Application for novel electrochemical screening of antioxidant potential and phytochemicals in <i>Cornus mas</i> extracts

Szczepaniak, Oskar; Ligaj, Marta; Kobus‐Cisowska, Joanna; Maciejewska, Paulina; Tichoniuk, Mariusz; Szulc, Piotr

doi:10.1080/19476337.2019.1653378

Cited by 21 publications

(26 citation statements)

References 33 publications

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“…DPPH inhibition capacity was investigated according to the procedure described by Szczepaniak et al [44]. The calibration curve was prepared using Trolox standard solution in concentrations of 100-1000 µM.…”

Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Identification of Polyphenols from Coniferous Shoots as Natural Antioxidants and Antimicrobial Compounds

et al. 2020

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Currently, coniferous shoots are almost absent as a food ingredient despite their wide availability in many parts of the world. The aim of the study was to assess and compare the composition of selected plant metabolites, evaluate the antioxidant and antimicrobial properties of selected shoots collected in 2019 from the arboretum in Zielonka (Poland), including individual samples from Picea abies L. (PA), Larix decidua Mill (LD), Pinus sylvestris L. (PS), Pseudotsuga menziesii (PM) and Juniperus communis L. (JC). The present work has shown that aqueous extracts obtained from tested shoots are a rich source of phenols such as caffeic acid, ferulic acid, chlorogenic acid, 4-hydroxybenzoic acid and many others. Obtained extracts exhibit antioxidant and antimicrobial properties in vitro. The highest sum of the studied phenolic compounds was found in the PA sample (13,947.80 µg/g dw), while the lowest in PS (6123.57 µg/g dw). The samples were particularly rich in ferulic acid, chlorogenic acid and 4-hydroxybenzoic acid. The highest values regarding the Folin-Ciocâlteu reagent (FCR) and ferric reducing ability of plasma (FRAP) reducing ability tests, as well as the total flavonoid content assay, were obtained for the LD sample, although the LD (14.83 mg GAE/g dw) and PM (14.53 mg GAE/g dw) samples did not differ statistically in the FCR assay. With respect to free radical quenching measurements (DPPH), the PA (404.18-μM Trolox/g dw) and JC (384.30-μM Trolox/g dw) samples had the highest radical quenching ability and did not differ statistically. Generally, extracts obtained from PA and PS showed the highest antimicrobial activity against tested Gram-negative bacteria, Gram-positive bacteria and fungi.

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Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Identification of Polyphenols from Coniferous Shoots as Natural Antioxidants and Antimicrobial Compounds

et al. 2020

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“…The data collected on antioxidant properties of C. mas are in line with results of other studies. In the previous study, the authors indicated that Szafer had the highest antioxidant potential against ABTS, but poorer against DPPH radical [16]. Gąstoł et al [22] noted that mean ferric FRAP value for cornelian cherry juice was approximately 23.5 μmol Fe 2+ /mL, and de Biaggi et al [23] observed FRAP levels at 20.41 μmol Fe 2+ /g of fresh weight.…”

Section: Discussionmentioning

confidence: 97%

“…Extraction of test samples was done using the method described in previous study [16]. The fruit skin was cut to facilitate higher migration of phytocompounds to the extractant.…”

Section: Extract Preparationmentioning

confidence: 99%

“…Antioxidant capacity against ABTS cationic radical (TEAC) assay was performed using own method [16] based on Bartosz's analytical protocol [17]. First, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) stock solution was prepared by dissolving 19.5 mg ABTS (Sigma-Aldrich, Poland) and 3.3 mg potassium persulphate (POCH, Poland) in 7 mL phosphate buffer (pH 7.0, 0.1 M).…”

Section: Antioxidant Capacitymentioning

confidence: 99%

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Hypoglycaemic, antioxidative and phytochemical evaluation of Cornus mas varieties

Szczepaniak

Cielecka‐Piontek

Kobus‐Cisowska

2020

Eur Food Res Technol

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Cornelian cherry (Cornus mas L.) is a plant growing in Central and Eastern Europe. Its fruits are a rich source of anthocyanins, flavonoids and iridoids. Among the iridoids, loganic acid is the most prevalent. The study aimed to examine the relation between loganic acid content, antioxidant capacity and hypoglycaemic effect in vivo for three Polish cultivars of C. mas. All tested cultivars strongly inhibited α-glucosidase and had similar amounts of highly bioabsorbable loganic acid. The loganic acid content was similar for each cultivar tested, while the cultivars differed in content of flavonoids and anthocyanins. The highest antioxidant potential was observed in the fruits of cv. Szafer, and the highest α-glucosidase inhibitor was cv. P5. A statistical analysis has shown that hypoglycaemic properties are prevalently driven by anthocyanin content and the antioxidant capacity, especially ferric-reducing ability partially based on loganic acid.

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“…The inhibition capacity of DPPH was investigated according to the procedure performed by Szczepaniak et al (Szczepaniak et al, 2019). A calibration curve was prepared using a Trolox standard solution.…”

Section: Dpph Radical Scavenging Activitymentioning

confidence: 99%

Polyphenols composition, antioxidant and antimicrobial properties of Pinus sylvestris L. shoots extracts depending on different drying methods

Dziedziński¹,

Kobus‐Cisowska

Szymanowska

et al. 2020

Emir J Food Agric

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Scots pine (Pinus sylvestris L.) shoots have been increasingly commonly used as functional food or its component, the shoots contain various active components, unknown from other raw materials. The objective of the study was to assess the influence of the drying method on the content of bioactive compounds and antioxidative and antimicrobial activity of pine shoots. It was demonstrated that freeze drying (PSL), vacuum drying (PSP) and natural drying (PSN) have significant impact on the physicochemical properties, content of bioactive compounds and antioxidative activity of the prepared ethanol-water extracts. The content of the studied compounds varied significantly in the tested shoots. In spectrophotometric testing the highest total flavonoid content was demonstrated in the PSP sample, at 5.51 mg quercetin/g dw. On the other hand, the reducing capacity was as follows: PSN>PSP>PSL in the range from 13.4 to 5.73 mg gallic acid/g dw. However in assay conducted using HPLC methods the highest content of polyphenols characterized extract from freeze-dried raw material (9151.15 µg/g), followed by vacuum-dried (8264.57 µg/g), and the lowest content of phenolic compounds was found in convection-dried shoots (7621.76 µg/g). The studied extracts demonstrated antioxidative properties, both in ferric reducing antioxidant power assay (FRAP) as well as in free radical quenching measurement (DPPH). All of the studied extracts demonstrated antimicrobial and fungicidal properties, and they were particularly efficient in the case of gram-negative bacteria.

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Application for novel electrochemical screening of antioxidant potential and phytochemicals in Cornus mas extracts

Cited by 21 publications

References 33 publications

Identification of Polyphenols from Coniferous Shoots as Natural Antioxidants and Antimicrobial Compounds

Identification of Polyphenols from Coniferous Shoots as Natural Antioxidants and Antimicrobial Compounds

Hypoglycaemic, antioxidative and phytochemical evaluation of Cornus mas varieties

Polyphenols composition, antioxidant and antimicrobial properties of Pinus sylvestris L. shoots extracts depending on different drying methods

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