(see link below) Unless this material has been cold processed, stored away from heat and protected from sunlight, you can bet it's not all trans-resveratrol. That means any botanical source likely has high amounts of estrogenic activity from cis isomerization. I'd like to see some data showing the cis/trans ratio and total percentages in this product before I put 1200mg of it in my body.
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well you just managed to type a whopping amount of misinformation there D. But instead of just ignoring it I will play the game and approach everything one thing at a time
for starters, how about giving a real link so i can read the article you so kindly tried to reference. After that, you can show some evidence that 50% resveratrol from Japanese Knotweed contains substantial amounts of resveratrol.
cold pressed? do you even know what that means? It is a technique used for getting oil out of oilseeds not extracting compounds from plants. oh, and there are no problems with stability of resveratrol like you indicate
Journal of Medicinal Food
Resveratrol and Its Glycon Piceid Are Stable Polyphenols
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To cite this paper:
Jiri Prokop, Petr Abrman, Allen L. Seligson, Milos Sovak. Journal of Medicinal Food. 2006, 9(1): 11-14. doi:10.1089/jmf.2006.9.11.
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Jiri Prokop
1Interpharma Praha, a.s., Prague, Czech Republic.
Petr Abrman
1Interpharma Praha, a.s., Prague, Czech Republic.
Allen L. Seligson
Biophysica Research, San Diego, La Jolla, California.
Milos Sovak
Biophysica Research and University of California, San Diego, La Jolla, California.
Plant extracts containing phytopolyphenols, including resveratrol, are extensively used as nutraceutical supplements. Recent reports allege their lack of stability at ambient conditions. We have studied the stability of resveratrol and its glycon piceid in a mixture with a whole grape extract for 2 years (long-term stability) under Good Manufacturing Practice pharmaceutical protocols (at 60% humidity and 25°C). The neat compounds were followed for 4 years under conditions of "accelerated stability," at 75% humidity and 40°C, all in the presence of ambient air. Chromatographic analysis did not detect any instability, thus disproving the claims to the opposite. No storage precautions are necessary for these nutritional supplements.