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acid profile and antioxidant capacity of hazelnut

Phenolic acid profile and antioxidant capacity of hazelnut ... Phenolic acid profile and antioxidant capacity of hazelnut ( Corylus avellana L.) kernels in different solvent systems DANIELA GHIRARDELLO – SIMONA PROSPERINI – GIUSEPPE ZEP

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Phenolic acid profile and antioxidant capacity of hazelnut ...

Phenolic acid profile and antioxidant capacity of hazelnut ( Corylus avellana L.) kernels in different solvent systems DANIELA GHIRARDELLO – SIMONA PROSPERINI – GIUSEPPE ZEPPA – VINCENZO GERBI

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Phenolic acid profile and antioxidant capacity of hazelnut ...

Phenolic acid profile and antioxidant capacity of hazelnut (Corylus avellana L.) kernels in different solvent systems January 2010 Journal of Food and Nutrition Research 49(4):195-205

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Phenolic acid profile and antioxidant capacity of hazelnut ...

Limited information is available relating to the qualitative and quantitative composition of phenolic acids in hazelnut kernels. Many authors have proposed different techniques to extract phenolic compounds from nuts, therefore, the objective of this study was to investigate how the experimental conditions commonly used to detect soluble phenolics affected the yield of phenolic acids and the...

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Antioxidants in Hazelnuts (Corylus avellana L ...

Antioxidant characteristics of hazelnut and hazelnut oil. Recently, Arranz and colleagues found that hazelnut and pistachio oils exhibit a high antioxidant capacity, close to that of extra virgin olive oil, and higher than those of walnut, almond, and peanut oils (Arranz et al., 2008). They observed that after methanolic extraction of the polar ...

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Phenolic profiles and antioxidant activity of Turkish ...

The content of free and bound (ester-linked and glycoside-linked) phenolic acids in hazelnut samples are listed in Table 1.A total of ten phenolic acids were detected using LC–MS/MS, of which six consisted of hydroxylated derivatives of benzoic acid (gallic acid, protocatechuic acid, salicylic acid, syringic acid, vanillic acid, and 4-hydroxybenzoic acid) and four were hydroxycinnamic acid ...

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Phytochemical Compositions, Antioxidant Properties, and ...

zelnut including gallic acid, 4-OH benzoic acid, p-cou- maric sinaptic acid, and quercetin [14,15]. Antioxidant activities have been detected in many foods and food byproducts including fruits, vegetables, grains, seed oils, and seed flours [11,12,16-19]. Hazelnut extracted with 80% EtOH has also demonstrated antioxidant activities

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Effects of Roasting on the Antioxidant Status and Phenolic ...

The effect of roasting on the antioxidant status and phenolic profiles of seven commercial Turkish hazelnut varieties (namely, Çakıldak, Foşa, Karafındık, Mincane, Palaz, Sivri, and Tombul) was assessed. Samples were examined for their total phenolics, oxygen radical absorbance capacity (ORAC) values, condensed tannins, and phenolic acids (free and bound forms). Significant losses (p < 0 ...

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Comparative Flavan-3-ol Profile and Antioxidant Capacity ...

In the present study, the flavan-3-ol composition and antioxidant capacity of roasted skins obtained from the industrial processing of three commonly consumed tree nuts (i.e., peanuts, hazelnuts, and almonds), as well as fractions containing low and high molecular weight (LMW and HMW) flavan-3-ols, were studied with the aim of assessing their potential as a source of flavonoids.

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Phenolic, oxylipin and fatty acid profiles of the Chilean ...

Roasted cotyledons of the Chilean hazelnut (Gevuina avellana) are appreciated as snacks.The aim of our work was to assess the fatty acid, oxylipin and phenolic composition using gas chromatography (GC) coupled to mass spectrometry (MS), ultra- high performance liquid chromatography (UHPLC) coupled to MS and HPLC coupled to diode array detector (HPLC-DAD).

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Protein precipitating capacity and antioxidant activity of ...

