Supercritical fluid extraction of Rumex Acetosa L. roots: Yield, composition, kinetics, bioactive evaluation and comparison with conventional techniques

Santos, Ênio Rafael de Medeiros; Oliveira, Humberto Neves Maia de; Oliveira, Eliza; Azevedo, Saulo Henrique Gomes de; Jesus, Anderson Alles de; Medeiros, Aldo Miro de; Dariva, Cláudio; Sousa, Elisa Maria Bittencourt Dutra de

doi:10.1016/j.supflu.2016.11.019

Cited by 41 publications

(16 citation statements)

References 39 publications

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“…The potential of supercritical fluid solvents in extracting bioactives from seaweeds has been documented by researchers (Herrero, del Pilar Sanchez‐Camargo, Cifuentes, & Ibanez, 2015; Sivagnanam et al., 2015). Our results are in agreement with the findings of Santos et al (2017) and Herzi, Bouajila, Camy, Romdhane, and Condoret (2013) who have reported the better performance of SFE over conventional methods, while analyzing the bioactivity of Rumex acetosa L. roots. However, Sivagnanam et al (2015) has reported lower polyphenolic contents of 0.60 and 0.64 mg gallic acid equivalents/g in Saccharina japonica and S. horneri extracts obtained by using supercritical carbon dioxide and ethanol.…”

Section: Resultssupporting

confidence: 93%

Screening of effective solvents for obtaining antioxidant‐rich seaweed extracts using principal component analysis

Kumar

Paul

Anas

et al. 2020

J Food Process Preserv

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Supercritical fluid extraction (SFE) has garnered significant attention as a promising green technology for the isolation of bioactive constituents from natural sources. In the present study, an attempt has been made to investigate the comparative effectiveness of supercritical carbon dioxide and conventional food grade solvents such as water, 60%, 40%, and absolute ethanol, in extracting bioactive compounds from brown seaweeds (Sargassum wightii and Turbinaria conoides). The antioxidant potential of seaweed extracts prepared using conventional methodologies and SFE was evaluated in terms of total phenolics, antioxidant activity, etc. SFE was significantly (p < .05) effective in extracting seaweed constituents with highest total phenolic (27.56 mg gallic acid equivalents/g extract), flavonoid, and total antioxidant activity compared to conventional solvents. Observations on biplots of principal component analysis also concurred with the above research findings. The present findings highlighted that SFE can be recommended as an environmentally friendly technology for obtaining antioxidant‐rich seaweed extracts with potential bioactivity. Practical applications Seaweeds, an important marine bioresource, serve as galore repository of biologically active phytochemicals such as fucoidan, phlorotannins, alginates, carotenoids, etc. Owing to their immense bioactivities, seaweeds/extracts and seaweed‐based biomolecules are finding extensive applications in the areas of pharmaceuticals, functional food, biotechnology, etc. Conventional extraction which is the most commonly employed method for obtaining seaweed extracts has so many drawbacks. In this context, the use of a sustainable method such as SFE garners significant attention. The present work highlights the potential of SFE in obtaining extracts with high bioactivity from commercially important seaweeds, S. wightii, and T. conoides.

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Section: Resultssupporting

confidence: 93%

Screening of effective solvents for obtaining antioxidant‐rich seaweed extracts using principal component analysis

Kumar

Paul

Anas

et al. 2020

J Food Process Preserv

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“…Kalisz et al analyzed the polyphenol content of two cultivars (Victoria and Red Malinowy) in the spring and autumn seasons, recording the highest value of flavan-3-ols for Red Malinowy cultivar from spring harvest (195.98 mg•g −1 d.w.) and the lowest for Victoria cv from autumn harvest (86.57 mg•g −1 d.w.) [13]. Studies on other vegetable species belonging to the family Polygonaceae were performed on Rumex acetosa [19][20][21][22], Rumex scutatus [23], Rumex crispus [24,25], Rumex japonicus [26], Rumex hastatus [27][28][29], Rumex ecklonianus [30], Rumex tingitanus [31], Rumex sanguineus [32], Rumex acetosella [33], Rumex maderensis [34], and Rumex obtusifolius [35], but no determinations relevant to polyphenols content and composition were performed.…”

Section: Introductionmentioning

confidence: 99%

Dynamic of Phenolic Compounds, Antioxidant Activity, and Yield of Rhubarb under Chemical, Organic and Biological Fertilization

Cojocaru

Vlase

Munteanu

et al. 2020

Plants

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In recent years, rhubarb is being increasingly cultivated, as it provides early yields when the vegetables supply to market is deficient and shows high levels of both polyphenols content and antioxidant capacity in edible parts. In 2017, we investigated crops of the rhubarb cultivar Victoria to the fifth year of production. Comparisons were performed between three root phase fertilizations—chemical (NPK 16-16-16®), organic (Orgevit®), and biological (Micoseeds MB®)—plus an unfertilized control. The determinations of polyphenols, the antioxidant capacity, and the yield indicators from the stalks (petioles) of rhubarb were made at each out of the 10 harvests carried out. The highest yield (59.16 t·ha−1) was recorded under the chemical fertilization. The total polyphenols content and antioxidant capacity varied widely from 533.86 mg GAE·g−1 d.w. and 136.86 mmol Trolox·g−1 d.w., respectively in the unfertilized control at the last harvest, up to 3966.56 mg GAE·g−1 d.w. and 1953.97 mmol Trolox·g−1 d.w. respectively under the organic fertilization at the four harvest. From the results of our investigation, it can be inferred that the chemical fertilization was the most effective in terms of yield, whereas the sustainable nutritional management based on organic fertilizer supply led to higher antioxidant compounds and activity.

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“…Peels of Citrus Unshiu were subjected to supercritical carbon dioxide extraction with an ethanol co-solvent entrainer to obtain nobiletin (a polymethoxyflavone) [61]. Carob biomass (Ceratonia silique L.) was extracted by supercritical carbon dioxide assisted by ultrasound to obtain phenolic antioxidants [62], which were also obtained by this technique from Rumex acetosa L. roots [63]. Extracts of Polish blackberry (Rubus fruticosus) pomace by supercritical carbon dioxide contained omega fatty acids, phytosterols, and tocopherols, and showed antioxidant activities [64].…”

Section: Supercritical Fluid Extraction From Bio-materialsmentioning

confidence: 99%

Some Advances in Supercritical Fluid Extraction for Fuels, Bio-Materials and Purification

Marcus

2019

Processes

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Supercritical fluids are used for the extraction of desired ingredients from natural materials, but also for the removal of undesired and harmful ingredients. In this paper, the pertinent physical and chemical properties of supercritical water, methanol, ethanol, carbon dioxide, and their mixtures are provided. The methodologies used with supercritical fluid extraction are briefly dealt with. Advances in the application of supercritical extraction to fuels, the gaining of antioxidants and other useful items from biomass, the removal of undesired ingredients or contaminants, and the preparation of nanosized particles of drugs are described.

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Supercritical fluid extraction of Rumex Acetosa L. roots: Yield, composition, kinetics, bioactive evaluation and comparison with conventional techniques

Cited by 41 publications

References 39 publications

Screening of effective solvents for obtaining antioxidant‐rich seaweed extracts using principal component analysis

Screening of effective solvents for obtaining antioxidant‐rich seaweed extracts using principal component analysis

Dynamic of Phenolic Compounds, Antioxidant Activity, and Yield of Rhubarb under Chemical, Organic and Biological Fertilization

Some Advances in Supercritical Fluid Extraction for Fuels, Bio-Materials and Purification

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