Heavy metal levels in milk and fermented milk products produced in the Almaty region, Kazakhstan

Sarsembayeva, Nurzhan; Abdigaliyeva, Tolkyn; Utepova, Z A; Biltebay, Asyl; Zhumagulova, S.Zh.

doi:10.14202/vetworld.2020.609-613

Cited by 22 publications

(16 citation statements)

References 16 publications

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“…These findings are similar to previous studies of [40,41,42,43,34] who also reported mean concentrations of metals in cow milk higher than the acceptable ranges. However, [44,45,46,47] reported values not exceeding the permissible levels in their studies.…”

Section: Discussionmentioning

confidence: 83%

“…In recent times, the amount of metals in cow milk and its products have been widely studied, particularly in industrialized and polluted areas of the developed and the developing countries of the world like Nigeria since animals grazed freely on open fields are considered as bio-indicators of environmental pollution [14,2,15]. Metal level in uncontaminated milk is generally low, but by inhalation of polluted air, intake of contaminated feeds and absorption through the skin, many dangerous elements or compound such as metals and metalloid, accumulate along the food chain [16].…”

Section: Introductionmentioning

confidence: 99%

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Heavy Metals Contamination and Physicochemical Properties of Nono Sold in Wushishi Local Government Area of Niger State, Nigeria

Y¹,

U.²

2022

IJRIAS

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Dairy products such as Nono can be contaminated by heavy metals through exposure of lactating cows to pollution or consumption of feed and water with toxicants. Nono may also be exposed to toxicants during the processes of production and marketing. Nono samples were bought from hawkers around three locations, Zungeru, Wushishi and Gwarjiko, in Wushishi Local Government Area of Niger State, Nigeria. The Nono samples were wet digested and the concentrations of Lead (Pb), Magnesium (Mg), Manganese (Mn), Iron (Fe) and Zinc (Zn) were determined by the Flame Atomic Absorption Spectrophotometeric technique. Percentage lactic acid, pH, total soluble sugar, % moisture content and % total solid were also determined using standard methods. The mean concentrations of Pb, Mg, Mn, Fe, and Zn were found to range from 0.756 -0.769 mg/L, 0.379 -0.390 mg/L, 0.351 -0.354 mg/L, 1.075 -1.080 mg/L and 0.234 -0.389 mg/L respectively. The pH, titratable acidity (expressed as % lactic acid), total soluble sugar, % moisture content and % total solids were 3.85 -4.06, 0.04 -0.16%, 5.67 -5.73, 8.08 -8.30% and 91.70 -91.92% respectively. There was no statistical difference between the means when compared at p≤0.05, but the concentrations of lead, manganese and iron were found to be above the permissible levels while the pH was slightly lower than the acceptable limit. Continuous monitoring of cattle water and feed, and use of appropriate containers in transit of raw milk and (finished) Nono are necessary so as to safeguard milk products from pollution.

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Section: Discussionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Heavy Metals Contamination and Physicochemical Properties of Nono Sold in Wushishi Local Government Area of Niger State, Nigeria

Y¹,

U.²

2022

IJRIAS

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“…In another study from Pakistan, researchers have identified Cu, Pb and Cd in milk samples 31 . Several other studies have performed for detection of heavy metals in milk and milk products in Cyprus 32 , Egyspt 33 , Poland 34 and Kazakhstan 35 . The findings from our study also showed almost similar values in yogurt samples in term of heavy metal contamination.…”

Section: Carcinogenic Health Riskmentioning

confidence: 99%

Potential Human Health Risks Assessment through Determination of Heavy Metal Contents in Regularly Consumed Yogurts in Bangladesh

