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Giant Knotweed Extract, also known as Huzhang (tiger cane) or Japanese knotweed is an east Asian species ( polygonum cuspidatum), belonging to the polygonaceae family. Resveratrol is found in the roots of Giant Knotweed Rhizome (Rhizoma Polygoni Cuspidati) and in other fruits as well as in the skin of red grapes. Red wine contains resveratrol of 0.1-14.3 mg/l. It is sold as a nutritional supplement derived primarily from Japanese knotweed, and it is extracted commercially – when under attack by pathogens such as bacteria or fungi.
How to distinguish the natural resveratrol and synthetic resveratrol
How to distinguish some suppliers selling synthetic resveratrol under the name of natural resveratrol as Polygonum cuspidatum extract or giant knotweed extract. Some even mix synthetic resveratrol 99% into the low spec resveratrol to make up the 50% resveratrol.
Unlike natural resveratrol, synthetic versions of resveratrol are using organic chemistry often leave significant amounts of unknown contaminants in the resveratrol. we could look into the manufacturing process of synthetic resveratrol of most synthetic manufacturers:
Method 1:From the above process, we do know that most of the synthetic resveratrol have the contaminants 3,5-dimethoxybenzaldehyde; Aluminium(II)chloride; 4--Hydroxyphenylacetic acid;Acetic anhydride; Triethylamine and (E )-2(4-Hydroxyphenyl)-3-(3,5- dihydroxyphenyl) acrylic acidWe can use GC-MS or HPLC-MS to detect the trace of above toxiferous contaminants.
Method 2:We may test other contents in the resveratrol. We know that there are emodin and other natural impurities, the HPLC spectrum has different peaks at various timing.
Method 3:We may test the proportion of cis-transveratrol and trans-resveratrol. cis-transveratrol and trans-resveratrol are the two forms of resveratrol in natural resveratrol powders. Trans-resveratrol is the active form that human is able to make use of, while the cis-transveratrol is inactive, and could not be applied. The proportion of cis-resveratrol is much higher than that of natural resveratrol powder. The optical rotation is somewhat different, too.
Method 4:We may test the chloridion. There are large amount chloridion in synthetic resveratrol while not in the natural resveratrol.
Method 5:Checking the carbon age in the composition of resveratrol. C14 is a good one. The age of carbon in the synthetic resveratrol is more than thousand years old, extracted from petroleum or fossil. While the carbon of natural resveratrol are absorbed from water, sun by the plant itself. And the age is within one or two years. This is the best and recommended way. If you have any doubt, or suggestions, please send email to us for further communication.
Why Resveratrol manufactured by Organic Herb Inc.？
1. Organic Herb Inc.has more than 15 years history of producing natural Revseratrol;
2. Organic Herb Inc. Is ISO, Kosher, Halal and FSSC 22000, Certified manufacturer;
3. Organic Herb Inc. Is the manufacturer developed the method to distinguish the natural and synthetic resveratrol.
4. Organic Herb Inc. has 50 tons of 98% resveratrol production capacity per year;
5. Organic Herb Inc. Located in the starting material Huzhang growing area Jiangxi province and near to Hubei province, and other location which have good quality starting material Huzhang.
6. Organic Herb Inc. Has its own patent of extraction and purification of resveratrol from Polygonum Cuspidatum root.
HPLC Fingerprint of resveratrol 98%
Material Safety Data Sheets (MSDSs)
*These statements have not been evaluated by the Food and Drug Administration.The product is not intended to diagnose, treat, cure or prevent any disease.*
