Effect of acidified water on phenolic profile and antioxidant activity of dried blackcurrant (Ribes nigrum L.) pomace extracts

AbstractSince rapeseed and sunflower meals are two of the most representative oilseed crops in the world, this study was focused on ethanol-wash solutes (EWS) obtained as wastes from the protein isolation process of rapeseed and sunflower meals. These meals have been previously valorised; however, the use of the EWS is unexplored. The present study is aimed at the characterisation of their phenolic profile, and antioxidant capacity for preventing lipid oxidation in rapeseed, sunflower, and soybean oil, which has been used as a reference oil. The sunflower EWS exhibited more total phenolic compounds (TPC) and antioxidant activity (119.39 ± 1.13 mg GA/g and 193.97 ± 9.77 mg TE/g, respectively) than the rapeseed one (103.44 ± 5.94 mg GA/g and 89.51 ± 3.17 mg TE/g). The phenolic identification showed hydroxybenzoic and protocatechuic acid in the rapeseed EWS, and pyrogallol and caffeic acid in the sunflower EWS, as the main representative phenols. Both EWS at 15% increased significantly (p < 0.05) the oxidative stability of the oils in the Rancimat equipment with values of antioxidant activity index (AAI) from 1.01 to 1.20, depending on the type of oil employed. In conclusion, the rapeseed and sunflower EWS showed great potential, and they could be used as a source of natural antioxidants within the food industry, replacing the synthetic ones, and promoting the circular economy since they are agro-food wastes.

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Valorization of date palm biodiversity: physico‐chemical composition, phenolic profile, antioxidant activity, and sensory evaluation of date pastes

Journal of Food Measurement & Characterization ◽

10.1007/s11694-021-00844-7 ◽

2021 ◽

Author(s):

Malika Tassoult ◽

Djamel Edine Kati ◽

Mostapha Bachir-bey ◽

Ali Benouadah ◽

Guillermo Rodriguez-Gutiérrez

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

Sensory Evaluation ◽

Date Palm ◽

Phenolic Profile ◽

Physico Chemical

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Phenolic profile and antioxidant activity of extracts of leaves and flowers of yacon (Smallanthus sonchifolius)

Industrial Crops and Products ◽

10.1016/j.indcrop.2014.09.025 ◽

2014 ◽

Vol 62 ◽

pp. 499-506 ◽

Cited By ~ 23

Author(s):

Eriel Forville de Andrade ◽

Roberta de Souza Leone ◽

Luciana N. Ellendersen ◽

Maria Lucia Masson

Keyword(s):

Antioxidant Activity ◽

Phenolic Profile ◽

Smallanthus Sonchifolius

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HPLC Evaluation of Phenolic Profile, Nutritive Content, and Antioxidant Capacity of Extracts Obtained fromPunica granatumFruit Peel

Advances in Pharmacological Sciences ◽

10.1155/2013/296236 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 10

Author(s):

Sushil Kumar Middha ◽

Talambedu Usha ◽

Veena Pande

Keyword(s):

Antioxidant Activity ◽

Gallic Acid ◽

Antioxidant Activities ◽

Radical Scavenging Activity ◽

Radical Scavenging ◽

Water Extract ◽

Scavenging Activity ◽

Fruit Peel ◽

Phenolic Profile ◽

Antioxidant Power

This study revealed polyphenolic content, nutritive content, antioxidant activity, and phenolic profile of methanol and aqueous extracts ofPunica granatumpeel extract. For this, extracts were screened for possible antioxidant activities by free radical scavenging activity (DPPH), hydrogen peroxide scavenging activity and ferric-reducing antioxidant power (FRAP) assays. The total phenolics and flavonoid recovered by methanolic (MPE) and the water extract (AQPE) were ranged from 185 ± 12.45 to 298.00 ± 24.86 mg GAE (gallic acid equivalents)/gm and 23.05 ± 1.54 to 49.8 ± 2.14 quercetin (QE) mg/g, respectively. The EC50of herbal extracts ranged from 100 µg/ml (0.38 quercetin equivalents), for AQPE, 168 µg/ml (0.80 quercetin equivalents), for MPE. The phenolic profile in the methanolic extracts was investigated by chromatographic (HPLC) method. About 5 different flavonoids, phenolic acids, and their derivatives including quercetin (1), rutin (2), gallic acid (3), ellagic acid (4), and punicalagin as a major ellagitannin (5) have been identified. Among both extracts, methanolic extract was the most effective. This report may be the first to show nutritive content and correlation analysis to suggest that phenols and flavonoids might contribute the high antioxidant activity of this fruit peel and establish it as a valuable natural antioxidant source applicable in the health food industry.

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Individual phenolic profile and antioxidant activity of vegetative parts from cultivated or wild growing Fragaria vesca L.

