## 3 Results
### Basic Chemical Composition
 \\ \hline May 2018 & Redcurrant leaves & \(33.26\pm 0.21\)\({}^{\text{\text{\textdegree}}}\) & \(15.23\pm 0.30\)\({}^{\text{\text{\textdegree}}}\) & \(4.00\pm 0.08\)\({}^{\text{\text{\textdegree}}}\) & \(7.69\pm 0.04\)\({}^{\text{\text{\textdegree}}}\) & \(73.08\pm 0.18\)\({}^{\text{\text{\textdegree}}}\) \\  & Whitecurrant leaves & \(32.91\pm 0.41\)\({}^{\text{\text{\textdegree}}}\) & \(21.42\pm 0.34\)\({}^{\text{\text{\textdegree}}}\) & \(4.03\pm 0.04\)\({}^{\text{\textdegree}}\) & \(8.44\pm 0.11\)\({}^{\text{\textdegree}}\) & \(66.11\pm 0.19\)\({}^{\text{\textdegree}}\) \\  & Blackcurrant leaves & \(32.60\pm 0.06\)\({}^{\text{\textdegree}}\) & \(15.41\pm 0.29\)\({}^{\text{\textdegree}}\) & \(7.75\pm 0.01\)\({}^{\text{\textdegree}}\) & \(11.95\pm 0.03\)\({}^{\text{\textdegree}}\) & \(64.94\pm 0.32\)\({}^{\text{\textdegree}}\) \\ \hline June/July 2018 & Redcurrant leaves & \(38.37\pm 0.23\)\({}^{\text{\text{\textdegree}}}\) & \(14.95\pm 0.11\)\({}^{\text{\text{\textdegree}}}\) & \(6.85\pm 0.11\)\({}^{\text{\textdegree}}\) & \(11.75\pm 0.02\)\({}^{\text{\textdegree}}\) & \(66.44\pm 0.02\)\({}^{\text{\textdegree}}\) \\  & Whitecurrant leaves & \(33.87\pm 0.09\)\({}^{\text{\textdegree}}\) & \(16.88\pm 0.06\)\({}^{\text{\textdegree}}\) & \(4.03\pm 0.05\)\({}^{\text{\textdegree}}\) & \(13.94\pm 0.04\)\({}^{\text{\textdegree}}\) & \(65.45\pm 0.03\)\({}^{\text{\textdegree}}\) \\  & Blackcurrant leaves & \(36.37\pm 0.14\)\({}^{\text{\textdegree}}\) & \(15.51\pm 0.06\)\({}^{\text{\textdegree}}\) & \(6.91\pm 0.05\)\({}^{\text{\textdegree}}\) & \(13.78\pm 0.02\)\({}^{\text{\textdegree}}\) & \(63.80\pm 0.01\)\({}^{\text{\textdegree}}\) \\ \hline August 2018 & Redcurrant leaves & \(41.38\pm 0.07\)\({}^{\text{\text{\textdegree}}}\) & \(14.79\pm 0.18\)\({}^{\text{\textdegree}}\) & \(6.10\pm 0.02\)\({}^{\text{\textdegree}}\) & \(11.09\pm 0.10\)\({}^{\text{\textdegree}}\) & \(68.03\pm 0.27\)\({}^{\text{\textdegree}}\) \\  & Whitecurrant leaves & \(34.54\pm 0.12\)\({}^{\text{\textdegree}}\) & \(16.29\pm 0.12\)\({}^{\text{\textdegree}}\) & \(3.65\pm 0.11\)\({}^{\text{\textdegree}}\) & \(16.74\pm 0.04\)\({}^{\text{\textdegree}}\) & \(63.32\pm 0.27\)\({}^{\text{\textdegree}}\) \\  & Blackcurrant leaves & \(30.56\pm 0.16\)\({}^{\text{\textdegree}}\) & \(19.50\pm 0.32\)\({}^{\text{\textdegree}}\) & \(2.45\pm 0.00\)\({}^{\text{\textdegree}}\) & \(11.89\pm 0.37\)\({}^{\text{\textdegree}}\) & \(66.16\pm 0.05\)\({}^{\text{\textdegree}}\) \\ \hline May 2019 & Redcurrant leaves & \(28.99\pm 0.70\)\({}^{\text{\textdegree}}\) & \(17.90\pm 0.25\)\({}^{\text{\textdegree}}\) & \(1.91\pm 0.10\)\({}^{\text{\textdegree}}\) & \(10.74\pm 0.32\)\({}^{\text{\textdegree}}\) & \(69.45\pm 0.17\)\({}^{\text{\textdegree}}\) \\  & Whitecurrant leaves & \(28.04\pm 1.14\)\({}^{\text{\textdegree}}\) & \(20.02\pm 0.04\)\({}^{\text{\textdegree}}\) & \(1.70\pm 0.01\)\({}^leaves of the blackcurrant from August 2019. The total carbohydrate concentration in the dry leaves significantly decreased in almost each harvested sample in both years. The exception was the redcurrant leaves collected in 2018. It was shown that the leaves of the redcurrant contain the significantly highest total carbohydrate content among all cultivars tested in each harvest. The largest amount of this component in the dry matter of leaves was contained in the redcurrant leaves from May 2018, and the smallest in the whitecurrant leaves collected in August 2018 and 2019.