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2014 | 12 | 7 | 757-762
Tytuł artykułu

Obtaining and characterizing modified tannins by physical-chemical methods

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
After oxidation of tannins (Tannins 1–3) extracted from grape seeds, Tanoxil compounds with increased solubility and enhanced antioxidant activities were synthesized. In this research, ABTS+· assay and a chemiluminescence method were used for antioxidant measurement of hydrophilic compounds (Tanoxils 1–3). It was observed that the antioxidant activity (AA, %) is very similar for the three samples, while at the same time AA is quite high (93.16%–96.48%). The percentage of inhibition by ABTS+· is higher for Tanoxil 2 (96.4%) as compared to Tannin 2 compound (14.34%). Moreover, the total content (TCF) of carboxyl and phenolic groups was investigated. TCF values, determined for Tanoxil products, revealed a double (Tanoxil 1) or triple (Tanoxil 2) increase as compared to the value of the TCF of Tannin 1. Tanoxil products represent an interest for future research as they have a high AA (96.4%) and the content of acidic groups is significant (TCF, 0.191 meq g−1).
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
12
Numer
7
Strony
757-762
Opis fizyczny
Daty
wydano
2014-07-01
online
2014-04-30
Twórcy
  • Academy of Sciences of Moldova
  • Academy of Sciences of Moldova
  • “Politehnica” University of Bucharest
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-014-0505-7
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