Karakteristik Karboksimetil Selulosa Dari Onggok Singkong Pada Variasi Konsentrasi Natrium Hidroksida Dan Asam Trikloroasetat

N.P. Mega Triasswari (Universitas Udayana)
I W. Arnata (Universitas Udayana)
I.W.G. Sedana Yoga (Universitas Udayana)

JURNAL REKAYASA DAN MANAJEMEN AGROINDUSTRI
Vol 10 No 3 (2022): September

Onggok is tapioca solid waste that contains high cellulose reach 15% to 30% but has not been used appropriately. This study aimed to determine the concentration of NaOH and TCA in producing the best CMC characteristics of onggok. The study used a factorial randomized block design. The first factor was the concentration of NaOH (15%; 30%; and 45%), and the second factor was the concentration of TCA (10%; 20%; and 30%). The observed variable included degree of substitution, yield, water content, NaCl content, and purity of CMC. The results showed that the concentration of NaOH and TCA significantly affected the degree of substitution, yield, water content, viscosity, and purity of CMC. The concentrations of 45% NaOH and 30% TCA produced the best CMC characteristics with yield, moisture content, degree of substitution, viscosity, and CMC purity of 1.13±0.12, 22.86±0.15%, 9.57±0.53%, 170.00±10.00cPs, and 99.14±0.40%, respectively.