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determination of compounds and the antioxidant

Determination of antioxidant compounds and antioxidant ... Different commercial edible oilseed samples were analyzed in order to evaluate the compounds involved in antioxidant activity. Fatty acids, triacylglycerols, tocopherols, chlorophyl

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Determination of antioxidant compounds and antioxidant ...

Different commercial edible oilseed samples were analyzed in order to evaluate the compounds involved in antioxidant activity. Fatty acids, triacylglycerols, tocopherols, chlorophylls, β-carotene, squalene, phenolic compounds and CIE L ∗ a ∗ b ∗ coordinates were assayed. Strong chemical variability depending on the oilseed variety was observed.

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Determination of phenolic compounds and antioxidant ...

Determination of phenolic compounds and antioxidant activity of a Mediterranean plant: The case of Satureja montana subsp. kitaibelii Author links open overlay panel Ana López-Cobo a Ana María Gómez-Caravaca a b Jaroslava Švarc-Gajić c Antonio Segura-Carretero a b Alberto Fernández-Gutiérrez a b

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Determination of the bioactive compounds, antioxidant ...

Determination of the bioactive compounds, antioxidant activity and chemical composition of Brazilian blackberry, red raspberry, strawberry, blueberry and sweet cherry fruits Author links open overlay panel Vanessa Rios de Souza a Patrícia Aparecida Pimenta Pereira b Thais Lomônaco Teodoro da Silva c Luiz Carlos de Oliveira Lima d Rafael Pio e ...

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Determination of the bioactive compounds, antioxidant ...

Determination of the bioactive compounds, antioxidant activity and chemical composition of Brazilian blackberry, red raspberry, strawberry, blueberry and sweet cherry fruits Food Chem . 2014 Aug 1;156:362-8. doi: 10.1016/j.foodchem.2014.01.125.

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Antioxidant compounds, assays of determination and mode of ...

Antioxidant compounds, assays of determination and mode of action Emad A. Shalaby1* and Sanaa M. M. Shanab2 1Biochemistry Department, Faculty of Agriculture, Cairo University, Giza, 12613, Egypt. 2Department of Botany, Faculty of Science, Cairo University, Giza, 12613, Egypt. Accepted 18 March, 2013

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Determination of the bioactive compounds, antioxidant ...

Determination of the bioactive compounds, antioxidant activity and chemical composition of Brazilian blackberry, red raspberry, strawberry, blueberry and sweet cherry fruits Author links open overlay panel Vanessa Rios de Souza a Patrícia Aparecida Pimenta Pereira b Thais Lomônaco Teodoro da Silva c Luiz Carlos de Oliveira Lima d Rafael Pio e ...

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Determination of phenolic compounds and ther antioxidant ...

PDF | In this work we determined total phenolic compounds, their antioxidant activity and their relationship, as well as the genetic components on the... | Find, read and cite all the research you ...

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Determination of some individual phenolic compounds and ...

Antioxidant phenolic compounds are commonly found in plants and plant‐derived products. Honeybees transfer some of these phenolic compounds from plants to honey. For example, gallic and p ‐coumaric acid are the dominant phenolic acids in Polish honeys 56 .

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Determination of the Total Antioxidant Capacity and ...

HPLC Determination of the Antioxidant Compounds A Shimadzu (Kyoto, Japan) HPLC system equipped with a diode array detector (SPDM10Avp) and a phenomenex Luna C-18(2) column (4.6 mm i.d. × 25 cm, 5 μm) was used for the quantification of the phenolic compounds of catechin, epicatechin, gallic acid, myricetin, quercetin, and rutin.

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Antioxidant Capacity and Determination of Total Phenolic ...

extract. The extract was used for antioxidant assays and the total phenolic compounds determination. 2.3. Determination of Antioxidant Activity by Ferric Thiocyanate Method The antioxidant activities were determined according to the method described by Mitsuda et al., [15]. 10 mg of methanol extract of Matricaria chamomilla parts

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Determination of the bioactive compounds, antioxidant activity and chemical composition of ...

