The Turkish Food Codex Sugar Communiqué (Communiqué no: 2006 / 2006) was published by the Ministry of Food, Agriculture and Rural Affairs in 40. This Communiqué covers the principles for producing, processing, preserving, storing, transporting and marketing of sugars by appropriate techniques and under hygienic conditions.

The communiqué covers white sugar, semi-white sugar, refined sugar, invert sugar syrup, invert sugar solution, sugar solution, glucose syrup, dried glucose syrup, fructose and powdered sugar.

In the communiqué, white sugar is defined as purified and crystallized sucrose with a polarization of at least 99,70 degrees, while semi-white sugar is defined as purified and crystallized sucrose with a polarization of at least 99,50 degrees.

Polarimeter is generally used to determine the value of the sugar's polarization. The polarimeter is used to determine the specific degree of rotation of the optical active substance. Lights with different wavelengths are broken to a different degree as they pass through a solution that exhibits optical activity. Sodium or mercury light is generally used in the polarimeter. There are special bulbs on the device that give these lights. The prism on the device polarizes the sodium light, ie it causes the light to vibrate in a plane. This polarized light passes through the solution placed in the test tube. The light passing through the tube differs depending on the strength of the solution and falls on the second prism. This prism measures the degree of refraction of light.

Optical activity in the food sector is used in the determination and identification of sugars. For example, if D-Glucose turns the polarized light to the left, glucose is shown in negative form, and if it turns to the right, it is shown in plus form. If a sugar is taken from the plus and minus forms equally and mixed, the light is neither right nor left.

Polarization value determination (optical rotation) of frying oils is carried out in laboratories. In these analysis studies, methods of analysis accepted in our country and foreign countries are followed. The standard used to determine the polarization value is:

• TS 861 White sugar (sucrose)