Extraction and functional properties of protein from cold pressed canola and sunflower meals

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Pleasant Valley Oils Mills, a subsidiary of the Pleasant Valley Colony, has been producing and manufacturingpure, natural, and sustainable cold pressed canola and sunflower oils, and as the production levels increase thecompany is facing an increasing challenge of adding value to the protein-rich meal by-product. Developingvalue-added processing and applications of proteins from canola and sunflower cold pressed meals is importantto increase the company competitiveness and be a step toward zero waste production.The meals are good source of protein (30-50%) with 11S salt-soluble globulin and 2S water-soluble albumin asthe major components. Traditionally, heating is applied in canola oil processing which damages the proteinstructures, leading to reduced solubility and unfavorable flavor and color. The cold press method causes muchless alternation of protein native structures. This offers opportunity to develop protein ingredients of goodsolubility and functionality from the meals to target a wide range of food applications.This is a new collaboration between Dr. Chen and the Pleasant Valley Oils Mills to develop functional proteinsfrom cold-pressed canola and sunflower meals towards food applications. The specific objectives are to: 1)develop effective process to extract proteins from canola/sunflower cold-pressed meals; and 2) study thestructures and functional properties of the extracted proteins.The knowledge generated through this research will aid in development of strategies for extraction andutilization of canola and sunflower meal proteins. This research will also train one PDF and one graduatestudent in protein extraction and functionality study to meet the shortfall in food processing industry. Developfunctional food ingredients from these proteins will significantly increase economic returns on cropcomponents and enhance profitability and sustainability of oilseed producers and processors. The developmentof novel protein ingredients will support innovations of Canadian food industry.