The effects of solvents on the phenolic contents and antioxidant activity of Stypocaulon scoparium algae extracts

López, Aroa; Rico, Milagros; Rivero, Argimiro; Tangil, Miguel Suárez de

doi:10.1016/j.foodchem.2010.09.101

Cited by 171 publications

(117 citation statements)

References 34 publications

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“…The differences in TPC, TFC, and TAOC values may be attributed to the use of different solvents for extraction. It has been described in several studies that higher levels of phenolics may be associated with the use of more polar solvents for extraction [29]. Flavonoids and polyphenols are produced as natural secondary metabolites and possess rich antioxidant properties.…”

Section: Resultsmentioning

confidence: 99%

Investigating the Ameliorative Potential of the Aloe barbadensis Aqueous Fraction on Oxidative Stress Markers and Biochemical Parameters in Cadmium-Intoxicated Rabbits

Hussain

Chaudhry

Anjum

et al. 2016

Pol. J. Environ. Stud.

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This study was conducted to evaluate the possible protective effects of the flavonoid-rich fraction of Aloe barbadensis leaf skin on cadmium (Cd)-induced toxicity in male albino rabbits. Cadmium is a notable environmental pollutant due to its wider range of toxic manifestations. The aqueous fraction of aloe extract (AAF) showed higher phenolics, flavonoids, and antioxidant capacity among other fractions, suggesting its rationale use in this study. Twenty-four rabbits were randomly divided into four groups, including the control group (receiving only vehicle), the Cd group (receiving Cd, 5.1 mg/kg/day), the AAF groups (receiving AAF, 200 mg/Kg/day), and the Cd+AAF group (receiving the same concentrations as the Cd and AAF groups). Oral treatment over a period of 40 days significantly increased (p<0.05) biochemical marker enzymes, including transaminases (AST, ALT), alkaline phosphatase, γ-glutamyl transferase, creatinine, and urea, while total bilirubin (Tb) and albumin were decreased on days 10, 20, 30, and 40 in the Cd group as compared to control. A significant decrease (p<0.05) in enzyme levels and increases in Tb and albumin for Cd+AAF were observed as compared to Cd-treated rabbits. Contents of superoxide dismutase, catalase, and vitamins C and E in liver and kidney tissues were significantly increased (p<0.05), while cadmium content was significantly decreased (p<0.05) for Cd+AAF rabbits as compared to Cd-intoxicated rabbits. Values of all the parameters in only the AAF group were near to control. The histopathological studies for liver and kidney have also supported the Cd+AAF group markedly reducing the toxicity of Cd in both tissues to near normal. Thus, the results suggest that the flavonoid-rich fraction of AAF may

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Section: Resultsmentioning

confidence: 99%

Investigating the Ameliorative Potential of the Aloe barbadensis Aqueous Fraction on Oxidative Stress Markers and Biochemical Parameters in Cadmium-Intoxicated Rabbits

Hussain

Chaudhry

Anjum

et al. 2016

Pol. J. Environ. Stud.

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“…Simple phenolics (gallic, syringic, protocatechuic, and chlorogenic acids) and the flavonoids (+) catechin and (−) epicatechin were observed in methanolic Euglena cantabrica extracts (Jerez-Martel et al, 2017). Gallic acid, catechin and epicatechin were found as the predominant polyphenols of aqueous extracts from brown algae (Stypocaulon scoparium) (López et al, 2011). López et al (2011) noted that solvent polarity did not change the total amounts of Figure 2.…”

Section: Identification and Quantification Of Phenolic Compounds In E60mentioning

confidence: 95%

“…Gallic acid, catechin and epicatechin were found as the predominant polyphenols of aqueous extracts from brown algae (Stypocaulon scoparium) (López et al, 2011). López et al (2011) noted that solvent polarity did not change the total amounts of Figure 2. Antioxidant activities of different extracts from Northern freshwater macroalgae prepared using various extraction medium as determined using DPPH radical scavenging activity (A), ABTS radical scavenging activity (B), ferric reducing antioxidant power (FRAP) (C) and metal chelating activity (D).…”

Section: Identification and Quantification Of Phenolic Compounds In E60mentioning

confidence: 96%

“…The interaction of phenolic compounds with DPPH depended on the number of available hydroxyl groups and structural features such as O-H bond dissociation energy, resonance delocalizaion of the antioxidant and steric hindrance from bulky groups (Klompong & Benjakul, 2015). López et al (2011) also reported that the extracting medium significantly affected TPC and antioxidant activities of several extracts from algae (Stypocaulon scoparium). Polarity of the extraction media determined their ability to extract different groups of antioxidant compounds (Zhou & Yu, 2004).…”

Section: Dpph and Scavenging Activitymentioning

confidence: 97%

“…Variation in the yields of different extracts was probably attributed to the polarities of different compounds in the algae. Additionally, the yield of algae extracts also depends on pH, extraction time and temperature as well as on the chemical compositions of the algae (López, Rico, Rivero, & Suárez de Tangil, 2011).…”

Section: Yield and Total Phenolic Contentmentioning

confidence: 99%

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Yarnpakdee¹,

Benjakul²,

Senphan³

2019

Turk. J. Fish. Aquat. Sci.

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Characteristic and antioxidant activity of the extracts from freshwater macroalgae (C. glomerata) as influenced by extraction media, i.e., water or ethanol (20-100%, v/v) were studied. The highest yield (28.0%) was obtained when water was used. Ethanolic extracts had significantly lower yields (2.98-15.5%) (P<0.05). However, total phenolic and chlorophyll contents were lower in water extract. Among all extracts, the 60% ethanolic extract (E60) had the highest antioxidant activities, including DPPH and ABTS radical scavenging activities, ferric reducing antioxidant power and metal chelating activity. Based on LC/MS of E60, quercetin, isoquercetin and hydroquinin were the major phenolic compounds. When E60 at different levels (100, 200 and 400 mg/kg) were added to eastern little tuna (Euthynnus affinis) slices, the reduction in lipid oxidation was dose-dependent (P<0.05) as shown by smaller increases in peroxide and thiobarbituric acid-reactive substances (TBARS) values, compared to the control. Therefore, C. glomerata could be a source of alternative natural antioxidant in lipid based muscle food.

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