Sunflower Protein Concentrates and Isolates’ Low in Polyphenols and Phytate
1988; Wiley; Volume: 53; Issue: 4 Linguagem: Inglês
10.1111/j.1365-2621.1988.tb13545.x
ISSN1750-3841
AutoresMohammad Saeed, Munir Cheryan,
Tópico(s)Protein Hydrolysis and Bioactive Peptides
ResumoABSTRACT Protein concentrates and isolates from sunflower ( Helianthus annuus L.), essentially free of polyphenols and/or low in phytate, were prepared from dehulled seeds by a sequential extraction procedure using organic solvents, such as hexane for defatting and acidic butanol for removing polyphenols. Phytate was removed by aqueous extraction and separation at acidic and/or alkaline conditions, depending on the relative solubility of the protein and phytate. Reduced‐phytate concentrates and isolates developed off‐colors unless the polyphenol concentration was less than 0.05%. The protein solubility profile of the reduced‐phytate products was much better than that of the defatted meal, especially below the isoelectric point.
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