The application of this research was implemented at the laboratories of
Food Science Department, Agriculture College, Damascus University in order
to investigate the effect of different ratios of added oil upon the rheological,
chemical and microb
ial characteristics of mayonnaise. The traditional
mayonnaise was made from fresh egg, vinegar, salt, mustard, citric acid and
corn oil at 70% ratio, to be used as a standard. Two changes in the oil ratio:
40% and 50% were applied for obtaining lower oil mayonnaise, with fewer
calories (Diet). The influence of adding Xantan gum as a substitute to oil
reduction, on the properties of final product was also investigated. Results
showed that the addition of Xantan gum at 1.5% was necessary to complement
the reduction in the added oil. The results also confirmed that reduction in the
added oil of the diet mayonnaise led to reduction in viscosity and firmness when
compared with the standard mayonnaise.
This study was carried out at the laboratory of Food Science Department,
Faculty of Agriculture, Damascus University in order to evaluate physical,
chemical and microbial properties of Akkawi cheese in Syria. Thirty samples of
Akkawi Cheese collec
ted randomly from different Syrian cities and urban
markets during 2011 were analyzed. Chemical and microbiological analyses
were applied to determine their suitability to the Syrian standards. Results
showed that the quality of cheese samples did not fulfill the set minimum
Syrian quality standards and the proportion of the violation of the Syrian
specification for total dry matter in cheese samples studied was nearly 10%,
and 100% for sodium chloride. The study also demonstrated differences in
chemical properties, with an average of acidity, moisture content 0.34 %, 53.9
% respectively. The fat content had a wide range for all cheese samples. On the
other hand, the proportion of health violation for this type of cheese from the
Syrian standard was 73.3 % for Coliform bacteria and 56.6 % for the E. coli.
but they were acceptable for the existence and account of Staphylococcus
aureus , Salmonella and Listeria.
