abandoned industrial site in the Gulf of Naples, Mediterranean Sea, and tested for their bioremediation efficiency on sediment samples collected from the same site. These bacteria were added as consortia or as individual cultures into polluted sediments to assess biodegradation efficiency of polycyclic aromatic hydrocarbons and heavy metal immobilisation capacity. Our results indicate that these bacteria were able to remove polycyclic aromatic hydrocarbons, with a removal rate up to ca. 80% for dibenzo-anthracene. In addition, these bacteria reduced arsenic, lead, and cadmium mobility by promoting their partitioning into less mobile and bioavailable fractions. Microbial consortia generally showed higher performance toward pollutants as compared with pure isolates, suggesting potential synergistic interactions able to enhance bioremediation capacity. Overall, our findings suggest that highly polluted sediments select for bacteria efficient at reducing the toxicity of hazardous compounds, paving the way for scaled-up bioremediation trials.

Polycyclic aromatic hydrocarbons in sugar cane juice produced with burnt and not-burnt sugar cane

2006 ◽  
Vol 164 ◽  
pp. S269-S270
Author(s):  
Silvia A.V. Tfouni ◽  
Silvia H.P. Vitorino ◽  
Maria Cecília Figueiredo Toledo
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Sugar Cane ◽  
Cane Juice ◽  
Sugar Cane Juice ◽  
Polycyclic Aromatic

Polycyclic aromatic hydrocarbons in placenta, maternal blood, umbilical cord blood and milk of Indian women

1995 ◽  
Vol 14 (6) ◽  
pp. 503-506 ◽  
Author(s):  
ND Madhavan ◽  
KA Naidu
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Breast Milk ◽  
Cord Blood ◽  
Umbilical Cord ◽  
Umbilical Cord Blood ◽  
Aromatic Hydrocarbons ◽  
Maternal Blood ◽  
Milk Samples ◽  
Polycyclic Aromatic ◽  
High Concentrations

Human placenta, umbilical cord blood, maternal blood and breast milk samples from mothers were analysed for the presence of selected polycyclic aromatic hydrocarbons (PAHs). Benzo(a) pyrene (B(a)P), dibenzo(a,c)anthracene (DBA) and chrysene (Chy) were detected in all the four types of sample. Levels of dibenzo(a,c)anthracene were higher in the above samples compared with the other two PAHs. Umbilical cord blood and breast milk samples showed relatively high concentrations of all the three PAHs and thus demonstrated that the developing foetus/new born were exposed to these carcinogenic envi ronmental contaminants. The possible implications of PAHs in relation to human health are discussed.

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