فهرست مطالب پیام صفایی

Hydrogen peroxide is one of the compounds that is primarily produced by the oxidation of oil and fat and causes various diseases, including atherosclerosis and coronary artery disease .The aim of this study was to survey the peroxide value of edible oils used in sandwich and falafel shops in Tehran in 2016.
In this study, sampling from a number of fast food centers was done randomly. After the transfer of samples to the chemistry laboratory of environmental health engineering department, the peroxide number was determined based on the national standard procedure 4179. The data was analyzed by SPSS software for descriptive statistical parameters and t-test.
According to the National Iranian Standards, from total of 50 samples of the sandwiches taken, 20 samples (40 %) were consumable and 30 samples (60 %) were inedible. Also, from 40 samples of falafel taken, 14 samples (35 %) were consumable and 26 samples (65 %) were inedible. The maximum peroxide values of sandwiches and falafel were 29.79 and 31.22 meq/kg, respectively.
The findings show that Peroxide value in the sandwich and falafel shops were higher than the standard, and thus it seems that having an educational plan for staff regarding the correct methods of frying food is necessary.

Attitude, as the most important social psychology concept, has a special place in research; undoubtedly, in university life having a positive attitude is essential for success in any field of study. The aim of this study was to determine tha attitude of food safety and hygiene students toward their field of study and future career in the Iranian universities of medical sciences.
This was a descriptive cross-sectional study, conducted in 2016, including 77 food safety and hygiene students in the Iranian universities of medical sciences, selected by census. Data were collected using a questionnaire containing 24 questions and analyzed by SPSS-24 software, the statistical tests being descriptive statistical tests.
The attitude score (Mean ± SD) of the students toward their field of study was 35.0 ± 12.4, indicating that they had a positive attitude, while the score of their attitude toward future career was 23.05 ± 10.86, which was less than acceptable. Further analysis of the data showed a significant association between the students’ attitude toward their field of study and employment status (p = 0.036).
Based on the results of this study, the food safety and hygiene students have a positive attitude towards their field of study, while their attitude toward future career is lower than acceptable, which demonstrates lack of a desirable attitude. Strengthening of training programs and advice and support for the students can play an effective role in reinforcing their attitude.