Sabinsa Develops L- Selenomethionine HPLC Assay

Sabinsa Develops L-Selenomethionine HPLC Assay
The R&D staff at Sabinsa Corporation, Piscataway, NJ, have developed and validated an HPLC assay procedure, which was also recently reviewed and approved by the U.S. Pharmacopeial Convention. As a courtesy, Sabinsa has sent this method to the leading analytical labs that service the dietary supplement industry. Over the past few years in marketing its Selenium SeLECT ingredient, Sabinsa has encountered several selenium containing products claiming to provide L-(+)-Selenomethionine. HPLC analysis of several commercially available samples offered as L-(+)-Selenomethionine revealed that a majority are spurious. A physical mixture of an inorganic or organic selenium salt with methionine does not make L-(+)-Selenomethionine.