Hasan

Satter

Das

2021

Biosci., Biotech. Res. Asia

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This study estimated the concentrations of heavy metals in regularly consumed sour, sweet and homemade traditional yogurts in Bangladesh. A total of 300 yogurt samples (sour, sweet and homemade traditional); 100 yogurt samples of each category were considered for this assay. To assess the health risks, the daily yogurt consumption rate and the value of target carcinogenic and non-carcinogenic risks of these yogurt samples were also determined. In sour yogurt samples, detected heavy metal contents were 0.398±0.121 mg/kg, 0.774±0.372 mg/kg, 0.087±0.021 mg/kg, 0.131±0.026 mg/kg, 0.011±0.006 mg/kg, 0.031±0.005 mg/kg, 0.445±0.267 mg/kg and 0.029±0.024 mg/kg while in sweet yogurt samples, detected heavy metal contents were 0.410±0.146 mg/kg, 0.704±0.324 mg/kg, 0.082±0.028 mg/kg, 0.146±0.025 mg/kg, 0.010±0.005 mg/kg, 0.030±0.007 mg/kg, 0.460±0.265 mg/kg, and 0.035±0.026 mg/kg and in homemade traditional yogurt samples, detected heavy metal contents were 0.410±0.147 mg/kg, 1.502±0.367 mg/kg, 0.085±0.020 mg/kg, 0.120±0.024 mg/kg, 0.011±0.005 mg/kg, 0.020±0.005 mg/kg, 0.251±0.174 mg/kg and 0.025±0.021 mg/Kg for Iron (Fe), Copper (Cu), Manganese (Mn), Zinc (Zn), Lead (Pb), Cadmium (Cd), Chromium (Cr) and Arsenic (As) respectively. Among the analyzed heavy metals, highest concentration of Cu and lowest concentration of Pb was detected in all yogurt types. The values of estimated daily intake (EDI), Target hazard quotient (THQ), Total THQ (TTHQ) and Target Carcinogenic risk (TCR) confirmed that, there have no chances of any kind of carcinogenic and non-carcinogenic risks from these yogurt samples.

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“…Currently, strict quality requirements are imposed on the quality of food, raw materials and food products (Sarsembayeva et al, 2020). Heavy metals are the most dangerous to human health.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Heavy Metals Migration in the Water - Soil - Fodder - Milk Food Chain in the Almaty Region

Sarsembayeva¹,

Abdigaliyeva²,

Utepova³

et al. 2021

OnLine Journal of Biological Sciences

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This study presents the results of monitoring heavy metals (Cd, Pb, As and Hg) in the water -soil -fodder -milk food chain. The research aimed to study the effect of lead, cadmium, mercury and arsenic in soil, water and components of the diet of cattle on their bioaccumulation in livestock products (milk) in basic farms of the Republic of Kazakhstan. The possibility of obtaining ecologically safe livestock products in meat and dairy cattle breeding has also been scientifically substantiated. A total of 120 soil samples, 60 water samples, 212 fodder samples and 60 milk samples were analyzed. Samples for the research were taken in spring, summer and fall in 2018 and 2019. Analysis of samples for the content of heavy metals was performed in the laboratory of the Kazakh-Japan Innovation Center at the Kazakh National Agrarian University. Determination of residual amounts of heavy metals (cadmium, lead, arsenic and mercury) was carried out on a novAA350 atomic absorption spectrometer (Analytik Jena, Germany) with a TaLab voltammetric analyzer. The obtained data allow concluding the degree of environmental pollution (water bodies, soil, agricultural fodder) and, consequently, the environmental safety of milk. Considering the data obtained, the authors have found that in the studied administrative districts of the Almaty region, the calculated transition coefficients in the water-soilfodder-milk system indicated that the largest transition of heavy metals was for lead and less migration was observed for mercury and arsenic. Fodders and feed additives preserved the tendency to accumulate trace elements. The analysis of heavy metals content in the study objects has shown that their distribution occurred in decreasing order: Lead > zinc > mercury > arsenic.

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Heavy metal levels in milk and fermented milk products produced in the Almaty region, Kazakhstan

Cited by 22 publications

References 16 publications

Heavy Metals Contamination and Physicochemical Properties of Nono Sold in Wushishi Local Government Area of Niger State, Nigeria

Heavy Metals Contamination and Physicochemical Properties of Nono Sold in Wushishi Local Government Area of Niger State, Nigeria

Potential Human Health Risks Assessment through Determination of Heavy Metal Contents in Regularly Consumed Yogurts in Bangladesh

Assessment of Heavy Metals Migration in the Water - Soil - Fodder - Milk Food Chain in the Almaty Region

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