Unlike enocianina grape skin extracts from Europe, Polyphenolics does not add sulfur dioxide during the extraction of our grape skins. Therefore, Polyphenolics’ GSKE and GSKE-40 skin extracts contain less than 100 ppm and 75 ppm of sulfur dioxide, respectively, while competitors’ extracts may contain up to 5500 ppm of sulfur dioxide.
Posted in: Polyphenolics FAQs, Professional FAQs
