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Published on: December 27, 2016
A starch from Spirulina subsalsa: structural characterization and anti-photoaging activity.
Yang Zhao1, Qianchen Sun1, Kexin Pei1
1Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, China.
Carbohydrate Polymers
|February 19, 2026
Summary
Spirulina subsalsa polysaccharide SPS-1 protects skin from UV damage by reducing oxidative stress and inflammation. This natural compound enhances skin barrier function, offering potential for anti-photoaging skincare applications.
Area of Science:
- Biochemistry
- Dermatology
- Natural Products Chemistry
Background:
- Spirulina subsalsa polysaccharides are functional compounds with unexplored potential in skincare.
- Skin photoaging is a significant concern, necessitating novel protective agents.
Purpose of the Study:
- To isolate and characterize polysaccharides from Spirulina subsalsa.
- To investigate the anti-photoaging effects of a specific polysaccharide fraction (SPS-1) in vitro and in vivo.
Main Methods:
- Isolation and purification of polysaccharide fractions (SPS-1, SPS-2, SPS-3).
- Structural elucidation of SPS-1 using NMR and methylation analysis.
- Assessment of SPS-1's effects on UVB-irradiated HaCaT cells (oxidative stress, inflammation, ECM homeostasis).
- In vivo evaluation of SPS-1 on skin barrier function, hydration, and water loss.
Main Results:
- SPS-1 is a homogeneous neutral polysaccharide (glucose-rich, MW 2.89 × 10^5 g/mol) with a starch-like structure.
- SPS-1 attenuated oxidative stress, suppressed inflammation, and restored extracellular matrix homeostasis in UVB-exposed cells via MAPK/NF-κB pathways.
- In vivo, SPS-1 enhanced skin barrier function, improved hydration, and reduced water loss with sustained surface activity.
Conclusions:
- Spirulina subsalsa polysaccharide SPS-1 demonstrates significant natural anti-photoaging activity.
- SPS-1 shows promise for skincare applications due to its structure-function relationship and beneficial effects on skin health.
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