Comparative analysis of extractives tubers grades dahlias depending on the solvent

Abstract

Max extractives from tubers represented grades of purified water were recovered. The highest values were observed in varieties Colorado Classic (36,09 ± 0,31%) for that solvent. Extractives content in the tuber varieties Smuglyanka and Lunokhod was less – 30,10 ± 0,27% and 30.54 ± 0.40%, respectively. Yield extractives, which did not differ extracted with 40% ethanol in tuber varieties Classic and Smuglyanka and reached 32.97 ± 0.32% and 32.04 ± 0.27%, respectively, Tubers variety Lunokhod 1.16 times inferior content extractives, extracted with 40% ethanol (26,28 ± 0,32%), the above-mentioned varieties. Results obtained by extraction with 70% ethanol in Lunokhod and Smuglyanka grades differ slightly and amounted 29.53 ± 0.31% and 29.35 ± 0.31%, respectively.