What Is Spermidine And How Is It Different From Spermidine Trihydrochloride?
Mar 28, 2025
What is Spermidine?
Spermidine powder is a natural polyamine compound, which is converted from putrescine by spermidine synthase. It is widely involved in life processes such as cell proliferation, autophagy and DNA stability.
Sources of spermidine:
1. Natural food
- Plants: wheat germ, soybeans, mushrooms, durian.
- Animal: bluefin tuna liver, natto, cheese.
2. Industrial preparation
- Microbial fermentation: using gene-edited high-yield strains of Escherichia coli, the fermentation efficiency reaches 25 g/L.
- Chemical synthesis: using putrescine and S-adenosylmethionine (SAM) as raw materials, produced by enzyme immobilization reaction, with a purity of ≥99.5%.
3. Human synthesis
Intestinal flora: About 30% of wheat germ spermidine is produced by the metabolism of intestinal Bacteroides and Lactobacillus.
Benefits:
1. Autophagy activation
It activates the AMPK/mTOR pathway and removes aging proteins in cells by simulating the effects of calorie restriction.
2. Anti-aging
It can extend the lifespan of yeast and nematodes by 20%-30%. Human cohort studies have shown that people who eat a high spermidine diet are 5-8 years younger in terms of physiological age.
3. Neuroprotection
It can promote neuronal synaptic plasticity and reduce the Aβ plaque density of Alzheimer's disease model mice by 40%.
Difference Between Spermidine and Spermidine Trihydrochloride:
| Characteristic | Spermidine | Spermidine Trihydrochloride |
| Molecular formula | C7H19N3 | C₇H₁₉N₃·3HCl |
| Structural features | Free alkaline polyamine containing 3 amino groups | Spermidine bound to 3 hydrochloric acid molecules |
| Stability | It needs to be stored at -20℃ away from light. It easily absorbs moisture and degrades at room temperature. | Degradation rate <5% after 2 years of storage at room temperature, high temperature resistant |
| Solubility | Slightly soluble in water, pH sensitive | Highly water soluble, stable at pH 3-7 |
Bioavailability and usage scenarios:
1. Absorption efficiency
- Spermidine: Oral bioavailability is only 12%-15%.
- Spermidine trihydrochloride: Its absorption rate is 35%-40%.
2. Core applications
(1) Wheat germ extract spermidine:
- Laboratory research: Added to cell culture medium to activate the autophagy pathway.
- In vitro experiments: Combined with liposomes for enhanced gene transfection.
(2) Spermidine Trihydrochloride:
- Anti-aging health products: 0.3-1.2 mg/kg daily dose.
- Drug carrier: Targeting tumor cell autophagy.
Contact Us:
Fruiterco is an export company that mainly produces plant extracts, health product raw materials, and cosmetic raw materials. The company has a 20+ professional service after-sales team.
Our products are sold to North America, Europe, Australia, South America and Asia. Our products have passed quality inspection and also support customer re-inspection. If you want to buy spermidine, you can contact us: Email: info@fruiterco.com.
References:
1. https://www.sciencedirect.com/science/article/abs/pii/S0308814624030589
2. https://www.linkedin.com/pulse/depth-review-spermidine-trihydrochloride-powder-phcoker
3. https://www.sciencedirect.com/topics/pharmacology-toxicology-and-pharmaceutical-science/spermidine
4. https://www.webmd.com/vitamins/ai/ingredientmono-1500/fermented-wheat-germ-extract
5. https://neuroganhealth.com/blogs/news/spermidine-foods
6. https://pmc.ncbi.nlm.nih.gov/articles/PMC8612618/
7. https://pmc.ncbi.nlm.nih.gov/articles/PMC6287690/
8. https://pmc.ncbi.nlm.nih.gov/articles/PMC6637774/
9. https://countrylifefoods.com/blogs/country-life-feed/wheat-germ-vs-wheat-bran-which-one-is-best-for-you
10. https://www.wikihow.com/Eat-Wheat-Germ






