| 摘要 |
THE INVENTION PROVIDES A METHOD OF BIODEGRADING KERATINACEOUS MATERIAL SUCH AS FEATHERS WHEREIN THE METHOD INCLUDES THE STEPS OF (A) COMBINING THE KERATINACEOUS MATERIAL WITH BACILLUS SP. STRAIN KHAYAT OR A MUTANT THEREOF IN A FEATHER BASAL SALT MEDIA; AND (B) INCUBATING THE MIXTURE FROM STEP (A) TO DEGRADE THE KERATINACEOUS MATERIAL. THE AQUEOUS FEATHER BASAL SALT MEDIA USED IN THIS PROCESS INCLUDES A SALT MIXTURE OF 0.05% (W/V) SODIUM CHLORIDE, 0.07% (W/V) POTASSIUM DIHYDROGEN PHOSPHATE, 0.14% (W/V) POTASSIUM HYDROGEN PHOSPHATE, 0.001% (W/V) MAGNESIUM SULPHATE AND 1.0% (W/V) FEATHER AS NITROGEN AND CARBON SOURCES AND ADJUSTED TO pH 7.2. THE BACILLUS SP. STRAIN KHAYAT OR A MUTANT THEREOF IS CAPABLE OF DEGRADING KERATIN AND OBTAINED FROM EITHER AN AXENIC CULTURE, FREEZE-DRIED CULTURE OR PURE CULTURE OF THE SAID MICROORGANISM. THE END-PRODUCT OF FEATHER DEGRADATION CAN BE USED IN THE FEED INDUSTRY AND THE METHOD AS PROVIDED IS SUSTAINABLE, ENVIRONMENTALLY FRIENDLY AND COST-EFFECTIVE. |
