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Antioxidant Capacity of Teas and Herbal Infusions: Polarographic Assessment

Overview of attention for article published in Journal of Agricultural & Food Chemistry, September 2012
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Title
Antioxidant Capacity of Teas and Herbal Infusions: Polarographic Assessment
Published in
Journal of Agricultural & Food Chemistry, September 2012
DOI 10.1021/jf302375t
Pubmed ID
Authors

Stanislava Gorjanović, Draženka Komes, Ferenc T. Pastor, Ana Belščak-Cvitanović, Lato Pezo, Ivana Hečimović, Desanka Sužnjević

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.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 60 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 1 2%
Unknown 59 98%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 11 18%
Student > Bachelor 7 12%
Student > Doctoral Student 7 12%
Researcher 7 12%
Student > Master 7 12%
Other 12 20%
Unknown 9 15%
Readers by discipline Count As %
Agricultural and Biological Sciences 14 23%
Chemistry 12 20%
Chemical Engineering 3 5%
Biochemistry, Genetics and Molecular Biology 2 3%
Physics and Astronomy 2 3%
Other 8 13%
Unknown 19 32%

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 August 2017.
All research outputs
#14,518,531
of 18,846,097 outputs
Outputs from Journal of Agricultural & Food Chemistry
#12,440
of 15,725 outputs
Outputs of similar age
#103,520
of 145,506 outputs
Outputs of similar age from Journal of Agricultural & Food Chemistry
#103
of 147 outputs
Altmetric has tracked 18,846,097 research outputs across all sources so far. This one is in the 19th percentile – i.e., 19% of other outputs scored the same or lower than it.
So far Altmetric has tracked 15,725 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 6.5. This one is in the 18th percentile – i.e., 18% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 145,506 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 25th percentile – i.e., 25% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 147 others from the same source and published within six weeks on either side of this one. This one is in the 27th percentile – i.e., 27% of its contemporaries scored the same or lower than it.