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. 2018 Mar 13;8:40. doi: 10.1186/s13568-018-0569-4

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© The Author(s) 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 3 — The mass spectrometry of vanillin glucoside produced during the phenolic biotransformation of Aspergillus luchuensis. The HRESI-mass spectrometry of vanillin glucoside was measured by LC/MS/MS. The accurate molecular formula of vanillin glucoside was determined to be C₁₄H₁₈O₈ based on the mass 313.0927 (M-H)⁻, 313.0926, calcd. for C₁₄H₁₈O₈. The other production ions derived from the vanillin (m/z: 161.0588, 177.0557, 180.0426 and 205.0495) were also detected which were structurally supported