Evidence map›Paper›PMID 31993173›Full record

ArticleFood science & nutrition2020

Optimizing synchronous extraction and antioxidant activity evaluation of polyphenols and polysaccharides from Ya'an Tibetan tea (

Qiaoran Zheng, Wenfeng Li, Heng Zhang, Xiaoxu Gao, Si Tan

Abstract read
In one paragraph

Article in Food science & nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
–field-weighted citation impact
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

21 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Frontiers in microbiology · 2024
    Article
  5. Article
  6. Article
  7. Review
  8. Nutrition research and practice · 2023
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Green extraction, chemical composition, andCurrent research in food science · 2022
    Article
  17. Oxidative medicine and cellular longevity · 2021
    Article
  18. Article
  19. Article
  20. 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.

Qiaoran ZhengSchool of Advanced Agriculture and Bioengineering Yangtze Normal University Chongqing China.ORCID https://orcid.org/0000-0002-3384-634X
Wenfeng LiSchool of Advanced Agriculture and Bioengineering Yangtze Normal University Chongqing China.
Heng ZhangDrug Control Institutions Ya'an Polytechnic College SiChuan China.
Xiaoxu GaoSchool of Advanced Agriculture and Bioengineering Yangtze Normal University Chongqing China.
Si TanSchool of Advanced Agriculture and Bioengineering Yangtze Normal University Chongqing China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The optimal synchronous conditions to extract tea polysaccharides (TPS) and tea polyphenols (TPP) from Ya'an Tibetan tea were investigated, and the antioxidative capacity of TPS and TPP was measured, and the tea was analyzed to identify the polyphenol compounds it contained. On the basis of single-factor experiments, a Box-Behnken design and response surface methodology were applied to optimize the hot water extraction conditions. The optimal extraction technology was determined as extraction temperature of 83°C, time of 104 min, and liquid-to-material ratio of 41 ml/g, yielding TPP and TPS at 42.70 ± 2.38 mg/g and 53.86 ± 3.79 mg/g, respectively. The TPS and TPP in Ya'an Tibetan tea have high eliminating activities on DPPH and strong reducing power, with TPP showing a higher antioxidant activity than TPS. UHPLC-QqQ-MS/MS analysis identified EGCG, GCG, and ECG as major polyphenol components in Ya'an Tibetan tea. These findings might promote the application of Ya'an Tibetan tea in the food industry.

Indexed as

antioxidant activityoptimizing synchronous extractiontea polyphenolstea polyphenols compositionstea polysaccharidesYa'an Tibetan tea

Identifiers

PMID31993173
PMCPMC6977498

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Registered trials

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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.