Physicochemical Characteristics of Various Milk Samples Available in the Local Market , Sana'a City , Yemen

2014 ◽  
Vol 7 (2) ◽  
pp. 169-178
Author(s):  
Maher Ali Al-Maqtari ◽  
Thurya Hussein Al-Huani ◽  
A. B. Mohamed Saad
2012 ◽  
Vol 10 (1) ◽  
pp. 95-100 ◽  
Author(s):  
M F I Kajal ◽  
A Wadud ◽  
M N Islam ◽  
P K Sarma

The study was undertaken to evaluate some chemical parameters of powder milk available in Mymensingh town. Powder milk samples of six different brands namely Kwality, NIDO, Diploma, Anchor, Farmland & Starship were collected from local market. Powder samples were analyzed to know the chemical (PH, acidity, fat, protein, lactose, ash, moisture, solids-not-fat, total solids) characteristics. PH, acidity of all samples was almost similar to the cow milk  when the dried milk was reconstituted. PH ranged from 6.6-6.8, acidity from 0.10-0.15, fat from 26.198-27.89 g/100 g,  protein from 25.22-27.01 g/100g, lactose from 36.63-37.65 g/100g, ash from 5.34-5.48 g/100g, moisture from 3.36-4.48 g/100g, solids-not-fat from 67.99-70.07 g/100g, total solids from 95.51-96.63 g/100g, among the brands of powder milk. Statistical analysis showed significant variation for (PH and acidity) among different powder milk brands. chemical parameters in all brands of milk powder was found as per recommended standard. DOI: http://dx.doi.org/10.3329/jbau.v10i1.12099 J. Bangladesh Agril. Univ. 10(1): 95–100, 2012    


2020 ◽  
Vol 43 (2) ◽  
pp. 141-148
Author(s):  
Afrin Sultana ◽  
MM Mahfuz Siraz ◽  
Shikha Pervin ◽  
AFM Mizanur Rahman ◽  
Suranajan Kumar Das ◽  
...  

Sixteen samples in three categories vegetables, cereals (rice, wheat, maize, pulse) and powdered milk were collected from local markets (Dhaka city) in Bangladesh and analyzed by using High Purity Germanium (HPGe) Detector for the assessment of natural and artificial radioactivity. In vegetables (potato, raw banana, giant taro, red amaranth), the average activity concentrations of 232Th, 226Ra, and 40K were found to be 37.82±11.57, 54.93±9.98 and 617.43±65.69 Bqkg-1 respectively, for cereals (rice, wheat, maize, pulse) 24.01±3.67, 31.46±4.00 and 474.83±27.68 Bqkg-1 respectively and for milk samples 15.01±3.65, 26.73±6.77 and 494.21±38.71 Bqkg-1 respectively. The average values of outdoor annual effective dose were found to be 92.18, 61.19 and 52.37μSvy-1 in vegetables, cereals and milk samples respectively. No artificial radionuclide was found in any of these samples. The average value of radium equivalent activity in all samples was 113.89 Bqkg-1 which was less than maximum permissible value 370 Bqkg-1. The values of external hazard indices for vegetables, cereals and milk samples varied from 0.31 to 0.66, 0.17 to 0.40 and 0.11 to 0.36 respectively which is less than unity in all samples that indicate the non-hazardous nature of the samples. The average values of annual effective ingestion dose rate from foods (for adult) were 274.33 μSvy-1, 533.60μSvy-1, and 132.73μSvy-1for 232Th, 226Ra and 40K respectively. These data would be useful to establish a baseline for natural radioactivity concentrations in food items consumed in Bangladesh. Journal of Bangladesh Academy of Sciences, Vol. 43, No. 2, 141-148, 2019


1969 ◽  
Vol 97 (3-4) ◽  
pp. 171-180
Author(s):  
Garry Gordon ◽  
Tomas Ayala-Silva ◽  
Stewart Reed

Carambola (Averrhoa carambola L.) is a commercial fruit crop predominantly grown in south Florida, USA, for the local market. Ten carambola cultivars from the USDA-ARS germplasm collection in Miami, Florida, were evaluated on a Krome gravely loam soil for sweetness, acidity, size and color. Physical characteristics of fruits were determined by measuring fruit length, diameter and weight. Carambola physicochemical characteristics were determined by measuring the Brix, pH, firmness and fruit color (L*, a*, b*). Tean Ma' had a significantly lower pH than other cultivars used in the study. 'Hew 1' was significantly longer and 'Fwang Tung' had a significantly greater diameter compared to other carambolas. The L value for 'Arkin' was significantly lower than for other carambola cultivars but the b* value of 'Wheeler' was significantly higher. There was a significantly greater amount of seeds produced by 'Arkin' in comparison to other cultivars used in the study. The results demonstrated that 'Kary', 'Key West', and 'Wheeler' produced large sweet fruit and could be planted in the hot humid South Florida environment.


