Research on Resin Separation Technology of Resveratrol and Catechin from Peanut Skin

摘要

Research had been carried out on the technology of separating resveratrol and catechin extracted from the peanuts skin. The macroprous adsorption resin AB-8 had been selected from 3 kinds of carriers by static adsorption and deadsorption test. The single factor tests and response surface experiments had been applied to optimize the enrichment and separation condition of resveratrol and catechin. The optimum adsorption conditions were as follows: feeding rate 2mL/min, pH 6.0 with the concentration of resveratrol and catechin to be 2μg/mL and 0.5mg/mL respectively. The optimum elution conditions were elution rate 1.5 mL/min and pH5.0. Resveratrol and catechin could be purified and separated by different conditions. Resveratrol was eluted by 20% ethanol while catechin by 60% ethanol. After concentrating and drying, the contents of resveratrol and catechin were 49.63% and 91.07%, respectively.