Determining Total Phenolic Compound, Tannin and Anthocyanin Ratios of Grape Varieties Cultivated in Şanlıurfa Province

Abstract

This study was conducted to determine the total phenolic compound, tannin, and anthocyanin ratios in 29 grape varieties cultivated in Şanlıurfa Province in 2013 and 2014. The skin, fruit flesh and seeds of grape varieties were analyzed separately by using spectrophotometric methods. As a result, in this study conducted; It has been determined that grape varieties are rich in phenolic compounds and their content differs from each other. Comparison of the white and colored varieties showed that total phenolic compound and anthocyanin contents of colored varieties were higher in skin, flesh and seed. Besides, this study determined that total tannin content of colored varieties was higher in skin and flesh, while it was at the same level in seeds of both colored and white varieties. Moreover, the study revealed that different climatic structures have an effect on the accumulation of phenolic compounds in the berry over the years.