Effect of Nitrofurans and Chlortetracycline on Microorganisms Associated with Shrimp1
AUTOR(ES)
Waters, Melvin E.
RESUMO
Nitrofuran AF-2 displayed greater inhibitory effect than did nitrofuran Z when a mixed bacterial culture, including several proteolytic bacteria, isolated from shrimp was subjected to these compounds in vitro. Nitrofuran Z exhibited greater bactericidal properties than did chlortetracycline in all cultures used. Only 10 μg of nitrofuran AF-2 per ml was sufficient to inhibit the growth of mixed bacteria in nutrient broth, whereas 50 μg of nitrofuran Z per ml was necessary to accomplish the same inhibition. A 50-μg amount of chlortetracycline per ml displayed about the same inhibitory effect as either 10 μg of AF-2 per ml or 20 μg of Z per ml. The isolated proteolytic bacteria showed greater suppression of growth when subjected to AF-2 than when subjected to Z; however, both nitrofurans were effective in preventing growth. The addition of either 1 μg of AF-2 per ml or 5 μg of Z per ml to nutrient broth inhibited the growth of Achromobacter aquarmarinus, whereas chlortetracycline was less effective, requiring about 20 μg to suppress growth to the same degree.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=377605Documentos Relacionados
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