Are the ingredients of OPC-3 (pine bark, bilberry and grape seed extract) pesticide free?

All ingredients extracted from natural sources (such as pine bark, citrus, bilberry, grape seed and grape skin extracts) are tested using gas chromatography for pesticide residue and are pesticide free. On the label of ingredients and contents, what does 100:1 equivalent to fresh fruit 2.5g bilberry extract, 120:1 equivalent to dry seed grape seed extract; 600:1 equivalent to dry bark extract mean? These numbers represent extraction ratios for the herbal extracts.

Australia's TGA requires this presentation of extraction ratios on the labels. These numbers say something about the level of effort that is going into purifying the active materials from each plant source. For example, if a person ate 2.5 grams of fresh bilberries, you would get 25 mg of active polyphenolic compounds such as anthocyanidins.

In this case, since we are providing extracts as powders, the botanical company has done the extractions at this level of equivalency. You can see that in some cases as with grape seed, ... more.

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