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Antioxidant capacity of teas and herbal infusions: polarographic assessment.
J Agric Food Chem. 2012 Sep 26; 60(38):9573-80.JA

Abstract

Hydrogen peroxide scavenging (HPS) activity of unfermented (green, yellow, and white), partially fermented (oolong), and completely fermented (black) tea (Camellia sinensis), maté (Ilex paraguariensis), and various herbal infusions, as well as individual compounds (flavan-3-ols, flavonols, cinnamic and benzoic acids, and methylxanthines), was assessed by recently developed direct current (DC) polarographic assay. Correlations of tea and herbal infusion HPS activity with total phenolic content determined using the Folin-Ciocalteu assay (FC-GAE) (0.81 and 0.93), ferric reducing/antioxidant power (FRAP) (0.97 and 0.92), 1,1-diphenyl-2-picrylhydrazyl (DPPH) (0.77 and 0.80), and 2,2'-azinobis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) scavenging (0.86 and 0.86) were statistically significant. Correlations between relative antioxidant capacity index (RACI), calculated by assigning all applied assays equal weight, and HPS (0.98), FRAP (0.97), ABTS (0.89), and DPPH (0.89) confirmed DC polarographic assay reliability when applied individually. Correlation analysis, ANOVA, and Levene and Tukey's HSD tests unequivocally confirmed this reliable, rapid, and low-cost assay validity, clearly demonstrating its advantages over spectrophotometric assays applied.

Authors+Show Affiliations

Institute of General and Physical Chemistry , P.O. Box 45, 11 158 Belgrade 118, Serbia. stasago@yahoo.co.ukNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

22950743

Citation

Gorjanović, Stanislava, et al. "Antioxidant Capacity of Teas and Herbal Infusions: Polarographic Assessment." Journal of Agricultural and Food Chemistry, vol. 60, no. 38, 2012, pp. 9573-80.
Gorjanović S, Komes D, Pastor FT, et al. Antioxidant capacity of teas and herbal infusions: polarographic assessment. J Agric Food Chem. 2012;60(38):9573-80.
Gorjanović, S., Komes, D., Pastor, F. T., Belščak-Cvitanović, A., Pezo, L., Hečimović, I., & Sužnjević, D. (2012). Antioxidant capacity of teas and herbal infusions: polarographic assessment. Journal of Agricultural and Food Chemistry, 60(38), 9573-80.
Gorjanović S, et al. Antioxidant Capacity of Teas and Herbal Infusions: Polarographic Assessment. J Agric Food Chem. 2012 Sep 26;60(38):9573-80. PubMed PMID: 22950743.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant capacity of teas and herbal infusions: polarographic assessment. AU - Gorjanović,Stanislava, AU - Komes,Draženka, AU - Pastor,Ferenc T, AU - Belščak-Cvitanović,Ana, AU - Pezo,Lato, AU - Hečimović,Ivana, AU - Sužnjević,Desanka, Y1 - 2012/09/17/ PY - 2012/9/7/entrez PY - 2012/9/7/pubmed PY - 2013/5/1/medline SP - 9573 EP - 80 JF - Journal of agricultural and food chemistry JO - J. Agric. Food Chem. VL - 60 IS - 38 N2 - Hydrogen peroxide scavenging (HPS) activity of unfermented (green, yellow, and white), partially fermented (oolong), and completely fermented (black) tea (Camellia sinensis), maté (Ilex paraguariensis), and various herbal infusions, as well as individual compounds (flavan-3-ols, flavonols, cinnamic and benzoic acids, and methylxanthines), was assessed by recently developed direct current (DC) polarographic assay. Correlations of tea and herbal infusion HPS activity with total phenolic content determined using the Folin-Ciocalteu assay (FC-GAE) (0.81 and 0.93), ferric reducing/antioxidant power (FRAP) (0.97 and 0.92), 1,1-diphenyl-2-picrylhydrazyl (DPPH) (0.77 and 0.80), and 2,2'-azinobis(3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) scavenging (0.86 and 0.86) were statistically significant. Correlations between relative antioxidant capacity index (RACI), calculated by assigning all applied assays equal weight, and HPS (0.98), FRAP (0.97), ABTS (0.89), and DPPH (0.89) confirmed DC polarographic assay reliability when applied individually. Correlation analysis, ANOVA, and Levene and Tukey's HSD tests unequivocally confirmed this reliable, rapid, and low-cost assay validity, clearly demonstrating its advantages over spectrophotometric assays applied. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/22950743/Antioxidant_capacity_of_teas_and_herbal_infusions:_polarographic_assessment_ L2 - https://dx.doi.org/10.1021/jf302375t DB - PRIME DP - Unbound Medicine ER -