PROCESS FOR PRODUCING HOLLOW BODIES FROM MICROBIAL CELLULOSE

摘要

A process for producing a hollow body made from microbial cellulose, or a precursor of a hollow body made from microbial cellulose, comprising the following steps: a) the contacting of the surface of a template which is a cast of the cavity of the hollow body to be produced and the inner walls of the cavity with a mixture supply comprising a liquid culture medium and a cellulose-forming microorganism, b) the interruption of the contact between the template and the mixture supply, leaving a liquid film comprising the liquid culture medium and the microorganism on the surface of the template, c) the contacting of liquid film with an oxygenous atmosphere and the formation of microbial cellulose in and/or on the liquid film, d) the contacting of the cellulose obtained in step c) with the mixture supply, e) the interruption of the contact between the cellulose and the mixture supply, leaving a liquid film comprising the liquid culture medium and the microorganism on the surface of the cellulose, f) the contacting of the liquid film with an oxygenous atmosphere and the formation of microbial cellulose in and/or on the liquid film, the sequence of steps d), e) and f) optionally being repeated once or more than once, g) optionally the separation of the microbial cellulose from the template and hollow body made from microbial cellulose which is obtainable by the process.