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After the extraction of coconut milk from the disintegrated coconut grating, the spent grating (residue) can be utilized as dietary fiber. The fiber was ground in a disc mill and grinding characteristics were evaluated by calculating work index (0.206kWh/kg) as well as Bond’s (0.065kWh/kg), Kick’s (0.047kWh/kg) and Rittinger’s (0.022kWh/kg) constants. The reduction in the particle size from 1127 to 550μm resulted in increased hydration properties (water holding, water retention, swelling capacity), which may be due to increase in theoretical surface area and total pore volume as well as structural modification. Beyond 550μm, the hydration properties were found to decrease with decrease in particle size during grinding. The fat absorption capacity was found to increase with decrease in particle size. The study of microstructures revealed that the grinding operation resulted in rupture of honey comb physical structure fiber …