Evaluation of Physio-Chemical Properties of Locally Produced Raw Milk in Sylhet City Corporation Area, Bangladesh

Alam, Shahrul; Zaman, M. A.; Roy, Sawrab; Ahmed, Jasim Uddin; Das, Moumita; Chowdhury, Qamruzzaman; Proma, Shatabdi Deb; Popy, Farzana Yeasmin

doi:10.9734/afsj/2018/42679

Cited by 5 publications

(15 citation statements)

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“…In this present study, all cow and buffalo raw milk samples find out a satisfactory requirement according to FASSI regulations (2011). The present findings are in agreement with Bailone et al (2017), Alam et al (2018), Gupta et al (2020), andBecskei et al (2020) recorded average fat content between 3.70 to 5.97% in different breeds of cows and buffaloes. The maximum protein content of cow milk was noted numerically in sample 4 (3.62±0.110%) whereas raw milk protein content of samples no.…”

supporting

confidence: 93%

Physicochemical and microbial quality of cow and buffalo raw milk collected from different organized dairy farms of Varanasi, India

Lal¹,

Chandra²,

Arvind³

et al. 2021

IJDS

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The current study was carried out to estimate the physicochemical properties, microbial quality, and adulteration pattern of cow and buffalo raw milk collected from different organized dairy farms in Varanasi, India. Raw milk samples were analyzed and found that the cow's raw milk constituents i.e. the per cent of lactose (4.31) was significantly (P<0.05) different whereas fat (3.76), protein (3.37) solid not-fat (8.51), and specific gravity (1.028) were observed non-significant among collected samples. However, the percent of fat (6.63), protein (4.17), and specific gravity (1.029) were recorded significantly (P<0.05) different but the average percentage of lactose (4.81) and solid not-fat (8.95) was noted non-significantly different in the raw milk of buffalo. All raw milk samples were of good quality grades as determined by the MBRT test. The microbial count confirmed the presence of significantly (P<0.05) low microbial load in all cow (3.53 log CFU/ml) as well as in buffalo raw milk (3.46 log CFU/ml) samples. In adulterations analysis; all raw milk samples were free from water, starch, cane sugar, and glucose. Besides different hazardous chemical adulterants, all raw milk samples were free from urea, hydrogen peroxide, ammonium, and nitrates.

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supporting

confidence: 93%

Physicochemical and microbial quality of cow and buffalo raw milk collected from different organized dairy farms of Varanasi, India

Lal¹,

Chandra²,

Arvind³

et al. 2021

IJDS

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“…Furthermore, due to the pleiotropic nature of cytokines/ growth factors in regulating mammary gland development and inflammation, it was concluded that they play a role in the innate immune responses to mastitis and maintenance of homeostasis. MANUFACTURERS 1 DeLaval International AB. Tumba, Sweden.…”

Section: Discussionmentioning

confidence: 99%

“…Somatic cell count was performed on milk samples taken from cows belonging to the determined groups. It was measured in fresh milk by using the DeLaval Cell Counter® (Cell counter DCC) 1 device according to the guidelines. After milk SCC analysis, milk samples were stored at -80°C until TGF-β1 and TNF-α analysis.…”

Section: Somatic Cell Countmentioning

confidence: 99%

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Changes in Somatic Cell Count, Composition and Cytokine Levels in Milk from Cows with Mastitis Due to Mixed Infections

Safak

Rişvanlı

2021

Acta Scientiae. Vet.

