title: Disruption of influenza virus A by diethylether-Tween and tri-N-butyl phosphate-Tween mixtures.
abstract: In search for optimal conditions of influenza virus A/Brazil/78(H1N1) disruption by diethylether-Tween 80 and tri-n-butyl phosphate (TNBP)-Tween 80 mixtures, the following treatments were found suitable: for 120 min at 4 degrees C with 3.3% TNBP and 0.1% Tween 80 or for 120 min at 4 degrees C with diethylether and 0.1% Tween 80 (ratio of diethylether and treated virus material 1:1). Disruption by TNBP appeared more favourable not only because of the convenient performance but also due to the higher antibody-inducing ability of the product obtained. The suggested removal of TNBP from the disruption product by extraction into hexan is easy and reliable. Chemical analysis enabled precise detection of 0.1% TNBP in the "vaccine" product. The hexan-extracted "vaccine" contained less than 0.05% TNBP, a concentration non-toxic for mice.
mesh_terms: D000914:Antibodies, Viral / Q000276:immunology; D006389:Hemagglutinins, Viral / Q000302:isolation & purification; D009980:Influenza A virus / Q000187:drug effects* / Q000276:immunology; D009439:Neuraminidase / Q000302:isolation & purification; D011136:Polysorbates / Q000494:pharmacology*; D014765:Viral Vaccines / Q000276:immunology
chemical_list: D000914:Antibodies, Viral; D006389:Hemagglutinins, Viral; D011136:Polysorbates; D014765:Viral Vaccines; D009439:Neuraminidase