Production methods: soy protein isolate
Edible soy protein "isolate" is derived from defatted soy flour with a high solubility in water (high NSI). The aqueous extraction is carried out at apHbelow 9. The extract is clarified to remove the insoluble material and the supernatant liquid is acidified to a pH range of 4-5. The precipitated protein-curd is collected and separated from the whey bycentrifuge. The curd is usually neutralized withalkalito form the sodium proteinatesaltbefore drying.
Plastics, polyesters, textile fibres.