The morphologies of the untreated durian rind, holocellulose and cellulose were characterized using scanning
electron microscope (SEM). The samples were sputter-coated with gold. Images were taken at an accelerated
voltage of 5 kV. The dimension of the cellulose after ground with grinder and sieved with test sieve (Retsch, AS 200
digit, Germany) in between 250 μm and 125 μm was calculated using stereo microscope (Olympus, Olympus
SZX12-CCD, USA). The length and diameter of 70 cellulose fibers were selected randomly and measured.