Journal
JOURNAL OF BIOSCIENCE AND BIOENGINEERING
Volume 120, Issue 4, Pages 444-449Publisher
SOC BIOSCIENCE BIOENGINEERING JAPAN
DOI: 10.1016/j.jbiosc.2015.02.018
Keywords
Airlift bioreactor; Bacterial cellulose; Water-holding capacity; Young's modulus; Bacterial cellulose membrane; Gluconacetobacter xylinus
Funding
- National Science Council, Taiwan [NSC 94-2214-E-242 -001, NSC 95-2622-E-242-005-CC3]
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In this study, a novel bioreactor for producing bacterial cellulose (BC) is proposed. Traditional BC production uses static culture conditions and produces a gelatinous membrane. The potential for using various types of bioreactor, including a stirred tank, conventional airlift, and modified airlift with a rectangular wire-mesh draft tube, in large-scale production has been investigated. The BC obtained from these bioreactors is fibrous or in pellet form. Our proposed airlift bioreactor produces a membrane-type BC from Gluconacetobacter xylinus, the water-holding capacity of which is greater than that of cellulose types produced using static cultivation methods. The Young's modulus of the product can be manipulated by varying the number of net plates in the modified airlift bioreactor. The BC membrane produced using the proposed bioreactor exhibits potential for practical application. (C) 2015, The Society for Biotechnology, Japan. All rights reserved.
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