Abstract

Bacterial strains which had ability in degrading cellulose were isolated and selected and then used for producing bioproducts to treat litchee postharvest wastes. From 300 samples of natural litchee compost, 98 bacterial strains were isolated. Of which, bacterial strains V19 and V98 were determined dominant cellulase, amylase, and protease enzymatic activities. Both V19 and V98 indicated the significant resistance to antibiotics upto 1000 mg/l culture media. These two strains showed significant growth and extracellular enzymatic in different pH and temperature of culture media. In case of pot experiment, litchee postharvest wastes were decomposed at level 57 - 59% by being applied V19 or V98 bio-product after 35 days (control was 45%). Based on characteristics of culture, morphological, physiological, biochemical, and 16S rRNA nucleotide sequences, V19 was identifield as Bacillus cereus, V98 was Bacillus toyonensis.

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