Showing 5 results for Milk
Gh.r Jahed Khaniki , A Kamkar , M.a Tehrani ,
Volume 3, Issue 3 (6-2005)
Abstract
A study was carried out to estimate the prevalence of Coagulase – Positive Staphylococcus aureus in milk collected in the milk collecting center in Garmsar city. Ninety-six raw milk samples (84 composite samples and 12 bulk samples) were collected from Garmsar milk collecting center. Raw milk samples were transferred to laboratory in safe conditions. After serial dilution, the appropriate concentrations (10 -2 to 10 -6) were cultured on Baired- Parker agar medium. The plates were incubated at 37 oC for 2 days (48h). After 48 hours' incubation, the colonies with black centers and light areas were used for staphylococcal assay. The coagulase test was done with rabbit plasma and coagulate- positive colonies were then counted. The results showed that mean counts of coagulate-positive Staphylococcus aureus in composite and bulk milk were 5.4 ×10 5 cfu/ml and 3.2 × 105 cfu/ml, respectively. The counts ranged from 8.6 × 10 4 to 2.1 × 10 6 cfu/ml and 1.4 ×10 5to 5.5 × 10 5 cfu/ ml. The standard deviations were 3.5 × 10 5 cfu/ml and 1.4 × 10 5 cfu/ml respectively. It is clear that the milk collected at this facility was rather heavily contaminated with S. aureus. Therefore, it may constitute a health hazard because of the possible production of enterotoxin in the milk consumed by the people. In order to reduce staphylococcal contamination in milk, it is recommended to treat cases of clinical and subclinical staphylococcal mastitis in livestock. Also, it is necessary to use hygienic procedures during the production process as well as transportation and storage.
Salari M.h., Sharifi M.r., Golzari M., Sarabadi A.a., Kafilian H,
Volume 4, Issue 1 (4-2006)
Abstract
Background and Aim: As the population of the world increases, it is essential that food production keep pace. It will be necessary not only to produce more food, but also to maintain this food so that it is safe and wholesome for human consumption. The purpose of this study was to investigate the rate of Coliform, Staphylococcus aureus, Mould, Yeast and other aerobic and mesophilic bacteria as contaminats of milk and milk products in Yazd province.
Material and Methods: In this study a total of 198 different samples including Milk (24.2%), Yoghurt (21.2%), Cream (12.1%), Cheese (18.2%), Ice cream (12.1%) and dairy powders (12.1%) were investigated by culture method and biochemical tests. Then obtained data were analyzed by SPSS and χ2 programs.
Results: On the basis of our findings, of the total samples, 136 cases (68.7%) were desirable, 48 cases (24.2%) acceptable and 14 cases (7.1%) undesrable. Microbial contaminants of undesrable samples were coliform (7.1%), Staphylococcus aureus (6.1%) and yeast (6.1%). Meanwhile, the results of χ2 Statistical analysis test, showed significant different between contamination rate and kind of Milk products (df = 5, χ2 = 17.75, P<0.005(.
Conclustion: It seems that despite the efforts, which have been done for prevention of food contamination in Yazd province, it is still considered as a threat for people Health.
M Mahami, M Moheb Ali, H Keshavarz, H Hajaran, B Akhoondi, Z Zarei, S Charedar,
Volume 4, Issue 1 (4-2006)
Abstract
Background and Aim: As the population of the world increases, it is essential that food production keep pace. It will be necessary not only to produce more food, but also to maintain this food so that it is safe and wholesome for human consumption. The purpose of this study was to investigate the rate of Coliform, Staphylococcus aureus, Mould, Yeast and other aerobic and mesophilic bacteria as contaminats of milk and milk products in Yazd province.
Material and Methods: In this study a total of 198 different samples including Milk (24.2%), Yoghurt (21.2%), Cream (12.1%), Cheese (18.2%), Ice cream (12.1%) and dairy powders (12.1%) were investigated by culture method and biochemical tests. Then obtained data were analyzed by SPSS and χ2 programs.
