Study of the Influence of Some Compounds on the Prediction Equations of Total Phenolic Content and Antioxidant Capacity by Colorimetric Parameters

Rigolon, Thaís Caroline Buttow; Barros, Frederico Augusto Ribeiro de; Silva, Luís Henrique Mendes da; Stringheta, Paulo César

doi:10.1007/s12161-022-02262-x

Cited by 2 publications

(1 citation statement)

References 33 publications

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“…In particular, GG showed negligible antioxidant properties [30] while NaALG was found to have mild antioxidant properties [31]. On the other hand, significant antioxidant activity can be associated with tartaric acid used as crosslinker [32,33]. Indeed, a solution of TA 100 µg/mL was tested and an RSA% value equal to 41.0 ± 1.2% was found.…”

Section: Oleuropein Detection Via Hplc and Franz Cell Resultsmentioning

confidence: 97%

Oleuropein-Rich Gellan Gum/Alginate Films as Innovative Treatments against Photo-Induced Skin Aging

et al. 2023

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Olea europaea L. leaf extracts (OLEs) represent highly value-added agro-industrial byproducts, being promising sources of significant antioxidant compounds, such as their main component, oleuropein. In this work, hydrogel films based on low-acyl gellan gum (GG) blended with sodium alginate (NaALG) were loaded with OLE and crosslinked with tartaric acid (TA). The films’ ability to act as an antioxidant and photoprotectant against UVA-induced photoaging, thanks to their capability to convey oleuropein to the skin, were examined with the aim of a potential application as facial masks. Biological in vitro performances of the proposed materials were tested on normal human dermal fibroblasts (NhDFs), both under normal conditions and after aging-induced UVA treatment. Overall, our results clearly show the intriguing properties of the proposed hydrogels as effective and fully naturally formulated anti-photoaging smart materials for potential use as facial masks.

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Section: Oleuropein Detection Via Hplc and Franz Cell Resultsmentioning

confidence: 97%

Oleuropein-Rich Gellan Gum/Alginate Films as Innovative Treatments against Photo-Induced Skin Aging

et al. 2023

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Determination of Antioxidant Capacity and Total Phenolic and Ascorbic Acid Contents of Some Fruits and Vegetables with an Electrochemical Approach

Koc

Savan

Karabulut

2022

Preprint

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The determination of antioxidant capacity, total phenolic and ascorbic acid contents with high accuracy and efficiency, low cost, and fast methods has great analytical importance. The antioxidant capacity, total phenolic and ascorbic acid contents of apricot, arugula, banana, cranberry, spinach, and strawberry were investigated with an electrochemical approach and their compatibility with conventional methods. Antioxidant activity was determined by ABTS and DPPH assays, total phenolic content was determined by the Folin Ciocalteu method, which are spectrophotometric techniques, and ascorbic acid was quantified by HPLC technique. In order to perform more sensitive and simultaneous measurements in electrochemical measurements, the surface of the glassy carbon electrode was modified by electropolymerization of p-toluene sulfonic acid (TSA/GCE). The TSA/GCE modified sensor was used for the first time for the determination of antioxidant capacity and total phenolic content. The surface of the modified sensor was characterized by cyclic voltammetry and scanning electron microscopy. The TSA/GCE sensor was linearly correlated with the DPV technique for Trolox and gallic acid in 0.1 M NaNO3 and ascorbic acid in phosphate buffer solution pH 7.4 supporting electrolyte solution. Electrochemical methods have offered a promising alternative for the determination of antioxidant capacity and total phenolic content due to their simplicity, rapid response, low cost, sensitivity, and reproducibility.

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Study of the Influence of Some Compounds on the Prediction Equations of Total Phenolic Content and Antioxidant Capacity by Colorimetric Parameters

Cited by 2 publications

References 33 publications

Oleuropein-Rich Gellan Gum/Alginate Films as Innovative Treatments against Photo-Induced Skin Aging

Oleuropein-Rich Gellan Gum/Alginate Films as Innovative Treatments against Photo-Induced Skin Aging

Determination of Antioxidant Capacity and Total Phenolic and Ascorbic Acid Contents of Some Fruits and Vegetables with an Electrochemical Approach

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