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Ursini F, Maiorino M, Valente M, Ferri L, Gregolin C
Q: What is the source of the lecithin
Classification into nonpolar/hydrophobic (aliphatic and aromatic), polar uncharged, acidic, and basic categories provides a working framework, though quantitative hydropathy scales such as Kyte-Doolittle and Hopp-Woods more rigorously capture side chain polarity by measuring free energies of transfer between aqueous and nonpolar environments