Determination of the bioactive compounds, antioxidant activity and chemical composition of Brazilian blackberry, red raspberry, strawberry, blueberry and sweet cherry fruits Author links open overlay panel Vanessa Rios de Souza a Patrícia Aparecida Pimenta Pereira b Thais Lomônaco Teodoro da Silva c Luiz Carlos de Oliveira Lima d Rafael Pio e ...

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DETERMINATION OF TOTAL PHENOLIC COMPOUNDS AND EVALUATION OF THE ANTIOXIDANT ACTIVITY OF ...

Antioxidant activity On the other hand, several studies mention that it is difficult to fully evaluate the antioxidant activities of natural tea compounds simply by using a single method of determination [22-24]. For the FRAP method, the statistical analysis showed an important difference between artisanal tea and green tea Brand 2 (p = 0.019).

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Determination and comparison of phenolic compound content and antioxidant activity of ...

Phenolic compounds are an important group of antioxidants capable of scavenging free radicals (Kim et al., 2003, Middleton, 1998). The antioxidant hypothesis states that as antioxidants can prevent oxidative damages and an increased intake from the diet would therefore reduce the risks of chronic diseases and strengthen the immune system ( De ...

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Antioxidant Capacity and Determination of Total Phenolic Compounds in Daisy (Matricaria ...

extract. The extract was used for antioxidant assays and the total phenolic compounds determination. 2.3. Determination of Antioxidant Activity by Ferric Thiocyanate Method The antioxidant activities were determined according to the method described by Mitsuda et al., [15]. 10 mg of methanol extract of Matricaria chamomilla parts

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Determination of the Total Antioxidant Capacity and Quantification of Phenolic Compounds of ...

HPLC Determination of the Antioxidant Compounds A Shimadzu (Kyoto, Japan) HPLC system equipped with a diode array detector (SPDM10Avp) and a phenomenex Luna C-18(2) column (4.6 mm i.d. × 25 cm, 5 μm) was used for the quantification of the phenolic compounds of catechin, epicatechin, gallic acid, myricetin, quercetin, and rutin.

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Determination of the in vitro bioaccessibility of phenolic compounds and antioxidant ...

Determination of the in vitro bioaccessibility of phenolic compounds and antioxidant capacity of Juniper berry (Juniperus drupacea Labill.) pekmez Kübra ÖZKAN , Ayşe KARADAĞ* , Osman SAĞDIÇ Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering,Yıldız Technical University, İstanbul, Turkey

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Evaluation of the antioxidant capacity of bioactive compounds and determination of proline ...

Bioactive compounds and antioxidant activity. The determination of total phenolics was made according to the method proposed by Singleton et al. , conducted with extracting solution in honey acetone/water 70:30, sodium carbonate 7.5% and the reagent of Folin–Ciocalteu. The analysis standard is made in different concentrations of gallic acid ...

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Determination of antioxidant activity and phenolic compounds for basic standardization of ...

Determination of antioxidant activity and phenolic compounds for basic standardization of Turkish propolis Aslı Özkök1*, Merve Keskin2, Aslı Elif Tanuğur Samancı3, Elif Yorulmaz Önder3 and Çiğdem Takma4 Abstract This study aimed to determine the standard amount of antioxidant content and compounds of the propolis for

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Qualitative and quantitative determination of phenolic antioxidant compounds in red wine ...

of UV spectra to standard compounds. Typical compound ingredients in grape juice are gallic acid and syringic acid1. A more complex sample was obtained by a multi antioxidant fruit juice mixture bought in a local supermarket (Figure 4). This mixture contained juice and fruit pulp, and was made of a selec-tion of fruits, known for simple and

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Determination of the bioactive compounds, antioxidant activity and chemical composition of ...

Determination of the bioactive compounds, antioxidant activity and chemical composition of Brazilian blackberry, red raspberry, strawberry, blueberry and sweet cherry fruits Vanessa Rios de Souzaa,⇑, Patrícia Aparecida Pimenta Pereirab, Thais Lomônaco Teodoro da Silvac, Luiz Carlos de Oliveira Limad, Rafael Pioe, Fabiana Queirozd

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Rapid Determination of Antioxidant Compounds and ...

