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| Process optimization of cottonseed protein and raffinose production from cottonseed meal |
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| DOI： |
| KeyWord:cottonseed protein degossypol solution raffinose degossypol process |
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| Abstract: |
| In order to produce high quality cottonseed protein and recycle the raffinose in the degossypol solution, the degossypol process of cottonseed protein and the preparation process of raffinose were studied. The results showed that under the conditions of cottonseed kernel powder degree about 21.44%, volume fraction of methanol(degossypol solvent) 80%-90%, and the ratio of material to solvent 1∶ 0.56-1∶ 0.63, it could not only achieve the best degossypol effect of cottonseed protein, but also could stably produce the degossypol solution with the raffinose content over 3%. When volatile constituent in the primary concentration was controlled to about 85%, the pH was 8-9 during flocculation, the pH was 5-6 during decolorization, and volatile constituent in the secondary concentration was about 45%, the raffinose content in the extracted crude product could reach 85%, and the content of raffinose after recrystallization could reach more than 98%. |
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