Related Experiment Video
Updated: Feb 1, 2026

A Method of Trigonometric Modelling of Seasonal Variation Demonstrated with Multiple Sclerosis Relapse Data
Published on: December 9, 2015
A study on the aflatoxin M1 rate and seasonal variation in pasteurized cow milk from northwestern Iran
Fereshteh Ansari1,2, Hadi Pourjafar3, Lane Christensen4
1Research Center for Evidence-Based Medicine, Health Management and Safety Promotion Research Institute, Tabriz University of Medical Sciences, Tabriz, Iran.
Abstract:
Present study aims to assess aflatoxin M1 (AFM1) contamination in 100 samples of pasteurized milk which were conventionally gathered during spring, summer, autumn, and winter from supermarkets located in Maragheh city of northwestern Iran. Samples were evaluated for AFM1 with a high-performance liquid chromatography (HPLC) method and with fluorimetric detection. The results showed that approximately 44% (11.25) of samples in winter, 32% (8.25) of samples in spring, 24% (6.25) of samples in summer, and 20% (5.25) of samples in autumn had AFM1 concentrations that exceeded the limit (0.05 μg/l) set by the European, Codex Alimentarius Commission and Iran standards. According to the statistical analysis of the data, there was no significant variation between the mean content of AFM1 during different seasons (P = 0.076). The results of our study suggest a high level of contamination of AFM1 in pasteurized milk in all seasons which may be due to the fact that milk supply for dairy factories is provided from dairy farms that are low in livestock feed quality. In Iran, pasteurized milk is consumed more than other milk products by all age groups. The total daily aflatoxin intake from contaminated milk and possibly other food products will be a significant risk to public health.
More Related Videos
10:24Author Spotlight: Quantification of Aflatoxins and Phytoalexins in Peanut Seeds to Identify Genetic Resistance Against Aspergillus
Published on: April 19, 2024
07:38Milk Collection in the Rat Using Capillary Tubes and Estimation of Milk Fat Content by Creamatocrit
Published on: December 16, 2015
Related Concept Videos
Seasoning of Wood
Achieving equilibrium moisture content is the goal of seasoning; this is the point where the wood's moisture content stabilizes to align with the moisture levels of the surrounding environment. Proper...
What is Variation?
The range, standard deviation, standard error, and variance are the different measures of variation.
Range: The range is the difference between its maximum and...
Biological Clocks and Seasonal Responses
Variation
When independent and dependent variables are plotted on a scatter plot, the slope of a line is a value that describes the rate of change between the two...
Conservative Site-specific Recombination and Phase Variation
The recognition sites for Cre recombinase called LoxP...
Variation of Atmospheric Pressure
Assuming the air temperature is constant at a given altitude and that the ideal gas law of thermodynamics describes the atmosphere to a good approximation, one can find the variation of atmospheric pressure with height.
Let p(y) be the atmospheric pressure at...