Author(s):  
A. Bousbia ◽  
S. Boudalia ◽  
Y. Gueroui ◽  
B. Belaize ◽  
S. Meguelati ◽  
...  

The main objective of this study is to assess nutritional and hygienic qualities of raw milk collected in situ in dairy cattle farms in the region of Guelma, Algeria. For this purpose, a total of 144 milk samples were collected and analyzed to determine their physicochemical characteristics and bacteriological quality. Results showed an acceptable nutritional quality, with a poor bacteriological quality. The average contamination was 11.69 x 105 CFU ml-1 for total flora, against 23.44 x 105 CFU ml-1 for total Coliforms and 7.34 x 104 CFU ml-1 for fecal Coliforms. In addition, 6% of total samples were positive for Clostridium. For the suspected pathogenic flora, Staphylococcus aureus has been detected in 9 samples; however, all milk samples were devoid of Salmonella. The poor quality of milk reflects the dismal conditions of production and the no-control of hygienic practices.


2018 ◽  
Vol 7 (2) ◽  
pp. 13-19
Author(s):  
Nazia Afrin ◽  
SM Rokon Ud Doula ◽  
Rasheda Yasmin Shilpi

The present study was undertaken with the aim of investigating the bacteriological quality of locally available raw, pasteurized and UHT milk in Gazipur District. A total 5 raw, pasteurized and UHT milk samples were collected during November to December 2016. All the pasteurized and UHT milk samples showed the total aerobic heterotrophic bacterial (TAHB) level above the standard acceptable range (i.e. > 104 cfu/ml for pasteurized milk and > 0 for UHT milk). Both Gram positive and Gram negative pathogenic bacteria viz. Staphylococcus aureus, S. epidermidis, Bacillus sp., Pseudomonas sp. and Enterobacter sp. were isolated from studied samples. API 20 E was used for confirmation of Pseudomonas sp. This study indicates that most of the pasteurized and UHT milk samples were not satisfactory in terms of public health standard. Therefore, care must be taken to avoid possible health risk in every step involving collection, transportation, storage and post pasteurization handing of raw milk. Jahangirnagar University J. Biol. Sci. 7(2): 13-19, 2018 (December)


2021 ◽  
Vol 12 (1S) ◽  
pp. 204-211
Author(s):  
Noor Syaheera Ibrahim ◽  
Farida Hani Ahmad Tajuddin

Milk is an important elements due to its high nutritious and balanced in human diet. In Asian, goat milk is the most consumed because of the unique taste, more nutritious than cow milk. However, milk production and composition values differ at every stage of lactation in goats. Thus, determining the highest milk production and producing the best quality goat milk is essential to satisfy the local market demands. The objective of the present study is to determine the milk yield and milk composition at different lactation stages and to evaluate the lactation curves in Saanen goats. The lactation stages can be categorized into three, early (less than 80 days), mid (80 – 140 days) and late (over 140 days) days in milk (DIM). In total, 90 milk samples were collected from 15 goats representing early (n=5), mid (n=5), and late (n=5) stages of lactation. The Saanen goats were raised under the same conditions, and milking was done early in the morning (9.00am).The milk yield from Saanen goats were collected and measured weekly at each stage of lactation. Milk samples were analyzed for fat, protein, solid non-fat, and lactose. Current result illustrated, there were significant different (p ˂ 0.05) among three stages of lactation in milk yield, solid non-fat, fat, protein and lactose. In terms of food regulation, the Saanen goats almost fully met the standard requirements for milk production and composition. In addition, this study also observes the lactation curves in Saanen goats and analyse the curve shapes and patterns. The average milk yields from three different stages develops a concave downward curve. The results indicated that mid yield increased from early to mid- lactation and decreased thereafter until the end of lactation.


Author(s):  
Ebegbulem, Victoria N. ◽  
Nwanjoku, Janet E.

