Journal of Food Science and Technology (Mysore) 2015-07-01

Importance of solvent association in the estimation of antioxidant properties of phenolic compounds by DPPH method.

Andrzej L Dawidowicz, Małgorzata Olszowy, Małgorzata Jóźwik-Dolęba

文献索引：J. Food Sci. Technol. 52 , 4523-9, (2015)

全文：HTML全文

摘要

The presented paper shows the influence of temperature increase in the range typically used during antioxidant measurements (15-35 °C) on the estimation of antioxidant properties of phenolic compounds (caffeic acid, ferulic acid, gallic acid, trolox, butylhydroxyanisole, butylhydroxytoluene and 2,6-diisopropylphenol) in associating and non-associating solvents. A significant influence of temperature on the DPPH(•)/antioxidant reaction kinetic is observed for strongly associating solvents (e.g. methanol). This trend is less marked for non-associating solvents (e.g. dioxane, ethyl acetate). The performed experiments prove that the change of solvent structure, caused by temperature increase, influences the estimation of antioxidant properties of phenolic compounds much more than the increase of kinetic energy of reacting molecules and/or the increase of the dissociation degree of hydroxyl groups occurring in antioxidants.

相关化合物

  • 甲醇
  • 丙泊酚
  • 2,2-联苯基-1-苦基...
  • 没食子酸; 3,4,5-三...
  • 1,1-二苯基-2-苦味...
  • 抗氧剂BHT
  • 咖啡酸
  • 2-异丙基苯酚
  • 4-羟基-3-叔丁基-苯...
  • 反式阿魏酸

相关文献：

BBS4 directly affects proliferation and differentiation of adipocytes.

2014-09-01

[Cell. Mol. Life Sci. 71(17) , 3381-92, (2014)]

Urinary metabolic fingerprinting of mice with diet-induced metabolic derangements by parallel dual secondary column-dual detection two-dimensional comprehensive gas chromatography.

2014-09-26

[J. Chromatogr. A. 1361 , 265-76, (2014)]

Biomolecular imaging with a C60-SIMS/MALDI dual ion source hybrid mass spectrometer: instrumentation, matrix enhancement, and single cell analysis.

2014-11-01

[J. Am. Soc. Mass Spectrom. 25(11) , 1897-907, (2014)]

Synergistic activity of tenofovir and nevirapine combinations released from polycaprolactone matrices for potential enhanced prevention of HIV infection through the vaginal route.

2014-10-01

[Eur. J. Pharm. Biopharm. 88(2) , 406-14, (2014)]

Antinematode activity of Violacein and the role of the insulin/IGF-1 pathway in controlling violacein sensitivity in Caenorhabditis elegans.

2014-01-01

[PLoS ONE 9(10) , e109201, (2014)]

更多文献...