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| Practice of preparation process of walnut protein or peptide powder |
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| DOI： |
| KeyWord:walnut walnut cake walnut protein powder walnut peptide powder subcritical extraction enzymolysis process practice |
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| Abstract: |
| The preparation process of walnut protein or peptide powder was practiced with low-temperature pressed walnut cake as raw material, and the detailed parameters were described. The contents of oil and protein were 0.92% and 54% respectively in the walnut meal after low-temperature subcritical counter-current extraction. The protein content of the protein powder was 80% and the acid soluble protein (ASP) of peptide powder was 75%. The yields of protein powder and peptide powder were 37% and 17.5% respectively, which showed that 370 kg protein or 175 kg peptide powder was obtained from per ton of defatted walnut meal. The refined walnut oil, protein powder, peptide powder and enzymolysis residue powder could be directly applied to develop functional food to realize comprehensive utilization of walnut resources. |
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