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Characterization of MK₈(H₂) from Sp. B7740 and Its Potential Antiglycation Capacity Measurements

Overview
Journal Mar Drugs
Publisher MDPI
Specialties Biology
Pharmacology
Date 2018 Oct 21
PMID 30340371
Citations 4
Authors
Affiliations
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Abstract

Menaquinone (MK) has an important role in human metabolism as an essential vitamin (VK₂), which is mainly produced through the fermentation of microorganisms. MK₈(H₂) was identified to be the main menaquinone from sp. B7740, a bacterium isolated from the arctic ocean. In this work, MK₈(H₂) (purity: 99.75%) was collected through a convenient and economic extraction process followed by high-speed countercurrent chromatography (HSCCC) purification. Additionally, high-resolution mass spectrometry (HRMS) was performed for further identification and the hydrogenation position of MK₈(H₂) (terminal unit) was determined using nuclear magnetic resonance (NMR) for the first time. MK₈(H₂) showed a superior antioxidant effect and antiglycation capacity compared with ubiquinone Q10 and MK₄. High-performance liquid chromatography⁻mass spectrometer (HPLC-MS/MS) and molecular docking showed the fine interaction between MK₈(H₂) with methylglyoxal (MGO) and bull serum albumin (BSA), respectively. These properties make MK₈(H₂) a promising natural active ingredient with future food and medicine applications.

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