Pinobanksin 3-O-propanoate
Pinobanksin 3-O-propanoate is a natiral product from forest trees.
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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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Journal of Agricultural Science, 2008, 18(1):195-203.
Flavonoids composition in propolis of citrus, forest trees and pines in Guilan Province.[Reference:
WebLink]
Propolis is a sticky and resinous substance that honey bees collect from different plant sources. The chemical composition of propolis is very complex and contains more than 200 different chemical components. The biological activity of propolis depends on its polyphenolic contents.
The flavonoids are the most important group of polyphenols which are devided to sub groups such as, flavones, flavanones, flavonols, dihydro flavonol and chalcones.
METHODS AND RESULTS:
This survey was conducted to determine propolis contents from citrus (S1), forest trees (S2) and pines (S3) in Chaboksar, Seahkal and Talesh, respectively in 2002-2003. In Guilan Province twenty honey bee colonies were prepared and placed in these areas. The samples were collected every two weeks in warm and end of the cold seasons. After extraction and separation of waxes and lipids, the samples were analysed by GC-MS and obtained mass spectra were compared with standards.
CONCLUSIONS:
The results showed the presence of Chrysin, Tectochrysin, Pinobanksin-3-aceatate and Pinostrobin in three areas, Aceacetin, Pinocembrin chalcone in S1, Galangin-3-methyl ether in S1 and S3 and Pinocembrin in S2 and S3. Pinobanksin-3-propanoate(Pinobanksin 3-O-propanoate) was obtained only in S2. The amount of total flavonoids in S1, S2 and S3 were 12.3, 11.4 and 10.6, respectively.
The results showed that propolis from three plant origins has good amount of flavonoids but different in quantity and type of these compounds.
