Hydrothermal Pretreatment of Date Palm (Phoenix dactylifera L.) Leaflets and Rachis to Enhance Enzymatic Digestibility and Bioethanol Potential

Figure 2

Scanning electron micrographs of untreated and pretreated date palm leaflets and rachis. (a) Raw leaflets. (b) and (c) Leaflets treated at 180°C and 210°C, respectively. (d) Raw rachis. (e) and (f) Rachis treated at 180°C and 210°C, respectively. (g) Magnified red circle area in (e). Red arrows represent crystallites in (e).

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