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Microcrystalline cellulose (MCC) powders extracted from banana stem, rice straws, water hyacinth and papyrus reeds were investigated for their physicochemical properties. Preparation of the MCC was carried out using the alkali hydrolysis process followed by further treatment using peracetic acid. The lignocellulosic biomasses were first treated with aqueous sodium hydroxide to remove lignin and hemicelluloses followed by further treatment with a solution of peracetic acid at 80 0 C for 2 hours to remove residual lignin and hemicellulose. The obtained cellulose was then bleached with 20% hydrogen peroxide to whiten the products. Further treatment of cellulose with 2.5N hydrochloric acid converted it into microcrystalline cellulose. MCC from rice straws was modified with citric acid and its characteristics compared to unmodified cellulose. Physical characteristics of the microcrystalline cellulose were determined by obtaining the bulk densities, tapped densities, Carr's index, Hausner's ratio and wettability. Further characterization was done using FTIR spectrophotometer, Differential Scanning Calorimeter, Thermal Gravimetric Analysis and Scanning Electron Microscope (SEM). Apart from the SEM micrographs, MCC parameters of the four biomasses determined were

Comparison of Physicochemical Characteristics of Microcrystalline Cellulose from Four Abundant Kenyan Biomasses