[Objective] Vibrio parahaemolyticus was chosen as the material to make rabbit anti-V.parahaemolyticus polyclonal antibody,the immuno-gold chromatography assay(IGCA) was used to develop immunogold labeling test strips for detecting V.parahaemolyticus.[Methods] Rabbit anti-V.parahaemolyticus IgG-2 was used to wrap nitrocellulose membrane detection line,goat anti-rabbit IgG was used to wrap control line,and immuno-gold was used to label rabbit anti-V.parahaemolyticus IgG-1 to establish the immuno-gold chromatography assay(IGCA) for detection of V.parahaemolyticus.[Results] Test strip detection lines of positive results along with the control line were all red,test results could be got in only five to fifteen minutes,the minimum detectable amount of this method to V.parahaemolyticus was 3.60×104 cfu/ml,and cross reactions wouldn't occur when detecting common intestinal bacteria like Vibrio alginolyticus,vibrio cholerae,Vibrio damsela,Vibrio metschnikovii,Citrobacter freundii and salmonella etc.The test results were undifferentiated when the test strips were stored at 4℃ for six months,stored at room temperature for three months or stored at 37℃ for one month.[Conclusion] The established test strip assay was simple and rapid during operation,with high sensitivity,strong specificity and good stability,the test results were easy to be observed and judged,and this assay was very suitable for grassroots breeding department application.
展开▼
