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What is Fisetin Powder Bulk?
Fisetin powder bulk is a natural flavonol that was first isolated from plants of the Anacardiaceae family, hence its name. Its molecular skeleton belongs to polyphenols, with a chemical formula of C₁₅H₁₀O₆, CAS No. 528-48-3, and is a pale yellow to off-white crystalline powder. It is insoluble in water, but easily soluble in polar solvents such as acetone, ethanol, and dimethyl sulfoxide. In nature, foods such as strawberries, apples, onions, cucumbers, and grape skins all contain trace amounts of Fisetin, but the total amount is extremely low - Japanese scholars have calculated that the average daily dietary intake per person is only about 0.4 mg. If you want to play a clear role in scientific research or functional foods, you usually need a "Fisetin powder" raw material with a purity of ≥98%, which is obtained through processes such as crude extraction of Cotinus coggygria or strawberry, chromatography refining, and recrystallization, and then qualified by HPLC external standard method before it can enter downstream applications.
COA of Fisetin Powder bulk
| Analysis | Description | Test Method |
| Appearance | Yellow Powder | Visual |
| Odor | Characteristic | Organoleptic |
| Identification | Conform with reference sample | Organoleptic |
| Mesh Size | 100% pass 80 mesh | 80mesh screen |
| Moisture Content | ≤ 1.0% | GB5009.3-2016 |
| Heavy Metals | ≤ 10 ppm | GB 5009.3 |
| Arsenic (As) | ≤ 1.5 ppm | GB 5009.4 |
| Lead (Pb) | ≤ 2 ppm | GB 5009.11 |
| Cadmium(Cd) | ≤1ppm | GB 5009.12 |
| Mercury (Hg) | ≤1ppm | GB 5009.17 |
| Total Plate Count | ≤10000 cfu/g | GB 5009.15 |
| Yeast and Mold | ≤100 cfu/g | GB 5009.3 |
| Escherichia Coli | < 10cfu/g | GB 5009.4 |
| Salmonella/25g | Absent | GB 5009.11 |
| Effective constituent | Fisetin≥98% | HPLC |
What is the effect of Fisetin powder on the brain?
Anti-inflammatory and immunomodulatory
One of the common pathological features of neurodegenerative diseases such as Alzheimer's disease (AD) and Parkinson's disease (PD) is chronic neuroinflammation. Fisetin reduces the release of proinflammatory cytokines TNF-α, IL-1β, and IL-6 by inhibiting the NF-κB signaling pathway, thereby reducing the "secondary blow" caused by excessive activation of microglia.
Promote neuroplasticity
Animal experiments have shown that Fisetin can activate the ERK/CREB pathway, increase the expression of synaptic proteins synapsin I and PSD95, and enhance long-term potentiation (LTP), which ultimately manifests as an improvement in learning and memory consolidation ability.
Reduce β-amyloid deposition
In AD transgenic model mice, continuous administration of Fisetin powder 25 mg/kg for 3 months can significantly reduce the area of Aβ42 plaques in the hippocampus and reverse memory deficits.
Activate SIRT1 longevity protein
Fisetin has been shown to upregulate SIRT1 expression, enhance mitochondrial function, and delay cell aging. This mechanism is not only related to neuroprotection, but is also considered a new target for anti-aging research.

In which fields can fisetin be applied?
Functional food/special medical food
Low dose (≤25 mg/portion) can be used as a "memory support" formula ingredient and added to energy bars and ready-to-drink functional beverages.
Anti-aging cosmetics
Using its strong antioxidant properties, fisetin powder can be added to creams and essences to combat skin oxidative stress and reduce photoaging.
New drug candidate compounds
The derivative CMS121 with fisetin as the parent core has been launched in the United States for the treatment of AD in Phase I trials and may enter the prescription drug market in the future.
Neuroscience research reagents
High-purity fisetin powder is widely used in cell oxidative stress models and animal behavioral experiments to study the mechanisms of Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis (ALS).
Sports Medicine
Preliminary studies have found that fisetin powder can fight chronic traumatic encephalopathy (CTE) caused by repeated concussions by inhibiting neuroinflammation and promoting neurotrophic factors.
Where can I buy fisetin powder bulk? Contact SOST
If you need raw materials of fisetin powder bulk that meet USP/EP standards and have a content of ≥98%, or want to carry out OEM/ODM private label production, you can directly contact SOST, a professional plant extract supplier. SOST has more than 10 years of experience in the production of flavonoid monomers, and can provide stable supply from grams to tons, and supports a full set of compliance documents such as COA, MSDS, and third-party test reports.
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Product Data Sheets
| Analysis | Description | Test Method |
| Appearance | Yellow Powder | Visual |
| Odor | Characteristic | Organoleptic |
| Identification | Conform with reference sample | Organoleptic |
| Mesh Size | 100% pass 80 mesh | 80mesh screen |
| Moisture Content | ≤ 1.0% | GB5009.3-2016 |
| Heavy Metals | ≤ 10 ppm | GB 5009.3 |
| Arsenic (As) | ≤ 1.5 ppm | GB 5009.4 |
| Lead (Pb) | ≤ 2 ppm | GB 5009.11 |
| Cadmium(Cd) | ≤1ppm | GB 5009.12 |
| Mercury (Hg) | ≤1ppm | GB 5009.17 |
| Total Plate Count | ≤10000 cfu/g | GB 5009.15 |
| Yeast and Mold | ≤100 cfu/g | GB 5009.3 |
| Escherichia Coli | < 10cfu/g | GB 5009.4 |
| Salmonella/25g | Absent | GB 5009.11 |
| Effective constituent | Fisetin≥98% | HPLC |
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