Low Cost Production of Bacterial Cellulose from Food Processing Residues

Tadashi Takahashi, Junji Ichita, Yoji Kato
2008 Transactions of the Materials Research Society of Japan  
Apple pomace and soy pulp (okara) were discharged from food processing companies in Aomori Prefecture, and the additional value for utilization of these residues has been requested for the long time. It was known that the cellulose produced by some strains of bacteria, the cellulose was called Bacterial Cellulose (BC). However, the costs of production were high, so the utilization of the BC cannot become widespread. In this study, we investigated the conditions to produce the BC at low-cost,
more » ... BC at low-cost, and the following five experiments were carried out; 1) screening of BC producers, 2) production of the BC by using the commercial reagents at low-cost, 3) screening of the commercial crude cellulase suitable for apple pomace, 4) production of the BC by using the saccharified solutions of apple pomace, and 5) production of the BC by using the saccharified solutions of apple pomace and okara. As results, strains of Gluconacetobacter xylinus NBRC-16682 and NBRC-16644 with high productivity and NBRC-13693 with good productivity at lower pH area were selected. The range of optimized pH condition was from 5 to 7. The BC would be produced from the apple pomace and the okara without the nitrogen source.
doi:10.14723/tmrsj.33.1177 fatcat:e7na7satarbshfv7yhsb5lhsqm