A comprehensive review on polarity, partitioning, and interactions of phenolic antioxidants at oil–water interface of food emulsions

Farooq, Shahzad; Khan, Mir Azam; Zhang, Hui; Weiß, Jochen

doi:10.1111/1541-4337.12792

Cited by 69 publications

(33 citation statements)

References 196 publications

(373 reference statements)

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“… 27 In general, the polarity and rigidity of the microenvironment experienced by a compound play a crucial role in its exerted antioxidant activity. 50 − 52 The same molecules in spherical or rodlike micelles of the same composition show different antioxidant activities as a function of their different locations inside the aggregates. 53 The results that we obtained with UA can be due to the different ζ potentials of quatsomes and/or to the different locations of UA inside the aggregates.…”

Section: Resultsmentioning

confidence: 99%

Quatsomes Formulated with l-Prolinol-Derived Surfactants as Antibacterial Nanocarriers of (+)-Usnic Acid with Antioxidant Activity

Battista

Köber

Bellio

et al. 2022

ACS Appl. Nano Mater.

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The efficacy of the treatment of bacterial infection is seriously reduced because of antibiotic resistance; thus, therapeutic solutions against drug-resistant microbes are necessary. Nanoparticle-based solutions are particularly promising for meeting this challenge because they can offer intrinsic antimicrobial activity and sustained drug release at the target site. Herein, we present a newly developed nanovesicle system of the quatsome family, composed of l -prolinol-derived surfactants and cholesterol, which has noticeable antibacterial activity even on Gram-negative strains, demonstrating great potential for the treatment of bacterial infections. We optimized the vesicle stability and antibacterial activity by tuning the surfactant chain length and headgroup charge (cationic or zwitterionic) and show that these quatsomes can furthermore serve as nanocarriers of pharmaceutical actives, demonstrated here by the encapsulation of (+)-usnic acid, a natural substance with many pharmacological properties.

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Section: Resultsmentioning

confidence: 99%

Quatsomes Formulated with l-Prolinol-Derived Surfactants as Antibacterial Nanocarriers of (+)-Usnic Acid with Antioxidant Activity

Battista

Köber

Bellio

et al. 2022

ACS Appl. Nano Mater.

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“…The oxidation mechanism in W/O emulsion can be postulated as a similar mechanism in bulk oil. A trace amount of water remains in bulk oil and the water forms association colloids so that polar antioxidants can affect the oxidative stability of lipids more than nonpolar antioxidants (Farooq et al., 2021). However, in this study, methylated polyphenols in buckwheat hull extracts were more effective than phenolic acids in the W/O emulsion despite their lower polarity.…”

Section: Resultsmentioning

confidence: 99%

Phenolics in buckwheat hull extracts and their antioxidant activities on bulk oil and emulsions

Lee

Lim

Kim

et al. 2022

Journal of Food Science

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Buckwheat hulls are discarded as waste, although they have more phenolic compounds than buckwheat groats. The antioxidant activities of buckwheat hull extracts prepared with water, 50% ethanol, and 100% ethanol were investigated in bulk oil, oil-in-water (O/W), and water-in-oil (W/O) emulsions. The relationship between the phenolic compositions of the extracts and their antioxidant activities in the three different lipid systems was also evaluated. Fifty percent ethanol extract had the highest total phenolic content (327 mg gallic acid equivalent [GAE]/g extract) followed by water and 100% ethanol extracts (211 and 163 mg GAE/g extract, respectively). The total oxidation rate (k) was not significantly different among the bulk oils added with the buckwheat hull extracts. However, in the O/W emulsion, the k was more reduced by the 50% and 100% ethanol extracts than by the water extract at the concentration of 100 µg GAE/g (2.9, 2.8, and 3.7 Totox/day, respectively). The k of the W/O emulsion was more reduced by the 100% ethanol extract than by the water and 50% ethanol extract at the concentration of 100 µg GAE/g (3.8, 4.7, and 4.5 Totox/day, respectively). Multivariate statistical analysis revealed that the contents of phenolic acids and their derivatives were the highest in the water extract among the extracts, while the contents of flavonoid glycosides and methylated polyphenols were the highest in the 50% and 100% ethanol extracts, respectively. The results suggest that flavonoid glycosides and methylated polyphenols could be potential candidates for retarding the oxidation of the emulsion system. K E Y W O R D Sbuckwheat hulls, lipid antioxidation, multivariate statistical analysis Practical Application: Buckwheat hull extracts could retard lipid oxidation. Flavonoid glycosides and methylated polyphenols in buckwheat hull extracts may have an antioxidative effect on lipids. Thus, buckwheat hulls could be used as an antioxidant in lipid systems, as flavonoid glycosides and methylated polyphenols are properly extracted from buckwheat hulls.

