- Tytuł:
- Observation of Antioxidants Activity using NMR Relaxation Measurements
- Autorzy:
-
Wierzuchowska, D.
Witek, M.
Blicharska, B. - Powiązania:
- https://bibliotekanauki.pl/articles/1030645.pdf
- Data publikacji:
- 2018-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
76.60.-k
76.90.+d
76.30.Rn - Opis:
- Formation of free radicals in biological solutions leads to the changes in water protons relaxation times. Therefore, NMR relaxation measurements were used to investigate kinetics of oxidation processes induced by the addition, in low amounts, of hydrogen peroxide (H_2O_2) to aqueous protein solution and to blood serum. The measured relaxation times were not stable over time because of the progressive formation of free radicals and their damaging action to the protein structure. The addition of antioxidants (ascorbic acid, gallic acid etc.) changed the relaxation time courses due to free radical scavenging. Similar time courses, thus anti-oxidant actions, were observed in various blood serum without antioxidant additive. Moreover, the observed kinetics of spin-lattice relaxation time (T_1) depended on several factors, such as: structure and concentration of protein solutions and activity and concentration of the added antioxidants.
- Źródło:
-
Acta Physica Polonica A; 2018, 133, 2; 289-291
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł