Chemistry: molecular biology and microbiology – Carrier-bound or immobilized enzyme or microbial cell;... – Enzyme or microbial cell is immobilized on or in an organic...
Patent
1994-11-28
1996-08-06
Naff, David M.
Chemistry: molecular biology and microbiology
Carrier-bound or immobilized enzyme or microbial cell;...
Enzyme or microbial cell is immobilized on or in an organic...
435179, 435182, 4352625, 4352831, C12N 1102, C12N 1112, C12M 140, B09B 300
Patent
active
055433090
ABSTRACT:
A carrier is prepared containing bacteria and/or enzymes for degrading sewage sludge. The carrier can be in the form of a gel containing coloring matter and optionally a deodorant, or in the form of a core for a roll of toilet tissue or a roll of towels. In a preferred embodiment, the carrier is in the form of a tube that is used as a core for a roll of toilet tissue. The tube is formed from at least two layers made from cellulose bonded together with a water soluble bonding agent. Enzymes and/or bacteria can be in a slurry of cellulose pulp used to make the core, in the bonding agent, or in a coating or strip on an inside and/or outside layer. The tube contains a plurality of sets of circumferential perforations that enable, after removing toilet tissue, readily breaking the tube into a plurality of small pieces that can be flushed down a toilet bowl into a sewage system where the pieces disintegrate and release the enzymes and/or bacteria. The tube may also contain a plurality of holes that allow an aqueous medium to readily seep between the layers to assist in disintegration.
REFERENCES:
patent: 3242055 (1966-03-01), De Lucia
patent: 3767790 (1973-10-01), Guttag
patent: 4006059 (1977-02-01), Butler
patent: 5275943 (1994-01-01), Di Turo
patent: 5284587 (1994-02-01), Wong et al.
Naff David M.
Secrest Thomas W.
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