Antioxidant Properties of Astaxanthin in Oil‐in‐Water Emulsions with Differently‐Charged Emulsifiers Under Chlorophyll Photosensitization

Yi, BoRa; Kim, Mi‐Ja; Lee, JaeHwan

doi:10.1111/1750-3841.14005

Cited by 10 publications

(3 citation statements)

References 34 publications

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“…It has been reported that for testing antioxidant activity/capacity of natural compounds in the targeted samples, multi in vitro antioxidant test models that measure the electron or hydrogen atom transfer from antioxidant compounds to free radicals (reactive oxygen or reactive nitrogen species), must be used [ 66 , 67 , 68 ]. Moreover, quantification of total phenolic, total flavonoid by colorimetric methods, and determination of antioxidant activity using in vitro antioxidant assays are very useful approaches to evaluate the health beneficial potential, and for the quality control of food materials, and natural products [ 69 , 70 , 71 ]. Therefore, in the present study, free radicals’ inhibition or antioxidant potential in the bulbs and leaves of nine varieties of onion, planted at three diverse locations was evaluated using various assays viz.…”

Section: Resultsmentioning

confidence: 99%

Variations in Total Phenolic, Total Flavonoid Contents, and Free Radicals’ Scavenging Potential of Onion Varieties Planted under Diverse Environmental Conditions

Bibi

Shah

Khan³

et al. 2022

Plants

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Genetic diversity and Agro-climatic conditions contribute significantly to the agronomic and morphological features of the food plant species, and their nutraceutical potential. The present study was intended to evaluate the impact of growing conditions on total phenolic and total flavonoid contents, and in vitro antioxidant potential in the bulbs and leaves of onion varieties planted under diverse environmental conditions. Standard analytical methods were used to quantify total phenolic content (TPC), total flavonoid content (TFC), and free radicals’ scavenging/antioxidant capacity. The impact of climatic and soil conditions was assessed using statistical tools. In general, onion varieties cultivated at three different locations viz. Kalar Kahar, Lahore and Swabi exhibited significant variations in TPC and TFC, and antioxidant activities. The bulbs and leaves of Mustang (V1) variety planted at Lahore and Swabi had significantly (p < 0.05), high levels of TPC (659.5 ± 6.59, and 631.1 ± 8.58 mg GAE/100 g, respectively). However, leaves of Red Orb (V2) and bulbs of Mustang (V1), and Golden Orb (V6), harvested from Kalar Kahar depicted the highest concentration of TFC (432.5 ± 10.3, 303.0 ± 6.67, and 303.0 ± 2.52 mg QE/100 g DW, respectively). Likewise, bulbs of V1 planted at Kalar Kahar, Lahore and Swabi exhibited maximum inhibition of DPPH, ABTS, and H2O2 radicals (79.01 ± 1.49, 65.38 ± 0.99, and 59.76 ± 0.90%, respectively). Golden Orb (V6) harvested from Lahore had the highest scavenging of OH radical (67.40 ± 0.09%). Likewise, bulbs of V1 variety planted at KalarKahar and Swabi had significant capacity to scavenge ferric ions (415.1 ± 10.6 mg GAE/100 g DW), and molybdate ions (213.7 ± 0.00 mg AAE/100 g DW). Conversely, leaves of Amazon (V8), planted at Lahore and Swabi depicted significant levels of DPPH, ABTS, H2O2 radical scavenging (90.69 ± 0.26, 63.55 ± 1.06, 51.86 ± 0.43%, respectively), and reduction of ferric ions (184.2 ± 6.75 mg GAE/100 g DW). V6 leaves harvested from Lahore and that of Super Sarhad (V3) from Swabi showed the highest inhibition of OH radical (61.21 ± 0.79%), and molybdate ions (623.6 ± 0.12 mg AAE/100 g DW), respectively. Pearson correlation and principal component analysis revealed strong relationships of climatic conditions, soil properties and elevation with TPC, TFC and free radicals’ scavenging potential in the bulbs and leaves of onion varieties. The variations in the total phenolic and flavonoid contents, and antioxidant potential of different varieties, and their associations with climatic and soil factors revealed the complexity of the growing conditions and genetic makeup that imposed significant impacts on the synthesis of secondary metabolites and nutraceutical potential of food and medicinal plant species.

