Chemical Composition of Two Different Extracts of Berries Harvested in Serbia

Pavlović, Aleksandra; Dabić, Dragana; Momirović, Nebojša; Dojčinović, Biljana; Milojković‐Opsenica, Dušanka; Tešić, Živoslav Lj.; Natić, Maja

doi:10.1021/jf400607f

Cited by 54 publications

(41 citation statements)

References 25 publications

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“…Polyphenols from the skin and seeds were extracted by the modified method according to Pavlović et al [34]. They were manually extracted from frozen berries.…”

Section: Preparation Of Grape Seeds and Skin Sample Extractsmentioning

confidence: 99%

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The Effect of Early and Late Defoliation on Phenolic Composition and Antioxidant Properties of Prokupac Variety Grape Berries (Vitis vinifera L.)

Ćirković¹,

Matijaševic

Deletic³

et al. 2019

Agronomy

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The influence of leaf area and various variants of manual defoliation on the phenolic profile of the Prokupac variety grape berry were investigated in the agroecological conditions of southern Serbia. The following four trial variants of manual defoliation were assessed: Early defoliation-variant I (flowering stage, 50% open flowers); early defoliation-variant II (grape size 3-5 mm); late defoliation-variant III (onset of grape ripening, veraison); and control (no defoliation). The first six leaves of each primary shoot were removed from all defoliated vines. The greatest assimilation area of primary and lateral shoots during the study was observed in the control, i.e., the trial variant with no defoliation. Defoliation significantly decreased the grape yield of the all three defoliated variants in regard to the control. The phenolic profile of the three variants and control was established by analyzing the grape seeds and skin. Based on the collected results for the Prokupac variety, significant differences between the trial variants were established regarding the content of phenols and total polyphenols, as well as radical scavenging activity. Defoliation variants showed a significant effect on the total phenols content of grape skin. In all defoliation variants, as well as in the control, high amounts of ellagic acid were measured. Resveratrol was identified only in grape skin samples of the control variant. The removal of leaves increased the concentration of phenolic compounds in variants where early defoliation was applied. The highest total anthocyanins content was found in 2015 in variant I, where leaves were removed during the full flowering stage.

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“…Polyphenols from the skin and seeds were extracted by the modified method according to Pavlović et al [34]. They were manually extracted from frozen berries.…”

Section: Preparation Of Grape Seeds and Skin Sample Extractsmentioning

confidence: 99%

“…The total phenolic content of seeds and skin was determined using the partially modified spectrophotometric method according to Folin-Ciocalteu described by Pavlović et al [34]. A standard curve was constructed with 20, 40, 60, 80, and 100 mg gallic acid per liter.…”

Section: Determination Of the Total Phenolic Content (Tpc)mentioning

confidence: 99%

The Effect of Early and Late Defoliation on Phenolic Composition and Antioxidant Properties of Prokupac Variety Grape Berries (Vitis vinifera L.)

Ćirković¹,

Matijaševic

Deletic³

et al. 2019

Agronomy

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“…They are also rich in organic acids (citric, fumaric, tartaric) that determine taste and flavor and typically contain low amounts of fat and proteins (Ruby et al 2000;Sturm et al 2003). Some fruits (mainly berries) are rich sources of flavonoids and other phenolic compounds possessing antioxidant activity (Määttä et al 2003;Pavlović et al 2013), but fruits might be also a source of toxic elements, mycotoxins, or pesticides (Pavlović et al 2013;Stachniuk et al 2017).…”

Section: Preparation Of Fruits and Their Related Products For Patulinmentioning

confidence: 99%

Developments in the Monitoring of Patulin in Fruits Using Liquid Chromatography: an Overview

2018

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Patulin is a mycotoxin that exhibits a number of toxic effects in animals. The main sources of patulin intake in human diet that was shown for EU consumers are apple juice and nectar and for this reason, apple-based food is most often monitored for this mycotoxin. However, the presence of patulin in other fruits, including stone fruits, and soft fruits has been reported as well. Most of them are seasonal, suitable for consumption for short time, and are usually processed in order to be commercially available throughout the year. Patulin can also be generated during food storage and remains stable over food processing procedures. Therefore, constant monitoring of different fruit-based products ought to be carried out to provide proper estimation of human exposure to this toxin. The preferred approach used for mycotoxin determination in a variety of foods is liquid chromatography (LC) allowing quantitative analysis of patulin content. This paper presents recently proposed LC methods with ultraviolet and mass spectrometric detection for patulin quantification in fruits and derived products. We focus on developments in sample preparation and the applied analytical conditions.

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“…N, K, Ca, Fe, Sl and Na content was 6412, 1300, 13,800, 800, 420 and 120 rpm, respectively. Generally, the elements like K and Ca are mostly present in all the berries like raspberry, blackberry, mulberry and strawberry (Pavlovic et al 2013). Ca has been reported to be effective in building of skeletal structures and muscle functioning which was beneficial to human body so that they were thought to be used as food materials useful in health.…”

Section: Amino Acids and Mineralsmentioning

confidence: 99%

Maesa indica: a nutritional wild berry rich in polyphenols with special attention to radical scavenging and inhibition of key enzymes, α-amylase and α-glucosidase

et al. 2016

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The present study was aimed to evaluate the nutritional, antioxidant properties and inhibition of the key enzyme such as a-amylase and a-glucosidase from the fruits of Maesa indica. The results revealed that M. indica fruits possess an enormous amount of protein (45.68 mg/ g), carbohydrates (25.12 mg/g) and mineral elements. The acetone extract were capable of hunting radicals by providing electrons and break chain reaction, especially in ABTS Á? (3719.23 lmol TE/g extract), OH Á (66.50 %) and NO Á (81.50 %) radical scavenging assays. The methanol extract showed a strong inhibition towards a-amylase and a-glucosidase (IC 50 of 37.80 and 23.74 lg/mL, respectively). HPLC analysis enumerate that both extracts illustrates the presence of polyphenolic compounds namely quercetin, caffeic acid, rutin and chlorogenic acid.

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Chemical Composition of Two Different Extracts of Berries Harvested in Serbia

Cited by 54 publications

References 25 publications

The Effect of Early and Late Defoliation on Phenolic Composition and Antioxidant Properties of Prokupac Variety Grape Berries (Vitis vinifera L.)

The Effect of Early and Late Defoliation on Phenolic Composition and Antioxidant Properties of Prokupac Variety Grape Berries (Vitis vinifera L.)

Developments in the Monitoring of Patulin in Fruits Using Liquid Chromatography: an Overview

Maesa indica: a nutritional wild berry rich in polyphenols with special attention to radical scavenging and inhibition of key enzymes, α-amylase and α-glucosidase

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