The inactivation of some plant viruses by urea

The Effect of Urea in Counteracting the Influence of Carbohydrates on the pH of dEntal Plaques

“…Received for publication September 14, 1942.2 Concentrated solutions of urea dissolve several kinds of organic material, including coagulated proteins(3,4), and sloughing and necrotic tissue (5, 6). It has been used for the treatment of many types of infected wounds without producing any injurious effect on the tissue, even when applied in saturated solution or in crystal form for periods of a week…”

Surface Active Agents and Their Application in Bacteriology

“…Growth retardation and inhibition may, however,. occur at concentrations of surface active agent which have little or no effect on cellular energy production (201).14 A polyoxyalkylene derivative of sorbitan monooleate 15. Although free long chain fatty acids may be inhibitory to many microorganisms, the same compounds esterified or formed into complexes with native serum albumin may have these toxic effects minimized or eradicated and the resultant atoxic compounds may actually enhance the growth of certain bacteria (43).on September 8, 2020 by guest http://mmbr.asm.org/ Downloaded from…”

Physical and Chemical Properties of Tomato Bushy Stunt Virus and the Strains of Tobacco Mosaic Virus

“…Of these, urea has been the most extensively studied although, as has already been pointed out in a survey of the action of urea on proteins (lo), it is by no means the most powerful. The same changes proceed more rapidly as the concentration of urea or the pH is raised (10,59). There is an immediate reduction in viscosity on mixing virus with urea (30), followed by changes bcd proceeding at comparable rates (10, 64).…”