Optimization of pressure-enhanced solid-liquid extraction of flavonoids from Flos Sophorae and evaluation of their antioxidant activity

Xi, Jun; Yan, Lianggong

doi:10.1016/j.seppur.2016.10.013

Cited by 47 publications

(23 citation statements)

References 22 publications

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“…These results could be explained by Xi and Luo [82], who found that increasing the pressure has positive effect on the solvent viscosity, diffusion and surface tension, thus increases solubility of the natural compounds, but further increase in the pressure can damage these compounds. Xi and Yan [81] had also shown that higher yield of flavonoids were recorded at higher ethanol concentration (up to 75%), and any further increase in ethanol concentration beyond 75% will decrease the flavonoids yield. This may be due to that 75% aqueous ethanol represents the most suitable polarity for flavonoids extraction and also the presence of water increases the swelling index and contact surface area of plant material with the solvent [83,84].…”

Section: Extraction Of Flavonoidsmentioning

confidence: 98%

“…Xi and Yan [81] optimized the conditions such as pressure, ethanol concentration, and solvent to solid ratio, temperature and extraction time for proper PSE extraction of flavonoids from Flos Sophorae and compared it with HRE. Yield of flavonoids was improved by increasing the pressure up to 450 MPa, after that any increase in the pressure caused a decrease in the yield of flavonoids.…”

Section: Extraction Of Flavonoidsmentioning

confidence: 99%

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A critical analysis of extraction techniques used for botanicals: Trends, priorities, industrial uses and optimization strategies

Belwal

Ezzat

Rastrelli

et al. 2018

TrAC Trends in Analytical Chemistry

365

182

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Plant extracts have been long used by the traditional healers for providing health benefits and are nowadays suitable ingredient for the production of formulated health products and nutraceuticals. Traditional methods of extraction such as maceration, percolation, digestion, and preparation of decoctions and infusions are now been replaced by advanced extraction methods for increased extraction efficiency and selectivity of bioactive compounds to meet up the increasing market demand. Advanced techniques use different ways for extraction such as microwaves, ultrasound waves, supercritical fluids, enzymes, pressurized liquids, electric field, etc. These innovative extraction techniques, afford final extracts selectively rich in compounds of interest without formation of artifacts, and are often simple, fast, environmentally friendly and fully automated compared to existing extraction method. The present review is focused on the recent trends on the extraction of different bioactive chemical constituents depending on the nature of sample matrices and their chemical classes including anthocyanins, flavonoids, polyphenols, alkaloids, oils, etc. In addition, we review the strategies for designing extraction, selection of most suitable extraction methods, and trends of extraction methods for botanicals. Recent progress on the research based on these advanced methods of extractions and their industrial importance are also discussed in detail.

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Section: Extraction Of Flavonoidsmentioning

confidence: 98%

Section: Extraction Of Flavonoidsmentioning

confidence: 99%

A critical analysis of extraction techniques used for botanicals: Trends, priorities, industrial uses and optimization strategies

Belwal

Ezzat

Rastrelli

et al. 2018

TrAC Trends in Analytical Chemistry

365

182

View full text Add to dashboard Cite

show abstract

“…The flavonoid content was measured by a colorimetric method (ESI, Fig. S2), which is based on the formation of a flavonoid-aluminum complex with maximum absorption at 415 nm [31]. 1 mL of standard or extract was added to 1 mL of AlCl 3 .6H 2 O solution.…”

Section: Measurement Of Total Flavonoid Compoundsmentioning

confidence: 99%

Phytochemical properties and antioxidant activity of Echinops persicus plant extract: green synthesis of carbon quantum dots from the plant extract

et al. 2020

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Echinops persicus is a species of Echinops that can be found in Europe and western Asia especially in Iran. In this paper, the phytochemical properties of Echinops persicus were thoroughly investigated and studied. In this way, total amounts of flavonoid, tannins, phenols, carotenoids, saponins, alkaloids, and anthocyanin were measured by various analytical methods. The major phenolic and flavonoid content was found in the root acetone and flower ethanolic extract of the plant. Also, major saponins and carotenoid contents was found in root and leaf of the plant. These measurements were also performed for root, leaf, and flower of the plant in various solvent extracts. The results indicated that Echinops persicus is a rich source of secondary metabolites. Also, the plant extract demonstrated a considerable antiradical activity, which evaluated qualitatively as well as quantitatively. The largest capacity to neutralize DPPH radicals was found for root water extract of Echinops persicus plant. Finally, the possibility of the plant extract was evaluated for the green preparation of carbon quantum dots (CQDs). As-prepared CQDs were characterized by TEM, HRTEM, UV-Vis, XRD, and EDX analyses.

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“…A similar outcome was reported by using HP to obtain flavonoids from white buds of Flos Sophorae. 129 The extraction was optimized using a response surface methodology where pressure, percentage of ethanol in the solvent and the liquid/solid ratio were selected as the main variables. According to the authors, the most efficient extracting conditions were 460 MPa, 75% ethanol solution and a liquid to solid ratio of 32 mL g −1 , which yielded 203 mg flavonoids per g.…”

Section: Application Of Hp In Sustainable Extractionmentioning

confidence: 99%

A review of sustainable and intensified techniques for extraction of food and natural products

et al. 2020

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show abstract

Optimization of pressure-enhanced solid-liquid extraction of flavonoids from Flos Sophorae and evaluation of their antioxidant activity

Cited by 47 publications

References 22 publications

A critical analysis of extraction techniques used for botanicals: Trends, priorities, industrial uses and optimization strategies

A critical analysis of extraction techniques used for botanicals: Trends, priorities, industrial uses and optimization strategies

Phytochemical properties and antioxidant activity of Echinops persicus plant extract: green synthesis of carbon quantum dots from the plant extract

A review of sustainable and intensified techniques for extraction of food and natural products

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