Evidence map›Paper›PMID 31408939›Full record

ArticleMolecules (Basel, Switzerland)2019

Antioxidant Activity and Main Chemical Components of a Novel Fermented Tea.

Tao Tong, Ya-Juan Liu, Jinhong Kang, Cheng-Mei Zhang, Seong-Gook Kang

Open access · goldAbstract read
In one paragraph

Article in Molecules (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
7.5field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 82 citations in OpenAlex.

  1. Pooled it
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  5. Review
  6. Article
  7. Review
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  19. Review
  20. Black Cumin (Microorganisms · 2022
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 2 countries.

Tao TongBeijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
Ya-Juan LiuDepartment of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea.
Jinhong KangCollege of Pharmacy, Korea University, Sejong 30019, Korea,.
Cheng-Mei ZhangDepartment of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea.
Seong-Gook KangDepartment of Food Engineering, Mokpo National University, 61 Dorimri, Chungkyemyon, Muangun, Jeonnam 534-729, Korea. sgkang@mokpo.ac.kr.
Mokpo National University · KRChina Agricultural University · CNKorea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the present study, we aimed to develop a novel fermented tea (NFT) product and to evaluate their in vitro antioxidant potential and chemical composition. We found that NFT contained a high level of total phenolic compounds (102.98 mg gallic acid equivalents/g extract) and exhibited diverse antioxidant activities, such as scavenging of 1,1-diphenyl-2-picryl-hydrazyl (DPPH) and hydroxyl radicals, as well as reducing power. The total catechins in NFT were comparable to those of Lipton black tea (LBT), but lower than those of Boseong green tea (BGT) or Tieguanyin oolong tea (TOT). Among all catechins tested, epigallocatechin (EGC) and epigallocatechin-3-O-gallate (EGCG) were the predominant compounds in NFT. In particular, the contents of total theaflavins (TFs), theaflavin (TF), theaflavin-3-gallate (TF3G), and theaflavin-3'-gallate (TF3'G) in NFT were significantly higher than that of BGT, TOT, or LBT. NFT had the highest level of total essential amino acid and γ-aminobutyric acid (GABA) compared with BGT, TOT and LBT. Furthermore, the sensory evaluation results showed that NFT had satisfactory color, aroma, taste, and overall acceptability scores. Our results highlight the potential usefulness of this novel fermented tea as a nutraceutical food/ingredient with special functional activities.

Indexed as

AntioxidantsBiflavonoidsBiphenyl CompoundsCamellia sinensisCatechinColorFermentationFlavonoidsGallic Acidgamma-Aminobutyric AcidHumansHydroxyl RadicalOdorantsPicratesTasteTea1,1-diphenyl-2-picrylhydrazylAntioxidantsBiflavonoidsBiphenyl CompoundsCatechinepigallocatechin gallateFlavonoidsGallic Acidgallocatecholgamma-Aminobutyric AcidHydroxyl RadicalPicratesTeatheaflavintheaflavin digallateantioxidantCamelia sinensiscatechinfermented teatheaflavinγ-aminobutyric acid

Identifiers

PMID31408939
PMCPMC6720624
OpenAlexW2968813759

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.