Analysis of Menaquinone-7 Content and Impurities in Oil and Non-Oil Dietary Supplements.

ABSTRACT: Rapid, global technological development has caused the food industry to use concentrated food component sources like dietary supplements ever more commonly as part of the human diet. This study analysed the menaquinone-7 (MK-7) content of dietary supplements in oil capsule and hard tablet forms. A novel method for separating and measuring geometric isomers of MK-7 in dietary supplements was developed and validated. Eleven different isomers of cis/trans- menaquinone-7 were identified. Identification of cis/trans isomers was performed by combination of HPLC, UPLC and HRMS-QTOF detection, whereas their quantities were determined by DAD detection. The content of menaquinone impurities was ascertained, including cis/trans- menaquinone-6 isomers (5.5⁻16.

SUBMITTER: Szterk A 

PROVIDER: S-EPMC6102598 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature