Help - Statistics
The service is unavailable for maintenance: Dec 9th, 2022 8:00 - 11th 15:00 UTC  Here for the details.

System version: 1.9.4


Data update




  Positive Negative All
Published 28 28 28

Number of Peaks

  ESI Positive ESI Negative All
Total peak number 139,953 153,769 293,722
Average peak number (per published food items) 4,998 5,492 5,245
Peaks with MSn spectra 29,917 23,767 53,684
Peaks with MS2 spectra 29,917 23,767 53,684
Peaks with MS3 spectra 14,024 9,138 23,162
Peaks with compound database hits
(KEGG, KNApSAcK, HMDB, LIPID MAPS, FlavonoidDB were searched with a 5 ppm-mass tolerance)
63,866 64,860 128,726

Update history

2022/09/27 An MS Excel file for converting the retention time between ThingMR and FoodMR/PlantMR is available on the Download page.
2022/04/18 The system was updated to 1.9.0 with improvements below.
  • The compound database search results were updated using the latest data of HMDB, LIPID MAPS, and KNApSAcK.
  • Related peaks with a similar retention time, such as variations of adducts, were represented on the peak information page. The existence of related peaks is also indicated as Rel label in the peak list.
  • The number of samples that contain similar peaks to the peak was added to the peak information.
  • According to the data update mentioned above, we archived the previous data on the download page.
  • On the peak information page, buttons to search similar peaks in FoodMR and ThingMR are added. The retention time of the peak in these external databases was calculated using the acetonitrile concentration.
  • On the peak information page, a button to search the compound databases with a user-specified mass tolerance (in ppm) was added.
2020/04/07 The system was updated to version 1.5.0. Estimation results of N and S atom numbers were attached to the peaks detected in lettuce with positive mode.
- N and S atom numbers can be managed.
- The peak icon was updated for representing the N and S results.
- Unused columns were removed from the peak list.
- Multiple categories can be set and used in the peak search summary panel.
2020/03/26 The system was updated to version 1.4.0. Download functions and MassChroBook are available.
- Pages and menu for downloading were added.
- APIs for downloading were added.
- Modifications of the internal program for better maintenance.
2020/02/27 The system was updated to version 1.3.0.
- The peak icon in the search results was improved to the one with
MS2/MS3 results, DB hits, non-default adducts, and FlavonoidSearch results.
- Neutral loss search function was added.
2020/01/18 The initial version was released with the system version 1.2.0. The data from 28 plant samples were published.