SAXS of gliadin was performed on a Xeuss SAXS/WAXS System (Xenocs, Sassenage, France).
The X-ray source consists of a 30 W CuK α (λ=1.54 Å) microfocus tube with an ultra-low divergence mirror optics (GeniX, Sassenage, France) and a Pilatus 300K, 20 Hz hybrid pixel detector (DECTRIS, Baden-Deatwil, Switzerland). The scattering curves were normalised by the integrated intensity incident on the sample, exposure time, sample thickness, transmission and background. The focus of the sample was 1 mm². The samples were measured in a 1 mm flowthrough Kapton capillary (Goodfellow GmbH, Bad Nauheim, Germany) placed in a Linkam stage (Linkam Scientific, Tadworth, UK) at 10 °C. The sample-to-detector distance was for SAXS 2772 mm, calibrated with silver behenate. The range of the scattering vector was around q=0.7 -0.13 nm -1 at a scattering angle of 2θ. The absolute calibration of the scattering data was done with glassy carbon type 2 [11] . The scattered intensity I(q)=N•I(0)•(Δρ) 2 •V 2 •P(q) •S(q) is dependent on: the incident intensity I(0), the scattering volume of the colloid V, the electron density difference Δρ between particle and solvent and the particle form factor P(q). The particle structure factor S(q) equals to one for dilute systems.
The X-ray source consists of a 30 W CuK α (λ=1.54 Å) microfocus tube with an ultra-low divergence mirror optics (GeniX, Sassenage, France) and a Pilatus 300K, 20 Hz hybrid pixel detector (DECTRIS, Baden-Deatwil, Switzerland). The scattering curves were normalised by the integrated intensity incident on the sample, exposure time, sample thickness, transmission and background. The focus of the sample was 1 mm². The samples were measured in a 1 mm flowthrough Kapton capillary (Goodfellow GmbH, Bad Nauheim, Germany) placed in a Linkam stage (Linkam Scientific, Tadworth, UK) at 10 °C. The sample-to-detector distance was for SAXS 2772 mm, calibrated with silver behenate. The range of the scattering vector was around q=0.7 -0.13 nm -1 at a scattering angle of 2θ. The absolute calibration of the scattering data was done with glassy carbon type 2 [11] . The scattered intensity I(q)=N•I(0)•(Δρ) 2 •V 2 •P(q) •S(q) is dependent on: the incident intensity I(0), the scattering volume of the colloid V, the electron density difference Δρ between particle and solvent and the particle form factor P(q). The particle structure factor S(q) equals to one for dilute systems.