Title:
酢酸セルロースの分解方法
Document Type and Number:
Japanese Patent JP3605444
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To relatively easily decompose cellulose acetate as a hard-to- decompose material, to be used as e.g. a raw material for cigarette filters or phtographic films, by using Rhizobium bacteria without affecting the natural environment. SOLUTION: A medium is incorporated with cellulose acetate powder 2.5 in degree of substitution and then dispensed into flasks. Next, the weight of cellulose acetate membranes each 1.7 and 2.5 in degree of substitution is measured, the membranes are then packed in nets so as not to be broken, and put into the flasks filled with the medium. Subsequently, the membranes are inoculated with Rhizodium bacteria (e.g. Rhizobium meliloti) followed by conducting a shaking culture at 27 deg.C and at 260rpm; then, the cellulose membranes present weight reduction at 26.8% and 12.1% for the degree of substitution of 1.7 and 2.5, respectively, 21 days after the beginning of the culture; at 50.5% and 27.5%, respectively, 28 days after. Thus, the cellulose acetate as a hard-to-decompose material can be relatively easily decomposed without affecting the natural environment.
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Inventors:
Yoshio Tominaga
Kiyofumi Sakai
Go Morinaga
Koichi Inoue
Kiyofumi Sakai
Go Morinaga
Koichi Inoue
Application Number:
JP19474195A
Publication Date:
December 22, 2004
Filing Date:
July 31, 1995
Export Citation:
Assignee:
Osaka city
Daicel Chemical Industry Co., Ltd.
Daicel Chemical Industry Co., Ltd.
International Classes:
B09B3/00; C12S3/04; C12N1/20; C12R1/41; (IPC1-7): C12N1/20; B09B3/00; C12S3/04
Domestic Patent References:
| JP7289243A | ||||
| JP731451A |
Attorney, Agent or Firm:
Kaoru Furuya
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida
Takahiko Mizobe
Satoshi Furuya
Shinji Mochida