RESEARCH OF THE ANTIOXIDANT COMPLEX OF HONEYSUCKLE LONICERA CAERULEA L. IN THE SVERD-LOVSK REGION

The article presents the results of a three-year study of the antioxidant complex in the berries of 11 varieties of honeysuckle growing in the Sverdlovsk region. As a result of studies of antioxidant indicators in honeysuckle, the values of antioxidant activity ranged from 22.356±0.671 to 60.537±1.816 mmol/dm3 eq (the highest value is observed in the mid-early variety «Polyanka Kotova» with an average value of 55.622±1.660 mmol/dm3 eq; the lowest in the middle - late variety «Lazurit» with an average value of 24.412±0.732 mmol/dm3 eq). At the same time, the content of flavonoids ranged from 162.4±4.9 to 288.3±8.7 mg/100 g of edible part (the highest value is in the mid-early variety «Polyanka Kotova» with an average value of 264.9±7.9; the lowest value is observed in the early variety «Zinri» with an average value of 182.4±5.5 mg/100 g of edible part). The content of anthocyanins in honeysuckle ranges from 2072.9±62.2 – 7505.6±225.2 mg of cyanidin-3-glycoside/100 g of edible part (the highest value is in the mid-early variety «Polyanka Kotova» with an average value of 6791 .8±203.8; the lowest value is for the early variety «Zinri» with an average value of 3222.5±96.7 mg of cyanidin-3-glycoside/100 g of edible part. The content of phenolic substances in honeysuckle ranges from 378.2±11.4 – 1162.8±34.9 mg of gallic acid/100 g of edible part (the highest values are in the mid-early variety «Polyanka Kotova» with an average value of 1057.9±31.7; the smallest in the average variety «Amazon» with an average value of 521.2±15.6 mg of gallic acid/100 g of edible part. In addition, the effectiveness of freezing (T = -42 °C) and low-temperature storage (T = -18 °C) as a method of preserving the antioxidant characteristics of honeysuckle for up to 9 months has been experimentally proven: for the observation period 2021–2023. At the end of the storage period, the safety of the total antioxidant activity values is in the range of 77.7–89.8% (the highest safety is observed in the early variety «Silginka» – from 89.5 to 87.1%).