PRODUCTION OF BIOCELLULOSE NANOFIBERS FROM AGRICULTURAL RESIDUES

摘要

In the present preliminary study, we report results for the biocellulose nanofibres production byGluconacetobacter xylinus. Production was examined by utilizing different feedstocks of single sugars and sugarmixtures with compositions similar to the acid hydrolyzates of different agriculture residues. Profiles for cellproliferation, sugar consumption, and the subsequent pH changes were thoroughly analyzed. Highest biocelluloseproduction of 5.65 g/L was achieved in fructose medium with total sugar consumption of 95.57%. Moreover, thehighest production using sugar mixtures was 5.2 g/L, which was achieved in feedstock with composition identicalto the acid hydrolyzate of wheat straws. This represented the highest biocellulose yield of 17.72 g/g sugarscompared to 14.77 g/ g fructose. The lowest production of 1.1 g/L and 1.75 g/L were obtained in xylose andglucose media respectively, while sucrose and arabinose media achieved relatively higher production of 4.7 g/L and4.1 g/L respectively. Results reported in this study demonstrate that agriculture residues might be used as potentialfeedstocks for the biocellulose nanofibres production.