Overall, we demon strated that the

Overall, we demon strated that the porous material is reinforced
by the through-length inner surface, and has a porosity gradient
(i.e., low-porosity hoop wall and higher- porosity core part)similar
to many other plants. The study is important for under standing
mechanical properties of luffa sponge and can be useful for
fabrication of new biotemplated and bioinspired foam materials.