The agonist-receptor-transducer model of D. Ennis is applied to beverage formulations sweetened with high fructose corn syrup, sucralose, and other high-potency sweeteners, confirming the utility of the model, and supports the growing volume of evidence for multiple binding sites on the sweetness receptor. The model is further simplified to require less parameters for other sweetener blend systems whenever potency information is available for the single sweeteners.
Laboratory and field tests demonstrated that 2,2-dibromo-3-nitrilopropionamide was an effective slimicide for use in papermaking systems and cooling towers. It was also effective as a bactericide for soluble oil emulsions. Acute toxicity tests showed that its hydrolysis at
p
H 9 and 23 C yielded products that were relatively nonhazardous to fathead minnows.
SCOTT, CHARLES R. (The Dow Chemical Company, Midland, Mich.) AND PAUL A. WOLF. The antibacterial activity of a series of quaternaries prepared from hexamethylenetetramine and halohydrocarbons. Appl. Microbiol. 10:211-216. 1962.-A series of quaternaries prepared from hexamethylenetetramine and halohydrocarbons are shown to possess antimicrobial activity which depends upon the slow release of formaldehyde over a wide pH range. The rate of release appears to depend upon the halohydrocarbon moiety to a large extent. Toxicological studies show that these products can be used safely as industrial preservatives for aqueous emulsions such as soluble oils and latex systems.
Laboratory and field tests demonstrated that 2, 2-dibromo-3-nitrilopropionamide was an effective slimicide for use in papermaking systems and cooling towers. It was also effective as a bactericide for soluble oil emulsions. Acute toxicity tests showed that its hydrolysis at pH 9 and 23 C yielded products that were relatively nonhazardous to fathead minnows. The purpose of this paper is to present new information about the use of 2,2-dibromo-3nitrilopropionamide (DBNPA) as an industrial slimicide. Included are its chemical, physical, toxicological, and antimicrobial properties, as well as efficacy under conditions of use. In 1947, Nolan and Hechenbleikner (U.S. patent no. 2,419,888) cited the use of bromoacetamides to protect seeds and seedlings from soil-borne organisms which cause seed rot, seedling blight, and damping off. Their patent mentions the fungal diseases caused by Pythium, Rhizoctonia, and Fusarium.
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