Evidence map›Paper›PMID 31216700›Full record

ArticleAntioxidants (Basel, Switzerland)2019

Phytochemical Composition and Antioxidant Capacity of 30 Chinese Teas.

Guo-Yi Tang, Cai-Ning Zhao, Xiao-Yu Xu, Ren-You Gan, Shi-Yu Cao, Qing Liu, Ao Shang, Qian-Qian Mao, Hua-Bin Li

Open access · goldAbstract read
In one paragraph

Article in Antioxidants (Basel, Switzerland), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
53citing papers in PubMed, 2 pooled it
9.7field-weighted citation impact, top 1% 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

53 citing papers in PubMed, 2 syntheses or guidelines pooled it, 133 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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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

9 authors at 2 institutions in 1 country.

Guo-Yi TangGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. tanggy5@mail2.sysu.edu.cn.
Cai-Ning ZhaoGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. zhaocn@mail2.sysu.edu.cn.
Xiao-Yu XuGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. xuxy53@mail2.sysu.edu.cn.
Ren-You GanDepartment of Food Science & Technology, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China. renyougan@sjtu.edu.cn.ORCID 0000-0002-4162-1511
Shi-Yu CaoGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. caoshy3@mail2.sysu.edu.cn.
Qing LiuGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. liuq248@mail2.sysu.edu.cn.
Ao ShangGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. shangao@mail2.sysu.edu.cn.
Qian-Qian MaoGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. maoqq@mail2.sysu.edu.cn.
Hua-Bin LiGuangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China. lihuabin@mail.sysu.edu.cn.ORCID 0000-0003-2332-8554
Sun Yat-sen University · CNShanghai Jiao Tong University · CN

Funding

Shanghai Basic and Key Program 18JC1410800Shanghai Pujiang Talent Plan 18PJ1404600the National Key R&D Program of China 2018YFC1604400
6 · The paper itself

Abstract

Tea has been reported to prevent and manage many chronic diseases, such as cancer, diabetes, obesity, and cardiovascular diseases, and the antioxidant capacity of tea may be responsible for these health benefits. In this study, the antioxidant capacities of fat-soluble, water-soluble, and bound-insoluble fractions of 30 Chinese teas belonging to six categories, namely green, black, oolong, dark, white, and yellow teas, were systematically evaluated, applying ferric-reducing antioxidant power and Trolox equivalent antioxidant capacity assays. In addition, total phenolic contents of teas were determined by Folin-Ciocalteu method, and the contents of 18 main phytochemical compounds in teas were measured by high-performance liquid chromatography (HPLC). The results found that several teas possessed very strong antioxidant capacity, and caffeine, theaflavine, gallic acid, chlorogenic acid, ellagic acid, and kaempferol-3-

Indexed as

antioxidant activitycaffeineCamellia sinensiscatechinpolyphenolteatheaflavine

Identifiers

PMID31216700
PMCPMC6617242
OpenAlexW2949620253

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.