Grape Seed Extract – Making it a lighter colour?
ByI will be amazed if anyone can answer this, here goes, Grape Seed extract when mixed with water is reddish brown in colour. It is a fantastic anti oxidant when used in skin care products but it makes creams and lotions a horrible muddy colour. I am looking for something Natural that can reduce the Red to maybe a light Yellow.
Oh and it also has to be PH 5-6 so that makes it hard. No person has been able to do this yet so any suggestions will be tested.
The best method to remove dyestuffs from the extract should be column chromatography. You can test for best solvent and adsorbens by thin layer chromatography, but you risk to loose active ingredients.
The antioxidant principle in grape seed extract are ( oligomeric ) proanthocyanidins. Their color depends on pH and purity.
( See source )
The methods to purify the extracts are mostly patented:
http://www.freepatentsonline.com/5484594.html
http://www.freepatentsonline.com/5912363.html
Grape seed oil also contains a high percentage of proanthocyanidins, should be optimal qualified for skin care and has a light color:
http://www.patentstorm.us/patents/7226627/description.html
The oligomeric proanthocyanidins from pine bark extract are light yellow and could be an alternative too.
Extraction process and more:
http://www.integratedhealth.com/infoabstract/pycdes.html
1 Comments
May 25th, 2009 at 2:52 pm
The best method to remove dyestuffs from the extract should be column chromatography. You can test for best solvent and adsorbens by thin layer chromatography, but you risk to loose active ingredients.
The antioxidant principle in grape seed extract are ( oligomeric ) proanthocyanidins. Their color depends on pH and purity.
( See source )
The methods to purify the extracts are mostly patented:
http://www.freepatentsonline.com/5484594.html
http://www.freepatentsonline.com/5912363.html
Grape seed oil also contains a high percentage of proanthocyanidins, should be optimal qualified for skin care and has a light color:
http://www.patentstorm.us/patents/7226627/description.html
The oligomeric proanthocyanidins from pine bark extract are light yellow and could be an alternative too.
Extraction process and more:
http://www.integratedhealth.com/infoabstract/pycdes.html
References :
http://www.biophenolix.com/beauty_skin.html