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“…Instead, the components of the 0% SP film showed ferric reducing capacity (FRAP assay), which increased significantly ( p < 0.05) from 35 to 42.6 mg of AA per 100 g of film as the SP concentration in composites increased ( Table 4 ). Polysaccharides such as pectins retard lipid oxidation in oil-in-water emulsions due to metal ion chelation and hydrogen donation ( 46 , 47 ). The latter can explain the FRAP demonstrated by the low methoxyl pectin film with 0% SP ( Table 4 ).…”

Section: Resultsmentioning

confidence: 99%

Sunflower (Helianthus annuus L.) Seed Hull Waste: Composition, Antioxidant Activity, and Filler Performance in Pectin-Based Film Composites

et al. 2021

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Helianthus annuus L. seed hull is an abundant waste of the edible oil industry. To envisage potential applications of this waste, here, we aimed to analyze the chemical composition of milled sunflower hulls (SP), constituted mainly by 210 μm (51.4%) and 420 μm (27.6%) average mesh particle sizes. SP contained almost 30% of cellulose, 26.4% of lignin, 38.5% of neutral sugars, mainly hemicelluloses, and only 1.3% of proteins. The important lignin content and low pectin content (4.0% of uronic acids) present in SP were both ascribed to its low hydrophilic behavior and hydration capacity. Phenolic compounds were mostly proanthocyanidins (168 mg/100 g SP), with lower amounts of extractable (31.4 mg/100 g SP) phenolics (O-caffeoylquinic acid), all of them associated with the DPPH radical scavenging capacity (95 mg ascorbic acid equiv./100 g) and ferric reducing power (FRAP: 152 mg ascorbic acid equiv./100 g) shown by SP. Esterified ferulic acid (52.9 mg/100 g SP) was also found, mostly as monomers and trimers. SP of 53 μm particle size was then assayed as a filler (0, 5, 8, and 12% concentrations) in calcium low methoxyl pectin-based films, which showed antioxidant capacity (DPPH and FRAP assays) in an SP-concentration-dependent manner. SP showed homogeneous dispersion in composite films equilibrated at 57.7% relative humidity. Water content decreased while film thickness increased with SP concentration. When loaded at a 12% level, the presence of 53-μm SP decreased the water vapor permeability and increased the normal stress at film fracture. Sunflower hulls can then be applied to the development of active materials like 12% SP film, which can be proposed as a food slice antioxidant separator to be investigated in a future work.

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A comprehensive review on polarity, partitioning, and interactions of phenolic antioxidants at oil–water interface of food emulsions

Cited by 69 publications

References 196 publications

Quatsomes Formulated with l-Prolinol-Derived Surfactants as Antibacterial Nanocarriers of (+)-Usnic Acid with Antioxidant Activity

Quatsomes Formulated with l-Prolinol-Derived Surfactants as Antibacterial Nanocarriers of (+)-Usnic Acid with Antioxidant Activity

Phenolics in buckwheat hull extracts and their antioxidant activities on bulk oil and emulsions

Sunflower (Helianthus annuus L.) Seed Hull Waste: Composition, Antioxidant Activity, and Filler Performance in Pectin-Based Film Composites

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