Figure 3.

X-ray diffractograms of cabbage samples and standards: C—cabbage control (i,o); D—dosage (1,2); i—inner leaves; o—outer leaves; MCC—microcrystalline cellulose; Pct—pectin; Lgn—lignin. (a) Smoothed B-spline diffractograms translated and overlaid to evidence the convolution of MCC, Pct, and Lgn in cabbage samples; (b) smoothed, background-subtracted and normalized diffractograms of MCC, Pct, Lgn, and Ci, along with the typical main peaks of cellulose Iα, Iβ, and amorphous cellulose; (c) normalized cabbage diffractograms together with the main peaks of cellulose Iα, Iβ, amorphous cellulose, and methylcellulose; (d) close-up of the main diffraction peak in cabbage samples, showing a small shift toward pectin’s peak 21.2° of inner leaves and biostimulant-treated D2o leaves. Crystallinity degrees (Xc, %) are presented in (a,c), while all the amorphous deconvoluted peaks are presented as a small table in the left-down corner of (a).