Antioxidant activity and the tocopherol and phenol contents of grape residues

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F19%3A43918473" target="_blank" >RIV/60461373:22330/19:43918473 - isvavai.cz</a>

Výsledek na webu

<a href="https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_14_2_4146_Burcova_Antioxidant_Activity_Tocopherol_Phenol_Contents/6790" target="_blank" >https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_14_2_4146_Burcova_Antioxidant_Activity_Tocopherol_Phenol_Contents/6790</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.15376/biores.14.2.4146-4156" target="_blank" >10.15376/biores.14.2.4146-4156</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Antioxidant activity and the tocopherol and phenol contents of grape residues

Popis výsledku v původním jazyce

The antioxidant activity and the tocopherol and polyphenol contents of organic grapevines residue were analyzed after Soxhlet extraction of grape seeds and skin with ethanol and petroleum ether. The highest antioxidant activity was determined for the ethanol extract of the seeds and was 58.65 μM Trolox/mg, which was four times higher than for the ethanol extract of the skin at 14.24 μM Trolox/mg. It was comparable to that of the alpha-tocopherol (62.28 μM Trolox/mg) and butylated hydroxyanizol (69.55 μM Trolox/mg). A concentration of 29.5 μg/mL ethanol seed extract was needed to decrease the initial DPPH radical concentration by 50%. The high antioxidant activity was because of the high tocopherol (402.28 mg/kg) and total phenols contents (113.7 gallic acid equivalent (g/kg)) in the seeds. The dominant polyphenol in the ethanol seed extract was coumaric acid (10.97 g/kg). The dominant polyphenols in the ethanol skin extracts were rutin (6.79 g/kg), quercetin (3.75 g/kg), and catechin (3.99 g/kg), which can be used in functional foods to reduce risk factors for several human diseases. © 2019, North Carolina State University.

Název v anglickém jazyce

Antioxidant activity and the tocopherol and phenol contents of grape residues

Popis výsledku anglicky

The antioxidant activity and the tocopherol and polyphenol contents of organic grapevines residue were analyzed after Soxhlet extraction of grape seeds and skin with ethanol and petroleum ether. The highest antioxidant activity was determined for the ethanol extract of the seeds and was 58.65 μM Trolox/mg, which was four times higher than for the ethanol extract of the skin at 14.24 μM Trolox/mg. It was comparable to that of the alpha-tocopherol (62.28 μM Trolox/mg) and butylated hydroxyanizol (69.55 μM Trolox/mg). A concentration of 29.5 μg/mL ethanol seed extract was needed to decrease the initial DPPH radical concentration by 50%. The high antioxidant activity was because of the high tocopherol (402.28 mg/kg) and total phenols contents (113.7 gallic acid equivalent (g/kg)) in the seeds. The dominant polyphenol in the ethanol seed extract was coumaric acid (10.97 g/kg). The dominant polyphenols in the ethanol skin extracts were rutin (6.79 g/kg), quercetin (3.75 g/kg), and catechin (3.99 g/kg), which can be used in functional foods to reduce risk factors for several human diseases. © 2019, North Carolina State University.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21101 - Food and beverages

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

BioResources

ISSN

1930-2126

e-ISSN

—

Svazek periodika

14

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

4146-4156

Kód UT WoS článku

000466449000117

EID výsledku v databázi Scopus

2-s2.0-85071130121