Dosage of lignans: sesamin, matairesinol, secoisolariciresinol.

Lignans are polyphenols found in flax and sesame seeds. They are known for their antioxidant and hormonal effects. Extracts can be standardized by measuring sesamin, matairesinol, and secoisolariciresinol. HPLC or LC-MS analysis is used. Matrices: seeds, plant extracts, powders, supplements.

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