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Background: Mastitis is a mammary gland inflammation that is very common worldwide, mostly caused by bacteria, and causes enormous economic losses. Many microorganisms cause this disease. The most common causes of mastitis by these microorganisms are Staphylococcus aureus (S. aureus), Escherichia coli (E. coli) and Streptococcus agalactiae (S. agalactiae). The anti-inflammatory properties of transforming growth factor (TGF)-β include: 1) limiting interferon (IFN)-γ production; 2) increasing the expression of the ınterleukine (IL)-1 receptor antagonist; 3) inhibiting macrophage production of chemokines, pro-inflammatory cytokines, nitric oxide, and reactive oxygen intermediates; and 4) increasing macrophage clearance of bacterial debris and damaged parenchymal cells. It is stated that cytokines and milk composition change in case of mastitis. In this study, it was aimed to reveal the changes in milk TGF-β1 and Tumor necrosis factor (TNF)-α concentrations and milk composition in mixed infections caused by three pathogens causing mastitis.Materials, Methods & Results: In this study, milk samples from 90 cows were divided into 5 groups. Tumor necrosis factor (TNF)-α and TGF-β1 concentrations and milk composition were determined in these milk samples. The California Mastitis Test (CMT) was applied to the cows included in the study and scoring was done. According to the CMT results of the milk samples taken, CMT(-) cows were included in group 1 (n = 22). Those with the CMT(+) were taken to the microbiology laboratory for analysis within 2 h. After the bacteria was determined, combination groupings were formed. Group 2 (n = 17) with S. aureus and E. coli, group 3 (n = 21), S. agalactiae with S. aureus, S. agalactiae and E. coli together, group 4 (n = 8) and CMT (+) but no bacterial growth formed group 5 (n = 22).Somatic cell counts were made in the milk samples taken from the cows belonging to the groupings. Somatic cell count was measured with the DeLaval Cell Counter® (Cell Counter DCC) device. Mineral matter, fat, protein, lactose, electrical conductivity and specific gravity were measured in milk samples using Lactoscan Milk Analyzer (Milkotronic/EUROPE). Milk samples were then stored at -80°C to measure TGF-β1 and TNF-α. Tumor necrosis factor-α and TGF-β1 concentrations in milk samples were measured using ELISA kits (Sunred Biological Technology).Discussion: Changes in milk TNF-α and TGF-β1 concentration and milk composition were determined in milk samples with mastitis caused by mixed infection. The TNF-α concentration of group 4 was higher than the other groups. On the other hand, the highest concentration of TGF-β1 was found in group 2. While the number of somatic cells in group 1 was lower than in groups 2, 3, and 4, there was no statistical difference between groups 1 and 5. The lowest milk fat ratio was found in group 1, and it was found to be statistically lower than groups 2, 3, and 4. While the rate of solid-non-fat of group 1 increased compared to groups 2 and 3, the highest protein ratio was found in groups 1 and 5. There was no difference between the 5 groups in terms of mineral matter ratios. While the specific gravity was highest in group 1, there was no statistical difference between the other 4 groups. Overall, it was concluded that there was an increase in TNF-α and TGF-β1 concentrations and a change in milk composition in samples with bacterial growth.Keywords: bovine mastitis, cytokine, milk composition, raw milk, transforming growth factor.

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“…Fat (%), solid-non-fat (%), protein (%), lactose (%), mineral matter (%), specific gravity (kg/m 3 ) and electrical conductivity (mS/cm) in the milk samples were measured using a Lactoscan Milk Analyser (Milkotronic/EUROPE) device. Measurements were made in fresh milk and as described by Alam et al (2018). Milk analysis were performed in the Obstetrics and Gynecology Milk Laboratory of Fırat University.…”

Section: Milk Analysismentioning

confidence: 99%

Impact of Subclinical Mastitis-causing Bacterial Species on the Composition and Chemical Properties of Milk

Safak

Rişvanlı

Toraman

2021

IJAR

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Background: Here we investigate whether the composition and some chemical properties of milk can correlate with bacterial species causing subclinical mastitis in cows. Methods: One hundred and eighty cows were used in the study. The California Mastitis Test (CMT) was applied to the selected cows. The cows were divided into four groups: cows with negative CMT (n = 45), the Escherichia coli (n = 45), Streptococcus agalactiae (n = 45) and Staphylococcus aureus (n = 45) groups. Result: Milk composition and some chemical properties were measured. The highest fat ratio (5.82±0.34%) was found in the Escherichia coli group (p less than 0.05). The proportions of solid-non-fat (9.67±0.09%), protein (3.51±0.03%), lactose (5.29±05%) and mineral matter (0.75±0.01%) were lowest in the Escherichia coli group (p less than 0.05). The electrical conductivity of milk was lowest in the CMT-negative group (4.23±0.02 mS/cm), while the Streptococcus agalactiae group had the highest value (4.61±0.02 mS/cm) (p less than 0.05). The specific gravity of the Escherichia coli group was lower than the CMT-negative (1,034.91±0.56 kg/m3) and Staphylococcus aureus (1,034.24±0.65 kg/m3) groups (p less than 0.05). Based on our findings, we propose that milk composition and some chemical parameters are altered in subclinical mastitis. However, these could not be standardized according to the responsible bacterial species. We recommend that these parameters are monitored regularly on dairy farms.

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Evaluation of Physio-Chemical Properties of Locally Produced Raw Milk in Sylhet City Corporation Area, Bangladesh

Cited by 5 publications

References 0 publications

Physicochemical and microbial quality of cow and buffalo raw milk collected from different organized dairy farms of Varanasi, India

Physicochemical and microbial quality of cow and buffalo raw milk collected from different organized dairy farms of Varanasi, India

Changes in Somatic Cell Count, Composition and Cytokine Levels in Milk from Cows with Mastitis Due to Mixed Infections

Impact of Subclinical Mastitis-causing Bacterial Species on the Composition and Chemical Properties of Milk

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