Modified bacterial cellulose

Details Modified bacterial cellulose Modified bacterial cellulose

2005-09-06

2005-09-06

Prats, Francisco (Department: 1651)

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing compound containing saccharide radical

C536S056000, C536S126000, C536S123120

Reissue Patent

active

RE038792

ABSTRACT:
delete-start id="DEL-S-00001" date="20050906" ?This invention provides a bacterial cellulose comprising ribbon-shaped microfibrils having a thickness of 10 to 100 nm and a width of 160 to 1000 nm or a bacterial cellulose comprising ribbon-shaped microfibrils having a thickness of 10 to 100 nm and a width of 50 to 70 nm. The former bacterial cellulose can be produced by culturing cellulose-producing bacteria in a culture medium containing a cell division inhibitor, and the latter can be produced by culturing the bacterium in a culture medium containing an organic reducing agent. The bacterial cellulose is modified from conventional bacterial cellulose in the major axis, and is improved in Young's modulus, etc.delete-end id="DEL-S-00001" ?insert-start id="INS-S-00001" date="20050906" ?This invention provides a bacterial cellulose comprising ribbon-shaped microfibrils having a thickness of 1 to 9 nm and a width of 160 to 1000 nm or a bacterial cellulose comprising ribbon-shaped microfibrils having a thickness of 1 to 9 nm and a width of 50 to 70 nm. The former bacterial cellulose can be produced by culturing cellulose-producing bacteria in a culture medium containing a cell division inhibitor, and the latter can be produced by culturing the bacterium in a culture medium containing an organic reducing agent. The bacterial cellulose is modified from conventional bacterial cellulose in the major axis, and is improved in Young's modulus, etc.insert-end id="INS-S-00001" ?

REFERENCES:
patent: 4742164 (1988-05-01), Iguchi et al.
patent: 4745058 (1988-05-01), Townsley et al.
patent: 4863565 (1989-09-01), Johnson et al.
patent: 6060289 (2000-05-01), Ishihara et al.
patent: 6627419 (2003-09-01), Ishihara et al.
patent: 7-79791 (1995-03-01), None
Chemical Abstracts, vol. 122, No. 25, Jun. 19, 1995, 313074v, Food gel manufacture with acetic acid bacteria in the presence of oxidoreduction adjusting agents, p. 804.
S. Hestrin et al, Nature, Jan. 11, 1947, vol. 159, Synthesis of Cellulose by Resing Cells ofAcetobacter xylinum, pp. 64-65.

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