Extraction of Phenolic Compounds with Antioxidant Activity from Beetroot (Beta vulgaris L.)

Guiné, Raquel; Gonçalves, Fernando; Lerat, Clémence; Idrissi, Theo El; Rodrigo, Eva; Correia, Paula; Gonçalves, Juliana

doi:10.2174/1573401313666170609102336

Cited by 27 publications

(16 citation statements)

References 15 publications

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“…Of the two organic solvents, acetone provided a higher recovery of phenolic compounds over the entire solvent composition range. Similar results were obtained in other studies on BSG [17,18] or different plant materials, such as spent coffee grounds [22], artichoke waste [31], mango by-products [32] and beetroot [33].…”

Section: Discussionsupporting

confidence: 90%

Water–Organic Solvent Extraction of Phenolic Antioxidants from Brewers’ Spent Grain

2019

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Brewers’ spent grain (BSG) is the most abundant by-product of the brewing process. BSG is currently disposed of or used as a supplement for animal feed, although it contains significant amounts of bioactive compounds of great interest to the pharmaceutical, cosmetic and food sectors. In this study we investigate the feasibility of using a simple solvent extraction procedure to recover phenolic antioxidants from BSG. Acetone–water and ethanol–water mixtures were used as extraction solvents. Phenolic extracts obtained by treatment of BSG with the two solvent systems were characterized in terms of total phenolics and antioxidant activity. For both systems, the extraction yield was maximum at 60% (v/v) organic solvent concentration. At all solvent compositions, mixtures containing acetone provided higher extraction yields. As suggested by the strong correlation between the antioxidant activity of BSG extracts and their phenolic content, the antioxidant capacity of the extracts can be mainly attributed to polyphenols. Overall, the obtained results strongly support the exploitation of BSG as a source of phenolic antioxidants and the possibility of recovering them by a mild and green extraction process.

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Section: Discussionsupporting

confidence: 90%

Water–Organic Solvent Extraction of Phenolic Antioxidants from Brewers’ Spent Grain

2019

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“…Several evidences suggest that these health benefits are related to the presence of phytochemicals, such as phenolic compounds (Ferreira et al, 2017). Phenolic compounds are secondary metabolites present in plants with an important role in the sensory and nutritional quality of fruits, vegetables and other plants (Guiné et al, 2015a(Guiné et al, , 2018cZhang et al, 2019a). They have also been identified as the major antioxidants in fruits (Zhang et al, 2019b).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of phenolic and antioxidant properties of strawberry as a function of extraction conditions

Guiné

Correia

Ferrão

et al. 2020

Braz. J. Food Technol.

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We studied the extraction of antioxidant phenolic compounds, anthocyanins and the evaluation of antioxidant activity of strawberries in different extraction conditions, varying the type of solvent (ethanol:water (50%) and acetone:water (60%), the extraction time (15 and 60 min) and the solvent volume to sample mass ratio (5 mL/g and 20 mL/g). In addition, we performed principal component analysis and cluster analysis. The results showed that, although the two solvents tested had similar influence on total phenolic compounds extraction and antioxidant activity, the 60 minutes of extraction and the use of the solvent volume/sample mass ratio of 20 mL/g were the best extraction conditions, both for the 1st and 2nd recovered extracts. However, the solvent had a marked effect on anthocyanins’ extraction, so that acetone/water extracted almost the double as compared to ethanol/water, for the same extraction conditions. Finally, factor analysis allowed identifying a grouping structure of two components, which was confirmed by the dendogram obtained from cluster analysis.

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“…In addition, bioactive substances abundant in beetroot have great importance for cardiovascular diseases by lowering the level of homocysteine (Mirmiran et al, 2020). The most important bioactive substances in beetroot are mainly polyphenols and water-soluble betalains (Chhikara et al, 2019), which are responsible for the high antioxidant effect and radical scavenging capacity of beetroot (Guiné et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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

Šlosár

Kopta

Hegedűs

et al. 2020

Folia Horticulturae

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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.

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Extraction of Phenolic Compounds with Antioxidant Activity from Beetroot (Beta vulgaris L.)

Cited by 27 publications

References 15 publications

Water–Organic Solvent Extraction of Phenolic Antioxidants from Brewers’ Spent Grain

Water–Organic Solvent Extraction of Phenolic Antioxidants from Brewers’ Spent Grain

Evaluation of phenolic and antioxidant properties of strawberry as a function of extraction conditions

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

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