Enhancing Yellow Pea Protein Extraction and Purification Through Ultrafiltration

Area of Science:

• Food Science
• Biotechnology
• Sustainable Agriculture

Background:

• Increasing demand for plant-based proteins necessitates efficient extraction methods for yellow pea protein (Pisum sativum L.).
• Conventional techniques like isoelectric precipitation (IEP) and wet fractionation yield moderate protein recovery (50-70%) and high water consumption.
• Reduced protein functionality is a limitation of current extraction processes.

Purpose of the Study:

• To evaluate ultrafiltration (UF) as an efficient and mild membrane-based alternative for yellow pea protein extraction.
• To optimize UF conditions for maximizing protein recovery and functionality.
• To assess the environmental impact, specifically water usage, of the UF process.

Main Methods:

• Ultrafiltration (UF) membrane technology was employed for yellow pea protein extraction.
• Process parameters were optimized to enhance protein recovery and functional properties.
• Water recycling strategies were integrated into the UF process to minimize water consumption.

Main Results:

• Optimized UF achieved protein recovery exceeding 85%, significantly higher than conventional methods.
• High protein solubility (>90%) and excellent emulsification capacity were maintained.
• Integration of water recycling reduced overall water consumption by up to 60%.

Conclusions:

• Ultrafiltration (UF) presents a superior method for yellow pea protein extraction, offering higher yields and better functionality.
• The UF process is more environmentally sustainable due to reduced water usage, especially with water recycling.
• This membrane-based approach provides an efficient alternative to traditional protein extraction techniques.