White rot fungal xylanases for application
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This document discusses white rot fungi and their application in the pulp and paper industry. It begins by defining white rot fungi as basidiomycetes capable of degrading lignin. It then lists and provides images of various white rot fungi species. The document explains that white rot fungi produce non-specific enzymes like laccase and peroxidases that are exploited in pulp and paper processing to separate cellulose fibers from lignin through mechanical or chemical pulping. Specifically, white rot fungi can reduce energy usage and environmental impact of bleaching processes in pulp mills. Examples of white rot fungi used include Ceriporiopsis subvermispora and Pycnoporus cinnabarinus. In conclusion, white rot fungi have benefits for both
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![WHAT ARE WHITE ROT FUNGI….ˀ
• They are also called white-decay
fungus.
• They belongs to Basidiomycetes.
• They are capable of degrading the
lignin component of lignocellulose
substates.
• But the brown rot fungi concentrate
in cellulose degradation.
• White rot fungi produces enzymes
like laccase, manganese peroxide
and lignin peroxidase [all non-
specific].
© mycosphere.org](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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White rot fungal xylanases for application
- 1. Amrita School of Agricultural Sciences (Amrita Vishwa Vidyapeetham) Arasamapalayam (Po), Coimbatore - 642109 STUDENT Mr. SV MAHESH ID. No. CB.AG.U4AGR19033 COURSE TEACHER Dr. PARTHASARATHY S Asst. Professor (Plant Pathology) WHITE-ROT FUNGAL XYLANASES FOR APPLICATION IN PULPAND PAPER INDUSTRY
- 2. WHAT ARE WHITE ROT FUNGI….ˀ • They are also called white-decay fungus. • They belongs to Basidiomycetes. • They are capable of degrading the lignin component of lignocellulose substates. • But the brown rot fungi concentrate in cellulose degradation. • White rot fungi produces enzymes like laccase, manganese peroxide and lignin peroxidase [all non- specific]. © mycosphere.org
- 3. SOME ROT FUNGI…. BROWN ROT FUNGI ©en.wikipedia.org SOFT ROT FUNGI ©researchgate.net DRY ROT FUNGI ©en.wikipedia.org WHITE ROT FUNGI ©phys.org
- 4. Some of the white rot fungi…. ©en.wikipidia.org Serpula lacrymans ©en.Wikipedia.org Trametes versicolor
- 5. Schizophyllum commune Fomes fomentarius ©pinterest.com ©en.wikipedia.org
- 6. Pleurotus ostreatus Fomitopsis pinicola ©123rf.com ©en.wikipedia.com
- 7. Laetiporus sulphureus Coniophora puteana ©monaconatureencyclopedia.com ©alamystock.com
- 8. Kretzschmaria deusta Ganoderma applanatum ©first-nature.com ©first-nature.com
- 9. Pleurotus ostreatus Pleurotus pulmonarius ©mushroomexpert.com ©en.wikipedia.com
- 10. Armillaria mellea Pycnoporus cinnabarinus ©mykoweb.com ©en.wikipedia.com
- 11. Pleurotus eryngii Phaeolus schweinitzii ©fungi.com ©mykoweb.com
- 12. Armillaria ostoyae Phellinus pini ©first-nature.com ©en.wikipedia.com
- 13. Hypholoma fasciculare Fibroporia vaillantii ©en.wikipedia.com©en.wikipedia.com
- 14. Pleurotus cornucopiae Pleurotus citrinopileatus ©first-nature.com ©amazon.com
- 15. Xylaria polymorpha Armillaria gallica ©first-nature.com ©en.wikipedia.com
- 16. Armillaria tabescens Ceratocystis fagacearum ©en.wikipedia.com ©canr.msu.edu
- 17. Pleurotus dryinus Ceratocystis platani ©first-nature.com ©commons.wikipedia.com
- 18. Major pulp industry in world and India
- 19. Application of white-rot fungi in pulp industry…. • Pulp industry is one of the major contribution to national income of a country. • The usual nature of white-rot fungi especially the Xylanases is exploited in pulp and paper processing including pulping, bleaching, and even effluent treatment. • The key feature exploited is the non-specificity of enzymes like laccase, manganese peroxide and lignin peroxidase. • During the process, separate the cellulose fibers from lignin and this is done by mechanical or chemical methods. • In mechanical pulping, the fibers are separated by stone grinding and the pulps are refiner and the pulps are usually bleached by using hydrogen peroxide. • In chemical pulping, lignin is solubilized by chemicals resulting in an brown residue which must be eliminated to manufacture white paper. • TCF [totally chlorine-free] evolved due less efficiency of chlorine bleaching.
- 20. • The white-rot fungi not only reduce energy consumption in the process, but can also reduce environmental impact of traditional pulping process. • One of the widely used white-rot fungi is Ceriporiopsis subvermispora. ©inaturalist.org ©jgi.doe.gov
- 22. • But the major disadvantage of TCF bleaching is that in kraft pulps it creates increased lipophilic deposits (named pitch). • But on the other hand, wood treatment with white-rot fungi efficiently degrades those pitch residues. • So, they have both qualities of biopulping and biodepitching. • The Pycnoporus cinnabarinus produces Lacccase only as ligninolytic enzyme. ©Needpix.com
- 23. REFERENCES • Application of white-rot fungi in Transformation, Detoxification, or Revalorization of Agriculture wastes: Role of Laccase in the processes, M Jurado, AT Martinèz and MJ Martinez, Centro de Investigaciones Biolgicas, Mandrid, Spain MCN Saparrat, Universidad Nacional de La Plata (UNLP). • googlescholer.com • researchgate.net
- 24. THANK YOU