Claims
- 1. A process for bleaching kraft pulp which comprises treating said kraft pulp with extracellular growth medium from a fermentation of phanerochaete chrysosporium consisting essentially of rLDM.TM. 1 through 6, and other ligninolytic enzymes.
- 2. A process, according to claim 1, wherein said Phanerochaete chrysosporium is the novel mutant strain designated SC26, having the identifying characteristics of NRRL 15978.
- 3. A process for bleaching kraft pulp which comprises treating said kraft pulp with Ligninolytic Mixture.TM. from a fermentation of Phanerochaete chrysosporium consisting essentially of rLDM.TM. 1 through 6, and other ligninolytic enzymes.
- 4. A process, according to claim 3, wherein said Phanerochaete chrysosporium is the novel mutant strain designated SC26, having the identifying characteristics of NRRL 15978.
- 5. A process for bleaching kraft pulp which comprises treating said kraft pulp with an rLDM.TM. selected from the group consisting of rLDM.TM. 1, rLDM.TM. 2, rLDM.TM. 3, rLDM.TM. 4, rLDM.TM. 5, and rLDM.TM. 6, or mixtures thereof.
- 6. A process for bleaching kraft pulp which comprises treating said kraft pulp with a mixture comprising one or more of the following rLDM.TM. 1 through 6, individually or a mixture thereof; Ligninolytic Mixture.TM. from a fermentation of Phanerochaete chrysosporium comprising RLDM.TM. 1 through 6, and other ligninolytic enzymes; and extracellular growth medium from a fermentation of Phanerochaete chrysosporium consisting essentially of RLKM.TM. 1 through 6, and other ligninolytic enzymes.
- 7. A process, according to claim 6, wherein said Phanerochaete chrysosporium is the novel mutant strain designated SC26, having the identifying characteristics of NRRL 15978.
- 8. A process, according to claim 1, wherein the extracellular growth medium from a fermentation of Phanerochaete chrysosporium is added to kraft pulp which is in about 2 .mu.M to about 10 mM H.sub.2 O.sub.2, buffered at about pH 2 to about pH 7 and has a consistency of about 0.01% to about 20%; the resulting pulp slurry is then shaken at about 15.degree. C. about 50.degree. C. for about 2 min to about 48 hr; decanted; about 0.01 to about 5 M of an alkaline solution is added; the resulting slurry is incubated at about 5.degree. C. to about 100.degree. C. for about 2 min to about 48 hr; decanted; and washed in water to obtain bleached kraft pulp.
- 9. A process, according to claim 3 wherein the Ligninolytic Mixture.TM. from a fermentation of Phanerochaete chrysosporium is added to kraft pulp which is in about 2 .mu.m to about 10 mM H.sub.2 O.sub.2, buffered at about pH 2 to about pH 7 and has a consistency of about 0.01% to about 20%; the resulting pulp slurry is then shaken at about 15.degree. C. to about 50.degree. C. for about 2 min to about 48 hr; decanted; about 0.01 to about 5 M of an alkaline solution is added; the resulting slurry is incubated at about 5.degree. C. to about 100.degree. C. for about 2 min about 48 hr; decanted; and washed in water to obtain bleached kraft pulp.
- 10. A process, according to claim 3, wherein the Ligninolytic Mixture.TM. from a fermentation of Phanerochaete chyrysosporium is added to kraft pulp which is in 400 .mu.M H.sub.2 O.sub.2, buffered at about pH 4.5, and has a consistency of about 3%; the resulting pulp slurry is then shaken at about 39.degree. C. for about 12 hr; decanted; about 1 M NaOH is added; the slurry is incubated at about 65.degree. C. for 60 min; decanted; and washed in water to obtain bleached kraft pulp.
- 11. A process, according to claim 1, wherein about 10 to about 500 .mu.M MnSO.sub.4 is added with the extracellular growth medium.
- 12. A process, according to claim 2, wherein about 10 to about 500 .mu.M MnSO.sub.4 is added with the extracellular growth medium.
- 13. A process, according to claim 3, wherein about 10 to about 500 .mu.M MnSO.sub.4 is added with the Ligninolytic Mixture.TM..
- 14. A process, according to claim 4, wherein about 10 to about 500 .mu.M MnSO.sub.4 is added with the Ligninolytic Mixture.TM..
- 15. A process, according to claim 13, wherein the concentration of MnSO.sub.4 is about 100 .mu.M.
- 16. A process, according to claim 14, wherein the concentration of MnSO.sub.4 is about 100 .mu.M.
- 17. A process, according to claim 8, wherein said Phanerochaete chrysosporium is the novel mutant strain SC26, having the identifying characteristics of NRRL 15978.
- 18. A process, according to claim 9, wherein said Phanerochaete chrysosporium is the novel mutant strain SC26, having the identifying characteristics of NRRL 15978.
- 19. A process, according to claim 10, wherein said Phanerochaete chrysosporium is the novel mutant strain SC26, having the identifying characteristics of NRRL 15978.
CROSS REFERENCE TO A RELATED APPLICATION
This is a continuation-in-part of my copending application Ser. No. 755,243, filed on July 15, 1985, now abandoned.
Non-Patent Literature Citations (2)
Entry |
Alberti, B. N. and Klibanov, A. M. (1981) "Enzymatic Removal of Dissolved Aromatics from Industrial Aqueous Effluents" Biotechnology and Bioengineering Symp. 11:373-379. |
Kirk, T. K. and Chang, H-M., (1981) "Potential Applications of Bio-Ligninolytic Systems" Enzyme Microb. Technol. 3:189-196. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
755243 |
Jul 1985 |
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