Concentrations of macroelements and trace elements in milk of Jersey cows

2016 ◽  
Author(s):  
Natalia Proskura ◽  
Joanna Podlasinska ◽  
Witold Stanislaw Proskura ◽  
Anna Frost-Rutkowska ◽  
Andrzej Dybus ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Raw Milk ◽  
Toxic Heavy Metals ◽  
Milk Samples ◽  
Spearman Coefficient ◽  
Wet Weight ◽  
Positive Correlations ◽  
Jersey Cows ◽  
Pb Concentration

The aim of the study was to determine concentration of macroelements (P, Ca, Mg, Na, K), and some microelements, including toxic heavy metals (Cr, Fe, Mn, Zn, Cu, Co, Pb, Cd and Hg) in milk of Jersey cows. Milk samples were collected from Jersey cows kept in tie-stall barn in Greater Poland Province. The feeding was based on total mixed ration mixture. The maximum permitted level of Pb concentration in raw milk (0.02 mg/kg wet weight)was significantly exceeded (0.063±0.035 mg/dm3). The content of Hg was very low (0.106±0.057 μg/dm3).Significant (P£0.05) Spearman coefficient correlations were observed between contents of some elements in milk. Especially interesting were positive correlations of heavy metals: Cd-Cr, Co-Mn, Cr-Zn, Mn-Zn. Additionally the content of Ca was positively correlated with numerous elements: Hg, Cr, Cu, Mn, Zn, Mg, and negatively correlated with the content of Fe.

scholarly journals Spectrophotometric Quantification of Trace Elements and Toxic Metals in Raw Milk Samples of Peshawar City, Pakistan

2021 ◽  
Vol 12 (1) ◽  
pp. 53-59
Author(s):  
Nadir Khan ◽  
Rizwan Ullah ◽  
Fazal Wahid ◽  
Qamar Sultana ◽  
Muhammad Rahim
Keyword(s):  
Trace Elements ◽  
Freezing Point ◽  
Physicochemical Characterization ◽  
Raw Milk ◽  
Average Concentration ◽  
Toxic Heavy Metals ◽  
Average Percentage ◽  
Milk Samples ◽  
Permissible Limits ◽  
Fe And Mn

The present study focused on the physicochemical characterization and spectrophotometric determination of the concentrations of trace elements (Zn, Cu, Fe and Mn) and toxic heavy metals (Cd and Pb) in raw milk samples collected from various commercial sites of Peshawar city, Pakistan. Evaluation of the nutritional values as well as the possible health concerns associated with the consumption of contaminated milk shown the average percentage composition of protein, fats, solid non-fats, lactose, salts and added water in the milk sample as 2.78, 4.81, 6.41, 3.05, 0.47 and 31.1 %, respectively. The values of pH, conductivity, density and freezing point were observed as 6.59, 3.51 mS/cm, 1.04 g/mL and -0.3674 ºC at 26 ºC. The physicochemical characteristics such as percentage protein, fat, lactose, salts, water, solid not fat, total solids, pH, conductivity and density were evaluated and found in the safe limits of the WHO/FAO. The average concentration of trace elements such as zinc and copper were found to be 1.4035 mg/L and 0.2588 mg/L, respectively. The concentration of Zn and Cu was found within permissible limits suggested by WHO. However, the average concentration of Fe, Mn, Cd and Pb were found higher than the permissible limits of WHO. The observed concentrations were: Fe = 1.5553, Mn = 0.4354, Cd = 0.1865 and Pb = 1.1162 mg/L. The presence of the non-essential and hazardous Cd and Pb in milk samples even in lower concentrations may cause severe health problems since these are the most noxious pollutants due to their non-biodegradable and bio-accumulative nature. Over-dose of Fe and Mn also leads to several health issues. A thorough and more precise investigation of raw milk consumption in Peshawar is highly recommended to ascertain the actual reasons and sources in the larger public interests.

scholarly journals Concentrations of toxic heavy metals and trace elements in raw milk of Simmental and Holstein-Friesian cows from organic farm

2013 ◽  
Vol 185 (10) ◽  
pp. 8383-8392 ◽  
Author(s):  
Renata Pilarczyk ◽  
Jerzy Wójcik ◽  
Paweł Czerniak ◽  
Piotr Sablik ◽  
Bogumiła Pilarczyk ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Raw Milk ◽  
Toxic Heavy Metals ◽  
Organic Farm ◽  
Holstein Friesian ◽  
Friesian Cows ◽  
Metals And Trace Elements

