One of the basic agricultural products which has a special place in the nutrition pattern of Iranian people is wheat, so that providing this product means creating food security. As we know the social welfare of the middle and poor classes is affected by this vital product. Wheat quality undergoes changes due to environmental factors including pests. The most important pests of cereals, especially wheat and barley in Iran, is sunn pest. This type of pest, causes a sharp decline in the quality of wheat baking in addition to small damage and yield reduction. There are various methods in industry to determine the quality of wheat flour. The purpose of existing research is to eva‎luate the solvent storage capacity method in comparison with the Aleograph device method to determine the quality of contaminated wheat flour at the levels (control, 2, 5 and 8%). In this research, the four main solutions of the solvent retention capacity test include: deionized water related to the overall quality of the sample, lactic acid related to glutenin macropolymers, sucrose related to pentosans, and sodium bicarbonate related to damaged starch. Three sub-solutions of the solvent retention capacity test were also used, including: ethanol associated with the characteristics of gliadins, sodium dodecyl sulfate associated with glutenin macropolymers, and sodium metabisulphite associated with the characteristics of gluten. The obtained results were analyzed in a completely random format and the Bonferroni test with a 5% probability level was used to compare the averages. The obtained results showed that the quality of wheat flour decreases with the increase in the amount of damaged wheat and that type of flour has low-quality polymers which have less capacity to hold the solvent and obtain low values of capacity to hold the solvent. while a pasty containing poor alveographic parameters was obtained. It can be said that the solvent storage capacity test has performed well in determining the quality of damaged wheat flour as well as the Alveograph method, so that the simple and cheap method can replace the expensive and costly Alleograph method.

مهدي كديور , محمدرضا سبزعليان دستجردي

جهانگير خواجه علي

حسن كريم مجني , نفيسه سلطاني زاده