Investigation of phytochemical and antioxidant changes of two strawberry fruit cultivars during storage in 4 0C

Strawberry (Fragaria × ananassa) is a plant belonging to the rose family, one of the most important small fruits, which is one of the most popular and widely used berries in the world due to its sweet aroma and taste. In this study, changes in qualitative and phytochemical traits of Kamaroza and Parus strawberry cultivars during 15 days of storage at 4 °C were investigated. In order to determine the possible contamination of strawberry fruit with contaminants, the amount of heavy metals was investigated using the emission spectroscopy technique by ICP. The results of comparing the studied traits in two strawberry cultivars showed that the amount of phenol, flavonoids, flavonols, anthocyanins and carbohydrates in Camarosa cultivar was significantly higher than Parus cultivar. But in terms of fiber content, Parus cultivar had more fiber content. Based on the results of comparing the data of two strawberry cultivars, after 15 days of storage, the amount of phenol, flavonoids, flavonols, carbohydrates and antioxidant capacity showed a significant increase only in Camarosa cultivar. These studies show that in terms of nutritional value and preservation of natural compounds during storage and post-harvest conditions, the type of strawberry cultivar is a determining factor, so that Camarosa has a special advantage over Parus cultivar. Examination of heavy metal results in two strawberry fruit cultivars showed that except for the amount of zinc metal, which in both strawberry species is less than the limit accepted by the World Health Organization, the amount of other heavy metals studied was higher than the standard.