Abstract
The antibacterial activity of herbal extracts to Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease in whiteleg shrimp (Litopenaeus vannamei) was studied and carried out in the School of Agriculture and Aquaculture, Tra Vinh University. The results showed that the inhibition zone of Muntingia calaburaleaf extract with ethanol 70% was 18.00 ± 0.00mm, Muntingia calabura leaf extract with ethanol 90% was 17.33 ± 0.58 mm and Muntingia calabura fresh leaf extract was 13.00 ± 0.00 mm. Minimum inhibitory concentration (MIC) of Muntingia calabura leaf extract with ethanol 70% and 90% were 5.120 mg/L, 10.240 mg/L. MIC value of Al lium cepa extract with ethanol 70% and 90% were 40.960 mg/L, Physalis angulata extract with ethanol 70% and 90% were 81.920 mg/L. The results showed that the antimicrobial activity was highest in the Muntingiacalabura leaf extract and lowest in Physalis angulata extract.
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