Natural (raw) hazelnut was extracted with 80% (v/v) acetone to obtain crude phenolic extract that was then fractionated for elution of low-molecular weight (LMW) and high-molecular weight (HMW) fractions. LMW fraction was further purified (LWM-FP) to remove sugars and organic acids. The crude extract and its fractions were determined by measuring their protein precipitating capacity (PPC ...

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Phenolic acid profile and antioxidant capacity of hazelnut ...

Limited information is available relating to the qualitative and quantitative composition of phenolic acids in hazelnut kernels. Many authors have proposed different techniques to extract phenolic compounds from nuts, therefore, the objective of this study was to investigate how the experimental conditions commonly used to detect soluble phenolics affected the yield of phenolic acids and the...

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Phytochemical Compositions, Antioxidant Properties, and ...

zelnut including gallic acid, 4-OH benzoic acid, p-cou- maric sinaptic acid, and quercetin [14,15]. Antioxidant activities have been detected in many foods and food byproducts including fruits, vegetables, grains, seed oils, and seed flours [11,12,16-19]. Hazelnut extracted with 80% EtOH has also demonstrated antioxidant activities

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Phytochemical Compositions, Antioxidant Properties, and ...

Roasted and raw Turkish and Oregon hazelnuts were examined. Whole nuts, skins, and skinless nuts of both hazelnut varieties were tested for fat contents, fatty acid profiles. Hazelnut and other byproducts were extracted with 50% ace- tone and examined for total phenolic contents (TPC), antioxidant activities against the peroxyl (ORAC) and DPPH radicals, and were also administered in vitro to ...

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Effects of Roasting on the Antioxidant Status and Phenolic ...

The effect of roasting on the antioxidant status and phenolic profiles of seven commercial Turkish hazelnut varieties (namely, Çakıldak, Foşa, Karafındık, Mincane, Palaz, Sivri, and Tombul) was assessed. Samples were examined for their total phenolics, oxygen radical absorbance capacity (ORAC) value …

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Phenolic profiles and antioxidant activity of Turkish ...

The phenolic profiles and antioxidant status of hazelnut samples [natural (raw) hazelnut, roasted hazelnut, and roasted hazelnut skin] were compared. Free and bound (ester-linked and glycoside-linked) phenolic acids were examined using liquid chromatography-tandem mass spectrometry (LC-MS/MS). Comprehensive identification of phenolics was carried out using Q-exactive hybrid quadrupole-orbitrap ...

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Roasting Affects Phenolic Composition and Antioxidative ...

Hadeel Ali Ghazzawi, Khalid Al-Ismail, A Comprehensive Study on the Effect of Roasting and Frying on Fatty Acids Profiles and Antioxidant Capacity of Almonds, Pine, Cashew, and Pistachio, Journal of Food Quality, 10.1155/2017/9038257, 2017, (1-8), (2017).

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Frontiers | Kernel Nutrient Composition and Antioxidant ...

Compared with other four hazelnut kernels, C. heterophylla Fisch. was the lowest oil content of hazelnut with lower oleic acid content and higher linoleic acid content, obviously. The total protein content ranged from 13.15 to 18.35 g/100 g DW, and all amino acids were detected as hydrate amino acids, but Tryptophan, an essential amino acid ...

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Comparative flavan-3-ol profile and antioxidant capacity ...

Search worldwide, life-sciences literature Search. Advanced Search Coronavirus articles and preprints Search examples: "breast cancer" Smith J

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Phenolic Profile and Antioxidant Capacity of Walnut ...

Antioxidant capacity based on DPPH assay are influenced by genotypes and varied between 35.03 mmol Trolox /100 g to B20 and 75.89 mmol Trolox/100 g to B4, the difference between varieties being 2 ...

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Evaluation of antibacterial, antifungal, antiviral, and ...

antioxidant capacity of food involves the use of the free radical 2.2-diphenyl-1-picrylhydrazyl (DPPH). DPPH is widely used to test the ability of compounds to act as free radical scavengers or hydrogen donors, and to evaluate antioxidant activity of foods. DPPH is a purple-colored free stable radical; when reduced, it

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