Screening of photosynthetic bacteria from shrimp cultivation and its
potential to inhibit luminescence disease from Vibrio harveyi
Janjira Jomsawat, M.Sc. Student in Biotech., PSU.
Wanna Choorit, Asst. Prof., Inst. of Agricultural Tech., Walailuk U., Nakhon Si Thammarat
Poonsuk Prasertsan, Assoc. Prof., D. of Industrial Biotech., F. of Agro-Industry, PSU.
Kidchakan Supamattaya, Assoc. Prof., D. of Aquatic Science, F. of Natural Resources, PSU.
Corresponding e-mail : cwanna@wu.ac.th
Grant : Graduate School, PSU.
Presented : The 12th Annual Meeting of the Thai Society for Biotechnology "Biotechnology :
Impacts & Trends", 1-3 November 2000, Kanchanaburi, Thailand
Key words : photosynthetic bacteria, screening, shrimp farm, disease, Vibrio harveyi
Two hundred and forty-nine samples of mud and water were taken from shrimp cultivation farm in the South of Thailand. Each sample was cultivated on G5 medium supplemented with 3% NaCl, pH 8.0 under anaerobic and light conditions. They were examined for antimicrobial activity against Vibrio harveyi, and their temperature range of growth. The strain SR15b was selected. It will be used as fish feed and probiotic bacterium against Vibrio harveyi.
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