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Liu Q.,CAS Tianjin Institute of Industrial Biotechnology | Zhang W.,CAS Tianjin Institute of Industrial Biotechnology | Zhang W.,Tianjin University of Science and Technology | Wang H.,Bonna Agela Technologies Inc | And 6 more authors.
Journal of Chromatographic Science | Year: 2016

A hydrophilic interaction liquid chromatography method has been established for the quantification of ergothioneine (EGT) in fermentation broth. Chromatographic separation was conducted on a Venusil hydrophilic interaction liquid chromatography (HILIC) column (250 × 4.6 mm, 5 μm) at an elution rate of 1.0 mL/min with an isocratic mobile phase consisting of acetonitrile/20 mmol/L ammonium acetate solution (85: 15, v/v) adjusted to pH 6.0 with acetic acid. Analytes were detected at 254 nm using a UV-VIS detector. The injection volume was 10 μL, and the column temperature was 40°C. The limits of detection and limits of quantification were 63 and 21 μg/L, respectively. Excellent linearity [correlation coefficient (R2) = 0.9999] was achieved for EGT quantification in the range of 5-400 mg/L. The relative standard deviations of repeatability, intermediate precision and stability were 1.47, 1.03 and 1.66%, respectively, and EGT recoveries were within 99.2-100.8%. The chromatographic peak corresponding to EGT in the HILIC spectrum was confirmed using ESI-MS. In general, the method developed here is simple, reliable, accurate, and stable and may be useful for routine analyses in EGT biosynthesis research. © 2016 The Author 2016. Published by Oxford University Press.

Bonna Agela Technologies Inc. | Date: 2015-08-17

Chromatography columns for use in purification in the laboratory.

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