Extração de celulose e fracionamento da parede celular vegetal do cocos nucifera L.

Abstract

This work consists in the utilization of shells that correspond to the mesocarp rich in lignocellulosic fibers of Cocos nucifera L. for obtaining cellulose and with this make feasible the utilization of this agroindustrial residue by value aggregation. To this were done extractions of cellulose fibers of dried coconut and unripe coconut and the fragmentation of the cell wall. The shell residues of the mesocarp of both coconuts proved to be a great potential as alternative source to cellulose production, showing the same percentage of cellulose content that to the unripe coconut varied between 32,2% (thirty-two point two percent) and 28% (twenty-eight percent) respectively, while to the dried coconut varied between 32,2% (thirty-two point two percent) and 28,2% (twenty-eight point two percent) respectively, treated with NaOH 4M (hot) and the wall fragmentation that did not have percentage variations when compared, pectins varied between 2% (two percent) and 2,6% (two point six percent) respectively and hemicelluloses that varied between 3,3% (three point three percent) and 4% (four percent) respectively. The obtained yield for the samples is quite satisfactory and corroborate with the literature.