Gamma-irradiation induced changes in microbiological status, phenolic profile and antioxidant activity of peanut skin

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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Green synthesized silver and copper nanoparticles induced changes in biomass parameters, secondary metabolites production, and antioxidant activity in callus cultures of Artemisia absinthium L.

Green Processing and Synthesis ◽

10.1515/gps-2021-0010 ◽

2021 ◽

Vol 10 (1) ◽

pp. 61-72

Author(s):

Khizar Hayat ◽

Shahid Ali ◽

Saif Ullah ◽

Yujie Fu ◽

Mubashir Hussain

Keyword(s):

Antioxidant Activity ◽

Copper Nanoparticles ◽

Biomass Accumulation ◽

Callus Cultures ◽

Total Phenolic ◽

Ag Nps ◽

Artemisia Absinthium ◽

Culture Production ◽

Metabolites Production ◽

Induced Changes

Abstract Artemisia absinthium L. is a highly medicinal plant with a broad range of biomedical applications. A. absinthium callus cultures were established in response to bio-fabricated single NPs (Ag and Cu) or a combination of both NPs (Ag and Cu) in different ratios (1:2, 2:1, 1:3, and 3:1) along with thidiazuron (TDZ) (4 mg/L) to elicit the biomass accumulation, production of non-enzymatic compounds, antioxidative enzymes, and antioxidant activity. Silver and copper nanoparticles (Ag and Cu NPs) were synthesized using the leaves of Moringa oleifera as reducing and capping agent and further characterized through UV-Visible spectroscopy and SEM. The 30 µg/L suspension of Ag and Cu NPs (1:2, 2:1) and 4 mg/L TDZ showed 100% biomass accumulation as compared to control (86%). TDZ in combination with Ag NPs enhanced biomass in the log phases of growth kinetics. The Cu NPs alone enhanced the superoxide dismutase activity (0.56 nM/min/mg FW) and peroxidase activity (0.31 nM/min/mg FW) in callus cultures. However, the combination of Ag and Cu NPs with TDZ induced significant total phenolic (7.31 µg/g DW) and flavonoid contents (9.27 µg/g DW). Furthermore, the antioxidant activity was highest (86%) in the Ag and Cu NPs (3:1) augmented media. The present study provides the first evidence of bio-fabricated single NPs (Ag and Cu) or a combination of both NPs (Ag and Cu) in different ratios (1:2, 2:1, 1:3, and 3:1) along with TDZ (4 mg/L) on the development of callus culture, production of endogenous enzymes, non-enzymatic components, and further antioxidant activity in callus cultures of A. absinthium.

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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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