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Anti-quorum sensing (anti-QS) activity by Amomum tsaoko extract against bioreporter strain CV12472, using agar disk diffusion method. Amomum tsaoko extract (4 mg/ml) and positive control (vanillin, 250 μg/ml) loaded disk are showing colorless, opaque circle. While, negative control (LB broth loaded disk) is showing no inhibition of violacein production around the disk.