Study of the toxic heavy metals, macroelements, trace elements and microelements content in feathers of kestrel (Falco tinnunculus) in Tenerife

2016 ◽  
Vol 258 ◽  
pp. S215-S216
Author(s):  
M. Rodríguez Álvarez ◽  
A.J. Gutiérrez Fernández ◽  
D. González Weller ◽  
C. Rubio Armendáriz ◽  
J.M. Caballero Mesa ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Falco Tinnunculus ◽  
Toxic Heavy Metals

scholarly journals A Quantitative Analysis of Chromium and Zinc in Water and Raw Milk in Chittagong, Bangladesh

2016 ◽  
Vol 8 (1) ◽  
pp. 93-100
Author(s):  
S. Akther ◽  
S. M. S. Shahriar ◽  
M. K. Alam ◽  
H. M. Zakir
Keyword(s):  
Heavy Metals ◽  
Quantitative Analysis ◽  
Water Samples ◽  
Chromium Content ◽  
Raw Milk ◽  
Milk Samples

The concentration of selected heavy metals (chromium and zinc) was detected and estimated in water and raw milk collected from Chittagong City of Bangladesh. A total of 25 water samples and 20 raw milk samples were collected from different farms situated in 10 locations of Chittagong, Bangladesh. Chromium content in water was obtained in the range from 0.2 µg/L to 13 µg/L. The highest level of chromium content in water was 13.068 µg/L. The content of chromium in raw milk was obtained in the range from 2 µg/L to 17 µg/L. The highest level of chromium in milk was 17.062 µg/L. Chromium concentrations in water and milk were below the maximum allowed limit.  The concentration of zinc in water was in the range from 0.01 mg/L to 1 mg/L. The highest level of zinc in water was 1.024 mg/L. The concentration of zinc in raw milk was in the range from 0.6 mg/L to 0.9 mg/L. The highest concentration of zinc in water was 1.024 mg/L which is around the toxicological guidance value of zinc.

scholarly journals The effect of breed and stage of lactation on the microbiological status of raw milk

2019 ◽  
pp. 37-45
Author(s):  
Flóra Mária Petróczki ◽  
Tema Andualem Tonamo ◽  
Béla Béri ◽  
Ferenc Peles
Keyword(s):  
Microbiological Quality ◽  
Raw Milk ◽  
Coliform Count ◽  
Milk Samples ◽  
Stage Of Lactation ◽  
Holstein Friesian ◽  
Significant Difference ◽  
Jersey Cows ◽  
Friesian Cows

The microbiological quality of the milk is important not only for food safety, but it can also influence the quality of dairy products. The microbiological status of raw cow milk can be influenced by many factors. Our aim was to determine whether there was a difference between the microbiological quality of milk of two different cow breeds (Holstein Friesian and Jersey) kept and milked in the same conditions, and how the microbiological quality of the raw cow milk changed during lactation (beginning, mid, and end). Samples were taken and analysed in July, August and September in 2018 from two dairy farms in Hajdú-Bihar county. During the conducted studies, the total plate count (TPC), the coliform count, the Staphylococcus aureus count and the coagulase-negative Staphylococcus (CNS) count of raw milk samples were determined. There was no significant difference (P>0.05) between the milk of the Holstein Friesian and Jersey breeds in the case of TPC. However, the mean coliform count of milk samples taken from Holstein Friesian cows was significantly lower (P<0.05) than the mean coliform count of milk samples taken from Jersey cows. S. aureus was detected in one of the twelve milk samples taken from Holstein Friesian cows, and in two of the eleven milk samples taken from Jersey cows. CNS was found in larger amount in milk samples taken from Holstein Friesian cows, and the difference was significant (P<0.05). Both TPC and CNS count were significantly higher (P<0.05) in individual milk samples taken at the end stage of lactation, than in samples taken in the earlier stages of lactation from Farm “A”. However, in the case of Farm “B”, there was no significant difference (P>0.05) in colony counts at different stages of lactation. S. aureus was only present in milk samples that collected from cows, which were at the beginning and middle stages of lactation. Testimg the hemolysin production ability of S. aureus strains isolated from the raw milk samples, only weak hemolysis was observed on blood agar. In case of antibiotic resistance testing, it was found that all strains were susceptible to cefoxitin, chloramphenicol, clindamycin, erythromycin, gentamicin, penicillin G, tetracycline and trimethoprim/sulphamethoxazole. Based on the results of our studies, staphylococci were detected in a higher amount in the milk of Holstein Friesian cows, and coliform bacteria were detected in a higher number in the milk of Jersey cows. Summing up the results of the milk samples taken from the different stages of lactation in one of the farms, it can be concluded that higher TPC and CNS count could be detected at the end stage of lactation than in the samples taken from the earlier stages of lactation. The fact that at the end of lactation the microorganisms could be detected in a higher colony count may be related to the fact that teats could be damaged during lactation by the milking machine, which increased the chance of imvading the microorganisms into the udder.