Results: On the basis of our findings, of the total samples, 136 cases (68.7%) were desirable, 48 cases (24.2%) acceptable and 14 cases (7.1%) undesrable. Microbial contaminants of undesrable samples were coliform (7.1%), Staphylococcus aureus (6.1%) and yeast (6.1%). Meanwhile, the results of χ2 Statistical analysis test, showed significant different between contamination rate and kind of Milk products (df = 5, χ2 = 17.75, P<0.005(.
Conclustion: It seems that despite the efforts, which have been done for prevention of food contamination in Yazd province, it is still considered as a threat for people Health.
Elham Gheysvandi, Hassan Eftekhar Ardebili, Kamal Azam, Mohammad Reza Vafa, Mojtaba Azadbakht, Tohid Babazadeh, Shadi Fathizadeh,
Volume 13, Issue 2 (9-2015)
Abstract
Background and Aim : Milk and dairy products provide more than 50% of the calcium requirement in the daily diet of Iranians. In order to promote adolescents’ health and prevent the devastating effects of osteoporosis in adulthood, appropriate action should be taken to increase milk consumption among adolescents. The objective of this study was to increase milk and dairy products consumption among eighth-grade girl-pupils in Kamyaran City, Iran through designing and implementing an educational program based on the theory of planned behavior (TPB).
Materials and Methods : This was a quasi-experimental study conducted in 2014, including a total of 168 eighth-grade girl-pupils from two (out of six) schools, one as the intervention and the other as the control group, selected randomly by cluster sampling. The intervention group received education in 4 sessions, the educational tools being a pamphlet and a poster. Data were collected on the TPB constructs, food intake (by 24-hour dietary recall), and frequency of milk and dairy product intakes during the previous 3 days. All the participants completed the questionnaires at the beginning and 3 months after the intervention. The data were analyzed using the SPSS-18 software, the statistical tests being chi-square, independent-t and paired t-tests.
Results : The intervention brought about statistically significant increases in the mean scores of behavior intention, attitude, subjective norms, and perceived behavioral control (p<0/001). In addition, an increase was observed in the frequency of milk and dairy product intake, which was 0.36 units per day initially (p<0/001).
Conclusion : Considering the effectiveness and low cost of this intervention, expanding this program can potentially lead to a rise in milk and dairy products consumption among the pupils.
Maryam Tajmahal, Ebrahim Rahimi,
Volume 22, Issue 4 (3-2025)
Abstract
Background and Aim: Q fever, caused by Coxiella burnetii, is a zoonotic disease widely distributed in humans and livestock. It affects domestic animals, wildlife and humans. This disease is asymptomatic in livestock and its clinical consequences include abortion, stillbirth, infertility, mastitis and endometritis. Unpasteurized milk and dairy products are the most important source of transmission of C. burnetii to humans. The aim of the present study was to investigate the prevalence of C. burnetii in traditional cheese and raw cow's, sheep's, goat's and buffalo’s milks
supplied in Qom city, Iran using the Nested PCR method.
Materials and Methods: Initially 150 samples including 30 samples of traditional cheese and 120 samples of raw cow's, sheep's, goat's and buffalo’s milks were selected from the supply centers in Qom city in the summer of 2024 and transferred to the laboratory under sterile conditions to prevent secondary contamination. The samples were tested using the Nested PCR method to detect contamination.
Results: The results showed that out of a total of 120 samples of raw ruminant milk and 30 samples of traditional cheese, 8 samples (5.33%) were contaminated with Coxiella burnetii. The proportions of contaminated samples in cow's, sheep's and goat's milks and traditional cheese were 3 (2%), 1 (0.67%), 1 (0.67%) and 3 (2%), respectively; buffalo raw milk was not contaminated.
Conclusion: Based to the results of the present study, it is recommended to prohibit the consumption of raw dairy products to reduce the risk of pathogenicity and infection by Coxiella burnetii.
