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ISHS Acta Horticulturae 678: III WOCMAP Congress on Medicinal and Aromatic Plants - Volume 4: Targeted Screening of Medicinal and Aromatic Plants, Economics and Law

ANTIPARASITIC, ANTIBACTERIAL, AND ANTIFUNGAL ACTIVITIES DERIVED FROM A TERMINALIA CATAPPA SOLUTION AGAINST SOME TILAPIA (OREOCHROMIS NILOTICUS) PATHOGENS

Authors:   C. Chitmanat, K. Tongdonmuan, P. Khanom, P. Pachontis, W. Nunsong
Keywords:   antibacterial activity, antiparasitic activity, antifungal activity, Terminalia catappa, medicinal plant, tilapia
Abstract:
Tilapia, Oreochromis niloticus, is one of the most economically important fishery products of Thailand with export viability. Unfortunately, disease losses cause a major problem in the production of farmed tilapia. Most farmers have been using chemicals and antibiotics to treat fish pathogens which leads to the creation of antibiotic resistant pathogens and undesired residues in the fish and in the environment. Food safety is currently a great concern worldwide and Thailandís inspectors are now finding antibiotic residues in exported fish products. The purpose of the present research is to apply the Indian almond, Terminalia catappa, as an alternative to the use of chemicals and antibiotics in the aquaculture industry. Dried leaves of Indian almond were ground and dissolved in water. A variety of concentrations of this solution were used to determine resulting activities against tilapia pathogens. The results indicated that Trichodina, fish ectoparasites, were eradicated at 800 ppm. The growth of two strains of Aeromonas hydrophila was also inhibited at a concentration of 0.5 mg/ml Indian almond leaves upward. In addition, this solution can reduce the fungal infection in tilapia eggs. Research is underway to determine the toxicity of this solution, if any, on tilapia and the isolation of the active ingredients in the Indian almond for fish pathogen treatment.
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