AI Article Synopsis
- The soy isoflavones daidzein and genistein are linked to various health benefits, but there’s limited knowledge about the isoflavone content and bioavailability of commercial supplements.
- This study developed a method using liquid chromatography-tandem mass spectrometry (LC-MS/MS) to measure isoflavones in human plasma.
- In a crossover study with 12 volunteers, differences in pharmacokinetic parameters between two isoflavone supplements revealed significant variations in their bioavailability and potential health effects.
Article Abstract
The soy isoflavones daidzein and genistein produce several biological activities related to health benefits. A number of isoflavone extracts are commercially available, but there is little information concerning the specific isoflavone content of these products or differences in their bioavailability and pharmacokinetics. This study describes the development and validation of an analytical method to detect and quantify daidzein, genistein, and equol in human plasma using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The method was applied in a crossover, randomized, bioavailability study. Twelve healthy volunteers were administered the same total isoflavones dose from two isoflavone supplement preparations (Super-Absorbable Soy Isoflavones (Life Extension, USA) and Fitoladius (Merck, Spain)). The pharmacokinetic parameters (AUC0-24/dose and Cmax/dose) of the isoflavones from the two preparations differed significantly. Such differences in bioavailability and kinetics may have relevant effects on the health benefits derived from their intake.
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| http://dx.doi.org/10.1021/acs.jafc.5b02891 | DOI Listing |
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