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(A) Electron micrographs of grounded barley (blue), flaxseed (orange) and oats (grey). Size distribution (B) and average diameter and standard deviation (C) for each food supplement. (D) Representative FTIR spectra. L indicates lipides, P proteins, and PS polysaccharides. (E) Transmission intensity corresponding to the content in lipides, proteins, polysaccharides obtained from the FTIR. (F) Mineral concentration in each supplement.
