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Author: search.filters.author.Kerdpiboon, S.Subject: search.filters.subject.Acetobacter xylinum

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    Item type:Publication,
    Luffa sponge offsets the negative effects of aeration on bacterial cellulose production
    (2016-12-01)
    Krusong, W.
    ;
    Kerdpiboon, S.
    ;
    Pornpukdeewattana, S.
    ;
    Jindaprasert, A.
    Aims: To offset the negative effects of aeration on bacterial cellulose (BC) production by acetic acid bacteria using enmeshed cellulose microfibrils (CM) on luffa sponge matrices (LSM). Methods and Results: The CM were enmeshed on LSM (LSM-CM). The optimal amount of LSM-CM was determined for BC production under aerated conditions. Without LSM-CM, no BC was produced in seven out of nine production cycles at the highest aeration rate (9 l min<sup>−1</sup>). However, with 0·5% LSM-CM and an aeration rate of 3 l min<sup>−1</sup>, a satisfactory oxygen transfer coefficient was achieved, and also a good yield of BC (5·24 g l<sup>−1</sup>). Moreover, the LSM-CM was able to be recycled through nine consecutive BC production cycles. The highest BC yields (from 5·8 ± 0·4 to 6·6 ± 0·4 g l<sup>−1</sup>) were associated with high bacterial biomass and this was confirmed by scanning electron microscopy. Conclusions: We confirm that LSM-CM works well as a starter. Microenvironments low in dissolved oxygen within the matrices of LSM-CM are important for BC production under aeration conditions. Significance and Impact of the Study: The LSM-CM provides a microenvironment which offsets the negative effects of aeration on BC production. A sustainable, economic process for mass BC production is described using recycled LSM-CM with aeration.