Evidence map›Paper›PMID 33043226›Full record

ArticleACS omega2020

Comparison of Vitamin C and Its Derivative Antioxidant Activity: Evaluated by Using Density Functional Theory.

Yuyang Liu, Chuanqun Liu, Jianjun Li

Abstract read
In one paragraph

Article in ACS omega, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–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

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. The Illusion of Simplicity: The Dramatic Failure of Koopmans' Theorem for Antioxidants in Solvents-The Ascorbic Acid Paradigm.Chemphyschem : a European journal of chemical physics and physical chemistry · 2026
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  4. Integrated quantum chemical andFood chemistry. Molecular sciences · 2026
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  11. Role of Natural Antioxidants in Cancer.Cancer treatment and research · 2024
    Review
  12. Article
  13. Comprehensive Overview of the Effects ofLife (Basel, Switzerland) · 2023
    Review
  14. Review
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  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

3 authors.

Yuyang LiuDepartment of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, China.
Chuanqun LiuSchool of Energy and Power Engineering, Northeast Electric Power University, Jilin 132000, China.
Jianjun LiDepartment of Orthopedics, Shengjing Hospital of China Medical University, Shenyang 110004, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vitamin C (VC) is an essential antioxidant, but its application is limited because of its unstable chemical properties. Hence, a variety of VC derivatives have emerged in practical antioxidant applications. To explore the relationship between the antioxidant properties and the chemical structures of vitamin C and its derivatives, density functional theory (DFT) was used in this work to calculate the reaction enthalpies of the mechanisms related to radical scavenging activity. The structures were optimized at the B3LYP-D3(BJ)/6-31G* level of theory. Single point calculations (SPE) were performed at the PWPB95-D3 (BJ)/def2-QZVPP level. To estimate the solvent effect on antioxidant properties, the SMD (solvation model based on density) method was used. The results showed that in the process of optimizing the chemical structure of vitamin C, the antioxidant capacity of its derivatives decreased slightly in aqueous solvents. In the calculation process, it is also found that in the choice of antioxidant mechanism, these compounds are more inclined to the hydrogen atom transfer (HAT) mechanism, and from the chemical structure point of view, the double bond of the lactone ring is essential for its free radical scavenging activity. In general, it is necessary to continue to optimize the structure of VC to obtain derivatives with better oxidation resistance and more practical value.

Identifiers

PMID33043226
PMCPMC7542841

What OpenQuestion holds

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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.