Yield parameters, antioxidant activity, polyphenol and total soluble solids content of beetroot cultivars with different flesh colours

Abstract

This study aimed to evaluate yield parameters, antioxidant activity (AOA), total polyphenol content (TPC) and total soluble solids (TSS) in beetroot cultivars with different flesh colours. Field experiments were established at the Slovak University of Agriculture in Nitra in 2016 and 2017. Within the study, 16 beetroot cultivars were tested, including 11 red-fleshed (‘Boltardy’, ‘Boro’ F1, ‘Crosby Egyptian’, ‘Cylindra’, ‘Detroit Globe’, ‘Detroit 2’, ‘Egyptian Turnip Rooted’, ‘Opolski’, ‘Pablo’ F1, ‘Renova’ and ‘Taunus’ F1), 2 yellow-fleshed (‘Boldor’ F1 and ‘Golden’), 2 white-flesh cultivars (‘Albino’ and ‘White Detroit’) and 1 red-white fleshed cultivar (‘Chioggia’). All beetroot cultivars with red flesh colour showed higher AOA and TPC than different-coloured beetroot cultivars. The highest root yield was found in the white-fleshed beetroot cultivar ‘Albino’ (37.80–41.91 t · ha−1). The highest root weight was found in the white-fleshed beetroot cultivar ‘White Detroit’ (362.4–412.1 g). The highest AOA (819.19–972.50 mg TEAC · kg−1 d.w.) and TPC (2,387.70–2,731.00 mg · kg−1 d.w.) were found in the red-fleshed beetroot cultivar ‘Pablo’ F1. Different-coloured cultivars of beetroot were characterised by a lower content of TSS (6.4–8.8 ºBRIX) than cultivars with typical, red flesh colour (7.8–10.8 ºBRIX). Results clearly indicate that cultivar, or flesh colour, is showed as a significant factor influencing the quality of beetroot. Knowing of yield potential and quality of beetroot cultivars is important for growers as well as consumers. Results of this study indicate that white-fleshed cultivars of beetroot are characterised by high yield potential but lower quality, including lower AOA, TPC and TSS.

Measurement of microstructural changes promoted by ultrasound application on plant materials with different porosity

“…Apples are rich in sucrose and fructose [36] , and beetroot is known as a source of sucrose [40] . Generally, the values of pH and total soluble solids are similar to those previously reported in the literature for the three products [41] , [42] , [43] , [44] , [45] , [46] . Among the solvents, distilled water and citric acid presented the lowest viscosity and densities.…”

Quality Research of the Beetroots (Beta vulgaris L., ssp. vulgaris var. conditiva Alef.) Grown in Different Farming Systems Applying Chemical and Holistic Research Methods

“…During the growing, it is recommended to fertilize the beets through the leaves; additionally, no additional fertilization was used in our study. The results obtained by researchers confirmed the statistically significant effect of the cultivar on the yield of beetroots [39]. The beetroots yield can be affected by the different growing systems, irrigation and soil salinity, fertilization strategy, or meteorological conditions during the vegetation period [39].…”

“…The results obtained by researchers confirmed the statistically significant effect of the cultivar on the yield of beetroots [39]. The beetroots yield can be affected by the different growing systems, irrigation and soil salinity, fertilization strategy, or meteorological conditions during the vegetation period [39]. The yield of beetroot may vary from 19.86-25.70 [40] or 20.74-41.91 [39] to 54.80-69.43 t ha −1 [24].…”

“…The beetroots yield can be affected by the different growing systems, irrigation and soil salinity, fertilization strategy, or meteorological conditions during the vegetation period [39]. The yield of beetroot may vary from 19.86-25.70 [40] or 20.74-41.91 [39] to 54.80-69.43 t ha −1 [24]. Szopi ńska and Gawęda stated that when analyzing the total yield from the three years of cultivation, no significant influence of the cultivation method on the yield was noted, but the obtained results showed a strong impact of weather conditions during the vegetation period on the beetroots yield [40].…”

Evaluation of Proximate Composition, Mineral Elements and Bioactive Compounds in Skin and Flesh of Beetroot Grown in Lithuania

“…The 'Kosak' flesh had the highest amounts of this component (9.90 • Brix) among genotypes. According to the literature, the amounts of dry matter and TSS for the whole beetroot varied widely from 11.0-18.1% [28] and from 6.40-10.8 • Brix [29], respectively. The amounts of fiber, protein, ash, and total sugars can be affected by various factors.…”