Date Received: 27-12-2024 / Date Accepted: 20-05-2025 / Date Published: 30-05-2025
This study evaluated the antibacterial activity of extracts from different parts of the moringa plant against pathogenic bacteria in whiteleg shrimp. A total of 9 bacterial strains were successfully isolated and identified, including Vibrio parahaemolyticus (n = 3) from shrimp infected with acute hepatopancreatic necrosis, V. alginolyticus (n = 3) from shrimp infected with white feces syndrome, and V. harveyi (n = 3) from luminous infected shrimp. From 500g of each part, 278ml of immature fruit extract, 170ml of fresh leaf extract, and 250ml of seed oil were obtained. The results from the inhibition assessment using the disk diffusion method showed that the inhibition zones for the three bacterial species ranged from 12.8 to 13.4mm for leaf extracts and 14.7 to 15.7mm for immature fruit extracts, while the seed oil did not produce any inhibition zones. The fresh leaf extract completely inhibited (MBC) V. parahaemolyticus at a dilution ratio of 1:16 (3.13% extract) and for the two species V. alginolyticus and V. harveyi at 1:64 (0.78% extract). The immature fruit extract achieved an MBC value of 1:32 (1.56% extract) against V. parahaemolyticus and 1:128 (0.39% extract) against the other two bacterial species. The study results demonstrate the potential application of fresh extracts from moringa leaves and pods for controlling bacterial infections in shrimp..