The extraction conditions applied in destructive analysis of Hibiscus sabdariffa L. (Hs) matrices before the measurement of antioxidant compounds may reduce their activities during isolation and purification due to decomposition. Hence, near infrared spectroscopic system was applied to determine these compounds. The calibration models developed by using partial least squares regression (PLSR ...

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Determination of some individual phenolic compounds and ...

Determination of some individual phenolic compounds and antioxidant capacity of mead produced from different types of honey Hüsne Akalın,1 Mustafa Bayram2* and Rahmi Ertan Anlı3 Theaimofthisstudy wastopromotemead (honeywine)productionbytesting the appropriatenessofdifferent honeyvarieties

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Antioxidant Capacity and Determination of Total Phenolic ...

extract. The extract was used for antioxidant assays and the total phenolic compounds determination. 2.3. Determination of Antioxidant Activity by Ferric Thiocyanate Method The antioxidant activities were determined according to the method described by Mitsuda et al., [15]. 10 mg of methanol extract of Matricaria chamomilla parts

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Determination of Phenolic Compounds, Procyanidins, and ...

The effects of dry processing and maturity on antioxidant activity, total phenolic content, total procyanidins, and identity of phenolic compounds in coffee leaves were evaluated. Fresh coffee leaves were tray-dried at 40 °C for 8 h before total phenolic content, total procyanidins, and antioxidant activity were analyzed. The drying process significantly (p < 0.05) improved the release of ...

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HPLC-DAD-ESI-QTOF-MS Determination of Bioactive Compounds ...

HPLC-DAD-ESI-QTOF-MS Determination of Bioactive Compounds and Antioxidant Activity Comparison of the Hydroalcoholic and Water Extracts from Two Helichrysum italicum Species Katja Kramberger 1,2, Darja Barlic-Maganjaˇ 1, Dunja Bandelj 3, Alenka Baruca Arbeiter 3, Kelly Peeters 4,5, Ana Miklavciˇ cˇ Višnjevec 3,* and Zala Jenko Pražnikar 1,*

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Antioxidant Compounds and Their Antioxidant Mechanism ...

An antioxidant is a substance that at low concentrations delays or prevents oxidation of a substrate. Antioxidant compounds act through several chemical mechanisms: hydrogen atom transfer (HAT), single electron transfer (SET), and the ability to chelate transition metals. The importance of antioxidant mechanisms is to understand the biological meaning of antioxidants, their possible uses ...

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[PDF] Determination of antioxidant capacities and ...

Determination of antioxidant capacities and biochemical compounds of Berberis vulgaris L. fruits @article{Gundogdu2013DeterminationOA, title={Determination of antioxidant capacities and biochemical compounds of Berberis vulgaris L. fruits}, author={M. Gundogdu}, journal={Advances in Environmental Biology}, year={2013}, pages={344-349} }

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Qualitative and quantitative determination of phenolic ...

determination of phenolic antioxidant compounds in red wine and fruit juice with the Agilent 1290 Infi nity 2D-LC ... and subsequently applied to detect polyphenolic antioxidant compounds in fruit juices and red wine in a qualitative and quantitative manner. ... Compounds used in the standard solution, retention times in the fi rst and second ...

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DETERMINATION OF ANTIOXIDANT CAPACITY, TOTAL PHENOLIC ...

of antioxidants, mainly phenolic compounds, such as flavonoids, rather than essential vitamins, such as vitamin C, which explains only 0.4% of the total antioxidant capacity (Boyer and Liu, 2004). In Chile, apples are one of the most important fruits. Recently, commercial apple production has reached 1.3 million t yr-1. Around 60% of such ...

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Changes in the composition of phenolic compounds and ...

Determination of total phenols The content of total phenolic compounds in the extracts was determined using the Folin–Ciocalteu’s reagent (Naczk and Shahidi 1989), and (?)-catechin was used as a standard. Determination of antioxidant activity of extracts by two distinct methods 1. DPPH radical scavenging activity of the extracts.

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