2021-02-032021-02-032014-01-011824-8039http://dx.doi.org/10.34944/dspace/5889http://hdl.handle.net/20.500.12613/5907© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence. We present results on the disconnected contributions to three point functions entering in studies of hadron structure. We use Nf = 2+1+1 twisted mass fermions and give a detailed description on the results of the nucleon sigma-terms, isoscalar axial charge and first moments of bare parton distributions for a range of pions masses. In addition we give the s-terms and the computations are performed using QUDA code implemented on GPUS.https://creativecommons.org/licenses/by-nc-sa/3.0/hep-lathep-latArticle2021-02-03