Extended Data Fig. 8: GIFTED spin-locking spectra.
From: Wood cellulose microfibrils have a 24-chain core–shell nanostructure in seed plants
\({T}_{1\rho }\)-edited 13C{1H} CPMAS (GIFTED) spectra of spruce (a) and maple (b) at various spin-locking durations. Spectra on the right-hand side were scaled up to match the intensity at 89.0 ppm to compare relative intensity difference. Spectral components of cellulose are labelled in green, and non-cellulose labelled in orange. The peak positions of hemicellulose in the region of 50–105 ppm are indicated by orange arrows. Different intensity attenuations were observed, especially the non-cellulose spectral components. (TC: total cellulose, CC: crystalline cellulose, SC: semidisordered cellulose, H: hemicellulose, L: lignin).