Goat milk is a suitable alternative to human milk owing to its high beta casein content which makes it very digestible unlike cow milk. Moreover, the West African Dwarf goat is highly trypano- tolerant and thrives excellently in the humid forest zone of Nigeria. It  therefore necessitated the need to expound its potential in human nutrition in the study area. The objectives of the study were to evaluate the proximate, mineral composition and physicochemical characteristics of milk of West African Dwarf goats in Cross River State, Nigeria .Twenty five lactating West African Dwarf does within the age of 3-5 years were milked from five Local Government Areas of Cross River State (Calabar South, Calabar Municipal, Akamkpa, Biase and Odukpani) in which three goat milk samples were obtained by hand milking from each location. Data collected were presented using descriptive statistics. Completely randomized design was used to study the relationship between components of the milk samples. Proximate components of milk were crude protein (3.91-6.35%), ether extract (2.69-5.04%), Ash (1.51-1.95%), Nitrogen free extract (88.68-90.32%) and moisture content (77.72-85.56%). Values of physicochemical components were: Total Acid (0.16-0.21%), Total solid (12.30-13.30%), Density (0.90-1.95%) and pH (6.50-6.90%). Elemental components (mg/100g) were potassium (202-64-204.39), sodium (49.06-49.96), calcium (133.18-133.98), magnesium (13.96-14.07), iron (0.04-0.07), zinc (0.30-0.32) copper (1.32-1.35) and phosphorus (110.32-110.98). Proximate composition of milk samples from the different locations varied significantly (p>0.05).Similarly, the physicochemical composition from the locations also varied significantly (p<0.05) with exception to milk pH with no significant difference. Mineral elements of milk samples from different locations were not significantly different except the potassium content in milk from Odukpani which was significantly lower than the other locations. Goat milk from the study locations met the nutritional standards in terms of proximate, mineral and physicochemical composition. Results from this research provides veritable information of the nutritional content of goat milk in the study locations particularly and help encourage the incorporation of goat milk in the diet of Nigerians generally.


2008 ◽  
Vol 9 (7) ◽  
pp. 546-551 ◽  
Author(s):  
Mohammad Imran ◽  
Hamayun Khan ◽  
Syed Shah Hassan ◽  
Rasool Khan

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
S. H. Gwandu ◽  
H. E. Nonga ◽  
R. H. Mdegela ◽  
A. S. Katakweba ◽  
T. S. Suleiman ◽  
...  

Milk quality depends on the physicochemical characteristics, hygienic standards, and nutritional quality; however, animal husbandry practices, unhygienic harvesting and processing, may affect its quality. A cross-sectional study was conducted between August 2010 and July 2011 to assess the hygiene of cow milk production environment, raw cow milk physicochemical characteristics, and microbial quality and estimate the prevalence of antimicrobial residues using standard methods in Pemba Island. A total of 98 raw cow milk samples from selected smallholder dairy farms were analyzed, and the judgement on the quality used the East African Standards. Generally, the milk production chain was done under the unhygienic condition, and dirty plastic containers were used for collection and storage of milk under room temperature. Some milk samples had abnormal colour (2.1%), abnormal smell (7.1%), and pH below normal (35.7%), clotted on alcohol test (9.2%), and had the specific gravity below normal (13.3%). All the milk samples had mineral contents within the recommended range. Milk samples with butterfat below normal were 29.6%, while 14.3% had total solids below recommended values. The mean total viable count (TVC) of milk container surfaces was9.7±10.5 log CFU/100 cm2, while total coliform count (TCC) was7.8±8.5 log CFU/100 cm2. Up to 55.1% of milk had TVC beyond the recommended levels. The milk mean TVC was11.02±11.6 log CFU/ml and TCC was6.7±7.3 log CFU/ml. Up to 26.5% of milk samples had the TCC beyond levels. Results on physicochemical characteristics and nutritional analysis show that the raw cow milk in Pemba Island is of inferior quality. Microbiological results of this study imply heavy contaminations of milk. Antimicrobial residues were detected in 83% of the samples and most of them were from Wete District. Unhygienic milk production chain accelerates microbial contaminations, and antimicrobial residues in milk are a big problem that needs urgent attention from the responsible authority.


2021 ◽  
Vol 9 (08) ◽  
pp. 464-466
Author(s):  
Berna Yanmaz ◽  

Coxiellaburnetii is an obligate intracellular Gram-negative bacterium that causes Q fever in humans. Detection of Coxiellaburnetii in raw milk sample is accomplished by polymerase chain reaction (PCR) or enzyme-linked immunosorbent assay (ELISA) methods. This study was aimed to determine the seroprevalence of coxiellaburnetii in bulk tank milk samples of 24 cattle and 8 goats, which were offered for sale in Erzurum, Turkey. Moreover, pH values were also measured to detect possible relation with pH value and C. burnetiiseropositivity of milk sample. C. burnetii was found positive in 16 (66.7%) of the 24 cattle bulk tank milk samples, and 1 (12.5%) of the 8 goat milk. No statistically significant relation was observed between pH values and positivity of cattle bulk tank milk samples. In conclusion, seropositivity of the milk samples were very high in Erzurum, Turkey. The raw milk sold in local market may cause shedding of Q fever. Therefore, the raw milk should be subjected to heat treatment before consumption to prevent possible transmission of Q fever disease.


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