IPRONA developed the proprietary IPRONA Polyphenol Technology (IPT): an entirely mechanical, solvent-free separation, concentration and enrichment ultra-filtration process.

This process utilizes specially-designed membranes with different pore sizes to separate pressed fruit juice into two streams based on the sizes of the molecules. The high molecular weight fractions (larger molecules including polyphenols, anthocyanins and polysaccharides) are concentrated in one direction, the low molecular weight fractions (smaller molecules such as fructose and mineral salts) in another.
This methodology allows for extracting without resorting to using solvents. The entire fruit matrix of the berry is retained, and the original flavour and aroma profile are maintained.

*Craft® extracts are water-soluble and standardized to a polyphenol and anthocyanin specification.