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Kaempferol |
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Product Name |
Kaempferol |
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Latin Name |
Kaempferol |
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Molecular Formula |
C15H10O6 |
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Molecular Weight |
286.23 |
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CAS NO |
520-18-3 |
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Appearance |
Yellow powder |
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Product Content |
≥98% |
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Analytical Method |
HPLC |
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Product Origin |
Kaempferia galanga
L. |
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Action and Uses |
kaempferol, Anti-inflammation,
Anti-bacteria, Restrain cough Antioxidant, Anti-spasmodic or
Spasmolytic, AntiulcerCholeretic, Diuretic, Relieve coughing
.The vacuoles of lower epidermal strips from Vicia faba
exhibit an intrinsic green fluorescence when incubated in
alkaline buffers. Using an alkaline-induced absorbance
change as a spectrophotometric assay, the major pigment
responsible for this fluorescence was isolated and
identified as the flavonoid: kaempferol 3-O-galactoside,
7-O-rhamnoside. The aqueous absorption maxima were 394 and
341 nanometers at pH 10.0 and 6.0, respectively, with a pKa
of 8.3 and the fluorescence emission maximum was 494
nanometers at pH 10.0. The in vivo concentration was
estimated to be between 3 and 10 micromolar. The absorption
spectrum of this flavonoid is different from the action
spectrum for stomatal opening indicating that this compound
is not the photoreceptor pigment for the blue light response
of Vicia faba guard cells |
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Analysis |
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Product content |
Kaempferol≥98% |
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Sieve analysis |
100% pass 80 mesh |
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Loss on Drying |
≤1.0% |
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Residue on Ignition |
≤1.0% |
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Heavy Metal |
<20ppm |
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As |
<2ppm |
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Residual Solvents |
Eur.Pharm.2000 |
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Microbiology |
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Total Plate Count |
<1000cfu/g |
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Yeast & Mold |
<100cfu/g |
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E.Coli |
Negative |
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Salmonella |
Negative |
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Conclusion |
Conform with specification |
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Storage |
Store in sealed containers at cool & dry
place. Protect from light, moisture and pest infestation
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Shelf life |
2 year when properly stored |
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