Cited by 133Protein Hydrolysis and Bioactive PeptidesSkin Protection and AgingCollagen: Extraction and Characterization

Collagen peptides and the related synthetic peptides: A review on improving skin health

Open access
Zhao, Xiaocao, Zhang, Xuejiao, Liu, Dengyong·2021·Journal of Functional Foods

Abstract

With the emergence of social aging problem, people's demand for active ingredients for skin health protection and therapeutic efficacy increases. Bioactive peptides are the optimal substances for skin anti-aging with its great diversity of biological activities and high security, such as antioxidation, anti-aging, anti-diabetes, anti-hypertension, and antibacterial. In recent years, natural and synthetic anti-aging peptides have been extensively studied in vitro, in vivo and clinically. Anti-aging peptides, such as collagen peptides, can affect various physiological pathways of skin, and have significant skin protection effect when applied locally and eaten. These characteristics show that bioactive peptides can improve skin health by providing specific physiological functions. In this review, we summarized the research of anti-aging peptides and the finishing of anti-aging peptides on improving skin health which is mainly based on the collagen peptides and the related synthetic peptides.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.jff.2021.104680

Cites

81 of 81 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Zhao et al.'s review fails to address potential side effects or limitations of collagen and synthetic peptides.

    “Furthermore, while the review highlights the potential benefits of collagen and synthetic peptides for skin health, it fails to address potential side effects or limitations of these interventions.”

    From Cosmeceuticals in photoaging: A review. (2024) · cites this paper as [52]

    The review does address limitations. Section 3.2, “Synthetic peptide,” discusses poor skin permeability and instability, while the Conclusions note that some findings lack clinical trials and that mechanisms remain unclear. The cited claim is therefore contrary to the review on limitations, even if it does not provide a detailed discussion of adverse effects. (LLM, conf=0.90)

    Checked by a reasoning model — may be wrong.

    Experimental — accuracy not yet measured
  • Zhao et al.'s review on collagen and synthetic peptides has relatively low level of evidence because it primarily relies on previous studies and reviews with limited original research.

    “However, the level of evidence presented in this review is relatively low. The authors primarily rely on previous studies and reviews to support their claims, with limited original research cited throughout the article.”

    From Cosmeceuticals in photoaging: A review. (2024) · cites this paper as [52]

    The Introduction describes the article as a summary of prior in vitro, in vivo, and clinical research, and the Ethics statement says the review involved no human or animal experiments. That supports its reliance on existing research, but the paper does not rate its own level of evidence as relatively low. Its table of synthetic peptides also cites original clinical studies, so the assertion that original research is cited only sparingly is not established by our copy. (LLM, conf=0.83)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. Dominik, I., Eileen, J., Marc, H., Remo, C., Eliane, W., & Hugo, Z. (2015). Activation of TGF-β: A gateway to skin rejuvenation. Peptides, 10(6), 6-11.
  2. Madiha, F., Mehran, R., Alia, N., & Awan, S. J. (2018). A systematic review of aging and its causes. International Journal of Development Research, 8(11), 23904-23908. http:// www.journalijdr.com.

Cited by

Sorted by citations

Authors
Zhao, X., Zhang, X., & Liu, D.
Affiliations
Bohai University (CN)
Corresponding author
Liu, Dengyong
Venue
Journal of Functional Foods
Publisher
Elsevier BV
Published
2021-11
Volume
86
Pages
104680
ISSN
1756-4646 (ISSN-L)
OpenAlex
W3195978212
Cited by
133
References
81
Citations by year
2026: 28 · 2025: 36 · 2024: 35 · 2023: 24 · 2022: 9 · 2021: 1
FWCI
5.42
Type
journal article
Language
en
Open access
Locations
  • Journal of Functional Foods (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Natural Science Foundation of Liaoning Province (2019-MS-006)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Hydrolysis and Bioactive Peptides
  • Health Sciences › Medicine › Dermatology › Skin Protection and Aging
  • Physical Sciences › Materials Science › Biomaterials › Collagen: Extraction and Characterization
Keywords
collagen peptides, synthetic peptides, bioactive peptides, skin health, skin anti-aging, antioxidant activity, antidiabetic peptides, antibacterial peptides, topical application, dietary supplementation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review