scholarly journals Distribution and Safety Assessment of Heavy Metals in Fresh Meat from Zhejiang, China

2021 ◽  
Author(s):  
Jian Long Han ◽  
Xiao Dong Pan ◽  
Qing Chen
Keyword(s):  
Heavy Metals ◽  
Health Risk ◽  
Safety Assessment ◽  
Meat Products ◽  
Fresh Meat ◽  
Southeast China ◽  
Industrial Activities ◽  
Wet Weight ◽  
Positive Correlations ◽  
Meat Samples

Abstract There are increasing concerns on heavy metals in animal derived foods. We analyzed the levels of As, Cd, Cr, Cu, Hg, Ni, and Pb in 1066 fresh meat samples including pork, beef, mutton, chicken and duck from Zhejiang province, southeast China. The average levels of As, Cd, Cr, Cu, Hg, Ni, and Pb were 0.018, 0.002, 0.061, 0.801, 0.0038, 0.055, and 0.029 mg/kg wet weight respectively. There are significant positive correlations among Cd, Hg and Pb (P<0.05) and negative correlations for Cu-Pb or Cu-Cd (P<0.05). The exposure assessment showed that the health risk to humans by consuming these meat products was relatively low. However, regular monitoring of heavy metals in meat products is still recommended considering their intensive industrial activities.

Toxic heavy metals and other trace elements in foodstuffs from 12 different countries

1994 ◽  
Vol 43-45 (1) ◽  
pp. 415-422 ◽  
Author(s):  
E. Cortes Toro ◽  
H. A. Das ◽  
J. J. Fardy ◽  
Z. bin Hamzah ◽  
R. K. Iyer ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Toxic Heavy Metals

scholarly journals Estimation the Presence of Heavy Metals and Trace Elements in Indian Herbal Cosmetics by Atomic Absorption Spectrophotometer

1970 ◽  
Vol 7 (5) ◽  
pp. 59-64
Author(s):  
Krishnasis Chakraborty ◽  
Suraj Chaudhary
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Permissible Limit ◽  
Toxic Heavy Metals ◽  
Herbal Cosmetics ◽  
Cu And Zn ◽  
Metals And Trace Elements

Heavy metals are identically Pb, Cd and micronutrients elements like Ca, Mg, Al, Cu and Zn were quantitatively estimated using Flame Atomic Absorption Spectrometry (FAAS). Similarly, heavy metals such as As and Hg were quantitatively estimated by Hydride Generation Technique i.e. Cold Vapor Atomic Absorption Spectrometry method expending nitrogen as carrier gas in 30 herbal cosmetic preparations available in Indian markets. The results designate that among the toxic heavy metals. In the present study, Arsenic was found significantly well below the permissible limit, but Cd was found above the permissible limit in the all samples. Trace elements like Ca and Mg were found in higher amount than compare to Al, Cu, and Zn. Presence of trace elements can corroborate to be beneficial but existence of toxic heavy metals in such amounts certainly has adverse effects on the consumer health who always take the herbal products in an impression of being safe because of the natural origin. In conclusion, execution of strict and isolated regulatory guidelines and promotion of Good Analytical Practice (GAP), Good Manufacturing Practices (GMP) and Good Agricultural and Control Practices (GACP) is suggested for herbal cosmetics by WHO and other regulatory agencies. This study presents the status of heavy metals and trace elements in marketed herbal cosmetic formulations and provides a simple and convenient AAS method which can effectively be adopted at Industrial level for the quality control and standardization of herbal cosmetic preparations and other related products.  

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