Planta Medica ◽

10.1055/s-0034-1394903 ◽

2014 ◽

Vol 80 (16) ◽

Author(s):

MI Dias ◽

L Barros ◽

MBPP Oliveira ◽

C Santos-Buelga ◽

ICFR Ferreira

Keyword(s):

Antioxidant Activity ◽

Fragaria Vesca ◽

Phenolic Profile

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Influence of Reverse Osmosis Process in Different Operating Conditions on Phenolic Profile and Antioxidant Activity of Conventional and Ecological Cabernet Sauvignon Red Wine

Membranes ◽

10.3390/membranes12010076 ◽

2022 ◽

Vol 12 (1) ◽

pp. 76

Author(s):

Ivana Ivić ◽

Mirela Kopjar ◽

Ivana Buljeta ◽

Dubravko Pichler ◽

Josip Mesić ◽

...

Keyword(s):

Antioxidant Activity ◽

Reverse Osmosis ◽

Red Wine ◽

Chemical Properties ◽

Processing Parameters ◽

Negative Influence ◽

Operating Conditions ◽

Cabernet Sauvignon ◽

Phenolic Profile ◽

Wine Polyphenols

Red wine polyphenols are responsible for its colour, astringency, and bitterness. They are known as strong antioxidants that protect the human body from the harmful effects of free radicals and prevent various diseases. Wine phenolics are influenced by viticulture methods and vinification techniques, and therefore, conventionally and ecologically produced wines of the same variety do not have the same phenolic profile. Ecological viticulture avoids the use of chemical adjuvants in vineyards in order to minimise their negative influence on the environment, wine, and human health. The phenolic profile and antioxidant activity of wine can also be influenced by additional treatments, such as concentration by reverse osmosis. The aim of this study was to investigate the influence of four different pressures (2.5, 3.5, 4.5, and 5.5 MPa) and two temperature regimes (with and without cooling) on the phenolic profile and antioxidant activity of conventional and ecological Cabernet Sauvignon red wine during concentration by reverse osmosis. The results showed that retention of individual phenolic compounds depended on the applied processing parameters, chemical composition of the initial wine, and chemical properties of a compound. Higher pressure and retentate cooling favoured the retention of total polyphenols, flavonoids, and monomeric anthocyanins, compared to the opposite conditions. The same trend was observed for antioxidant activity.

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Antioxidant Activity, Phenolic Profile, and Nephroprotective Potential of Anastatica hierochuntica Ethanolic and Aqueous Extracts against CCl4-Induced Nephrotoxicity in Rats

Nutrients ◽

10.3390/nu13092973 ◽

2021 ◽

Vol 13 (9) ◽

pp. 2973

Author(s):

Tariq I. Almundarij ◽

Yousef M. Alharbi ◽

Hassan A. Abdel-Rahman ◽

Hassan Barakat

Keyword(s):

Oxidative Stress ◽

Antioxidant Activity ◽

Therapeutic Agent ◽

Kidney Tissue ◽

Kidney Injury ◽

Total Phenolic ◽

Drug Induced ◽

Total Carotenoids ◽

Phenolic Profile ◽

Better Than

Kaff-e-Maryam (Anastatica hierochuntica L.) is extensively used to treat a range of health problems, most notably to ease childbirth and alleviate reproductive system-related disorders. This study aimed to evaluate the effect of A. hierochuntica ethanolic (KEE), and aqueous (KAE) extracts on CCl4-induced oxidative stress and nephrotoxicity in rats using the biochemical markers for renal functions and antioxidant status as well as histopathological examinations of kidney tissue. A. hierochuntica contained 67.49 mg GAE g−1 of total phenolic compounds (TPC), 3.51 µg g−1 of total carotenoids (TC), and 49.78 and 17.45 mg QE g−1 of total flavonoids (TF) and total flavonols (TFL), respectively. It resulted in 128.71 µmol of TE g−1 of DPPH-RSA and 141.92 µmol of TE g−1 of ABTS-RSA. A. hierochuntica presented superior antioxidant activity by inhibiting linoleic acid radicals and chelating oxidation metals. The HPLC analysis resulted in 9 and 21 phenolic acids and 6 and 2 flavonoids in KEE and KAE with a predominance of sinapic and syringic acids, respectively. Intramuscular injection of vit. E + Se and oral administration of KEE, KAE, and KEE + KAE at 250 mg kg−1 body weight significantly restored serum creatinine, urea, K, total protein, and albumin levels. Additionally, they reduced malondialdehyde (MOD), restored reduced-glutathione (GSH), and enhanced superoxide dismutase (SOD) levels. KEE, KAE, and KEE + KAE protected the kidneys from CCl4-nephrotoxicity as they mainly attenuated induced oxidative stress. Total nephroprotection was about 83.27%, 97.62%, and 78.85% for KEE, KAE, and KEE + KAE, respectively. Both vit. E + Se and A. hierochuntica extracts attenuated the histopathological alteration in CCl4-treated rats. In conclusion, A. hierochuntica, especially KAE, has the potential capability to restore oxidative stability and improve kidney function after CCl4 acute kidney injury better than KEE. Therefore, A. hierochuntica has the potential to be a useful therapeutic agent in the treatment of drug-induced nephrotoxicity.

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