Soy protein isolate

Soy protein isolate (SPI, CAS 9010-10-0), also sold as isolated soya protein, is a refined plant-derived protein fraction extracted from defatted soybean meal.

Where is Soy protein isolate used?

• Food manufacturing: emulsification, water-binding and textural structure in processed meat, dairy alternatives and plant-based products
• Nutritional supplements: primary protein source in protein powders, meal replacements and infant formula bases
• Animal nutrition: digestible high-protein binder replacing fishmeal in aquafeed and pet food
• Personal care: hair conditioning treatments
• In skin-care products it improves moisture retention and film formation.

Commercial specifications

• Protein content typically above 90% on a dry basis
• Functional sub-grades: emulsifying, gelling or dispersible types