Patent ID: 8404293

Claim:
A method for physical separation and concentration of bioactive phenolics having molecular weights of less than 1,000 Daltons from fruits, berries and vegetables comprising: subjecting a fruit, berry or vegetable extract solution having a Brix of from about 1 to about 4 to ultrafiltration using an about 2,000-6,000 Dalton cutoff ultrafiltration membrane under a pressure of about 30-120 psi, and a temperature of about 80-110° F., followed by subjecting the resulting retentate to diafiltration-ultrafiltration with the co-injection of water, using an about 2,000-6,000 Dalton cutoff ultrafiltration membrane under a pressure of about 30-120 psi, and a temperature of about 80-110° F., and recovering the diafiltered retentate containing bioactive phenolics having molecular weights of less than 1,000 Daltons.