Figure 4
From: Melanin is a plenteous bioactive phenolic compound in date fruits (Phoenix dactylifera L.)

Date fruit melanin particle characteristics, (a) Scanning electron microscopic (SEM) Images of melanin particles at different magnification, (b) Sorption isotherm, (c) Relative Barret-Joyner Halender (BJH) pore size calculated from the sorption isotherm, (d) X-ray diffraction (XRD) profile showing the amorphous nature of the melanin. The crystalline components are artifacts from the sample preparation.