Q.81
Soya protein concentrates and isolates contain protein % respectively
EXPLANATION
Cereal & Pulse Processing: Milling Operations (Roller, Hammer, Attrition), Parboiling & Extrusion
- Protein Concentration in Commercial Soy Ingredients:
- Standard Definitions (Moisture-Free Basis):
- Soy Flour: $\approx 50 - 55\%$ protein.
- Soy Protein Concentrate (SPC): Produced by aqueous alcohol extraction of defatted flakes; contains minimum 70% protein.
- Soy Protein Isolate (SPI): Produced by alkali extraction followed by isoelectric precipitation; contains minimum 90% protein.
- Conclusion: 70% and 90% (Option 1).
Correct option: (1) 70% and 90%
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