Published in Scientific Papers. Series B, Horticulture, Vol. LXVIII, Issue 2
Written by Daniela BĂLAN, Gabriela LUȚĂ, Maria STANCA, Ovidiu JERCA, Ștefana JURCOANE, Carmen GAIDĂU, Mihaela NICULESCU, Aykut SANCAKLI, Aysegul UZUNER DEMİR
One of the most widely grown and consumed vegetable, tomato (Lycopersicon esculentum Mill.) is valuable both for their rich taste and for their nutritional value and antioxidant properties. Vitamin C, carotenoids (lycopene, β-carotene) and polyphenols are the main bioactive compounds present in tomato, their regular consumption being correlated with a low risk of various cancers and some cardiovascular diseases. Biostimulants products represent nowadays a sustainable alternative to the chemical fertilizers used for improving crop yields and quality. A product obtained from fish gelatin and collagen hydrolysate was physicochemically characterized and used for foliar application on tomato crop in the fruiting stage. The objective of this study was to assess the effect of the biostimulant treatment on antioxidant activity of tomatoes. The tomatoes were analyzed regarding carotenoids, ascorbic acid, phenolic compounds content and antioxidant activity. The treated tomatoes presented higher content by 26.64% for lycopene, by 12.8% for ascorbic acid and by 17.25% for total phenolics. These positive effects can be attributed to the supplementary amino acids amount provided by the biostimulator product.
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