Isosaxalin
Isosaxalin, heraclenin and heraclenol 3'-Me ether have melanin biosynthesis inhibitory activities.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Korean Journal of Microbiology & Biotechnology, 2003 , 47 (12) :3829-36.
Melanin biosynthesis inhibitory activities of coumarins isolated from Angelica polymorpha MAXIM[Reference:
WebLink]
METHODS AND RESULTS:
During the screening for inhibitors of melanin biosynthesis from plant extract, Angelica polymorpha MAXIM which showed a high lecel of inhibition was selected. The inhibiting substances were purified form methanol extract of Angelica Polymorpha MAXIM followed by silica gel column chromatography and HPLC. The inhibitors were identified as heraclenin, Isosaxalin and heraclenol 3'-Me ether , by spectroscopic methods of ESI-MS, ©öH-NMR,©ö©øC-NMR, DEPT, HMQC and HMBC.
CONCLUSIONS:
These compounds did not have mushroom tyrosinase inhibitory activity, but showed a highly potent melanin biosynthesis inhibition zone in the plate culture of Streptomyces bikiniensis, a bacterium used as an indicator organism in this work. These compounds did not show any growth inhibition against S. bikiniensis at the same concentration of melanin biosynthesis test