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Section: Resultsmentioning

confidence: 99%

Variations in Total Phenolic, Total Flavonoid Contents, and Free Radicals’ Scavenging Potential of Onion Varieties Planted under Diverse Environmental Conditions

Bibi

Shah

Khan³

et al. 2022

Plants

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“…In the area of active packaging, radical scavenging assays can contribute to assessing efficiency of antioxidant packaging formulations [169]. The in vitro methodologies for antioxidant and TPC assays are applied in routine quality control programs by food companies in many countries [170,171]. The methodologies for antioxidant and TPC assays can be considered valuable high-throughput, low cost tools used to evaluate and find antioxidant sources and for quality control of foods and natural products.…”

Section: Author Detailsmentioning

confidence: 99%

Recent Advances in Antioxidant Capacity Assays

Danet¹

2021

Antioxidants - Benefits, Sources, Mechanisms of Action

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This work presents a survey of the important antioxidant capacity/activity assays applied for a diversity of samples including plant extracts, foods, biological material, etc. The published materials are critically discussed, emphasizing the recent findings in the field. New and emergent antioxidant capacity assays, such as nanoparticles-based assay, are also presented. The discussion includes chemical-based methods as well as biochemical and cellular assays. Chemical methods detailed are radical/ROS-based scavenging assays (the trolox equivalent antioxidant capacity (TEAC/ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), oxygen radical absorbance capacity (ORAC) assays, chemiluminescence methods, total radical-trapping antioxidant parameter (TRAP), total oxy radical scavenging capacity (TOSC), and β-carotene bleaching assays), non-radical redox potential-based assays (ferric reducing antioxidant power (FRAP), cupric reducing antioxidant capacity (CUPRAC), nanoparticle-based methods and electrochemical methods), metal chelation capacity and total phenolic content tests. The biochemical-based assays and in vivo assays discussed include the oxidation of low density lipoprotein (LDL), the thiobarbituric acid reactive substances (TBARS) and the cellular antioxidant activity (CAA) assays. While a direct link between the antioxidant capacity and health benefits is still a matter of debate, the antioxidant testing methodologies presented in this chapter remain valuable for the high efficiency and cost-effective evaluation of antioxidants, from compound discovery to quality control.

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“…FUC is present in brown seaweeds belonging among others to the genera Dictyota, Ecklonia, Fucus, Hijikia, Laminaria, Petalonia, Sargassum, Scytosiphon, Sphaerotrichia, and Undaria [7][8][9][10][11][12]. Many studies showed that AST and FUC have antioxidant [12][13][14][15][16], antiinflammatory [14,[17][18][19][20], and anticancer [21][22][23][24][25] activities. It was also demonstrated that these phycochemical constituents have anti-diabetic [26,27], anti-obesity [28][29][30], and neuroprotective effects [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

What Do We Know about Antimicrobial Activity of Astaxanthin and Fucoxanthin?

Karpiński

Ożarowski

Alam³

et al. 2021

Marine Drugs

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Astaxanthin (AST) and fucoxanthin (FUC) are natural xanthophylls, having multidirectional activity, including antioxidant, anti-inflammatory, and anticancer. Both compounds also show antimicrobial activity, which is presented in this review article. There are few papers that have presented the antimicrobial activity of AST. Obtained antimicrobial concentrations of AST (200–4000 µg/mL) are much higher than recommended by the European Food Safety Authority for consumption (2 mg daily). Therefore, we suggest that AST is unlikely to be of use in the clinical treatment of infections. Our knowledge about the antimicrobial activity of FUC is better and this compound acts against many bacteria already in low concentrations 10–250 µg/mL. Toxicological studies on animals present the safety of FUC application in doses 200 mg/kg body weight and higher. Taking available research into consideration, a clinical application of FUC as the antimicrobial substance is real and can be successful. However, this aspect requires further investigation. In this review, we also present potential mechanisms of antibacterial activity of carotenoids, to which AST and FUC belong.

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Antioxidant Properties of Astaxanthin in Oil‐in‐Water Emulsions with Differently‐Charged Emulsifiers Under Chlorophyll Photosensitization

Cited by 10 publications

References 34 publications

Variations in Total Phenolic, Total Flavonoid Contents, and Free Radicals’ Scavenging Potential of Onion Varieties Planted under Diverse Environmental Conditions

Variations in Total Phenolic, Total Flavonoid Contents, and Free Radicals’ Scavenging Potential of Onion Varieties Planted under Diverse Environmental Conditions

Recent Advances in Antioxidant Capacity Assays

What Do We Know about Antimicrobial Activity of Astaxanthin and Fucoxanthin?

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