The results showed that the final product had glucomannan content as high as 80%; the production line includes washing-peeling equipment (maximum capacity of 800 kg / day), wet grinding equipment (maximum capacity of 1, 000 kg of bulbs / day), centrifugal separative equipment (maximum capacity of 300 kg tubers / day) and cold drying equipment (maximum capacity of 300 kg bulbs / day) for the whole line maximum capacity of 200 kg raw material / day (8-hour shift).