Research into the recovery of valuable products from side streams has increased over the past years [1]. Proteins derived from vegetative resources such as oilseed meals (canola, rapeseed, cottonseed, soybeans, and sunflower seed) are considered an alternative to animal proteins for cosmetic applications and for food consumption. However, the purification of vegetable proteins usually requires thermal or physico-chemical processes that can affect their functional properties and the nutritional value of the final product [2]. Adsorption technology is a promising alternative as it can be operated at mild conditions and might also lead to a higher purity of the product. After the oil has been extracted from the meal, a high amount of protein is left behind (~40% protein content) [3]. Proteins and polyphenols can be extracted from the meal and further separated from each other by using, for example, membrane filtration and adsorption. This paper will present a selection of suitable resins for the recovery of polyphenols and for protein purification from oilseed extracts. High throughput experimentation is used to evaluate a set of food grade macroporous polymeric resins (reverse-phase chromatography) for polyphenol recovery. Adsorption isotherms at different conditions and desorption reagents such as an ethanol/water mixture are evaluated. Additionally a set of multimode resins and weak cation exchangers are assessed for protein purification. A resin selection criterion is defined considering capacity, selectivity and ease of desorption. The selected resins will be used for industrial scale adsorptive process design for capture and purification of these valuable side products.

High throughput resin selection for the recovery of valuable compounds from food products

255th National Meeting (2018)

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