At 0.5 hr and 2 hr after dosing, most radiolabel was found in the stomach, the gastrointestinal tract, liver, kidneys and bladder, with smaller amounts being distributed throughout the rest of the body. * Report new side effects to us by sending email to foodchemmis08@foodchem.cn. ... As part of the safety testing, studies were conducted to evaluate the absorption, distribution, pharmacokinetics, metabolism and excretion of neotame in laboratory rats and dogs. After an overnight fast, the men ingested (14)C-neotame (purity, 98.6-99.8%) in 60 mL of water, followed immediately by 180 mL of water to rinse the dosing vessel, thus representing a total volume of 240 mL. 2003 Oct] After intravenous administration, approximately 40-43% of the radiolabel was excreted in the urine and the remainder in the feces, suggesting excretion in the bile and/or gastrointestinal secretion. approximately 4%) of radiolabel excreted in the urine and bile after an oral bolus dose of (14)C de-esterified neotame was much less than that recovered after an identical dose of (14)C neotame. [6][1], The Center for Science in the Public Interest ranks neotame as safe. Rats were killed 48 hr after dosing, the carcasses solubilized and radiolabel determined. These data suggest that a proportion of the neotame dose was absorbed intact and subsequently hydrolysed to de-esterified neotame. The major metabolite found in urine after 48 hr was de-esterified neotame, independent of the route of administration or the dose. There was a rapid decline over the first 4 hr, with plasma concentrations below the level of detection from 4 hr after dosing. Aspartame's modern successor, Neotame, is based on the aspartame formula and raises similar concerns. ... Neotame was rapidly eliminated with a half-life ranging from 0.61 hr to 0.75 hr. Neotame is milled to suitable size. By 24 hr after dosing, only very small amounts remained in the animal and there was no evidence of accumulation in any tissue. (14)C-neotame in an aqueous solution was administered as a single oral dose of 18.75 mg (approximately 0.25 mg/kg bw) to seven healthy men (median age, 23 years). L-phenylalanine, N-(3,3-dimethylbutyl)-l-alpha-aspartyl-, 2-methyl Ester, 35. WHO/FAO: Expert Committee on Food Additives. Blood was taken before dosing and at predetermined times up to 168 hr after dosing. Mean plasma concentrations of neotame peaked at 0.4 hr ... and declined with a half-life of 0.6 hr. (s)-3-((3,3-dimethylbutyl)amino)-4-(((s)-1-methoxy-1-oxo-3-phenylpropan-2-yl)amino)-4-oxobutanoic Acid, 4. For comparison, acesulfame K, cyclamate and saccharin reach their maximum sweetness at 11.6 SE%, 11.3 SE% and 9 SE%, respectively. /de-Esterified neotame/, Aikens P, et al; Toxicologist 78 (1-S): 207 (2004). The major radioactive component detected in feces was de-esterified neotame (52.5% of the administered dose). Healthy men (mean age + or - standard deviation (SD), 28 + or - 6 years) were each given a single dose of neotame in solution at 0.10, 0.25 or 0.50 mg/kg bw (n =7, 6, and 6 men per dose, respectively), after an overnight fast. Receptor activity toward the artificial sweeteners aspartame and neotame depends on residues in the amino terminal domain of human T1R2. Neotame has 2 stereocenters and 4 stereoisomers. Of the 74 aspartame industry-sponsored studies, all 74 (100%) claimed that no problems were found with aspartame. It enhances original food flavors.It can be used alone, but is often mixed with other sweeteners to increase their individual sweetness (i.e. Possible long-term side effects. However, the effects of neotame may be even worse because it includes 3-dimethylbutyl—one of the world’s most hazardous chemicals, according to the Environmental Protection Agency (EPA). At 15 °C the solubility of neotame is 10.6 g/kg in water and 43.6 g/kg in ethyl acetate. Means of 34.3% and 63.7% of the radiolabel were eliminated in the urine and feces, respectively, and excretion was essentially complete by 96 hr after dosing. Caffeine: Supply chain upgrade boosts Foochem’s service capabilities... Plant Protein & Natural Blue Pigment- Spirulina Blue... Neotame Wholesale Price, Price Trend of Neotame. By mass, it is 8000 times sweeter than sucrose. Other metabolites detected included N-(3, 3 dimethylbutyl)- L aspartic acid (in rats and dogs about 2% of the dose) and a beta-glucuronide conjugate of 3, 3-dimethylbutanoic acid (in rats and dogs about 5% of the dose). Rats were individually housed in metabolism cages and urine and feces were collected at intervals for 72 hr after dosing. Leave a reply. saccharin). Healthy men (mean age + or - standard deviation (SD), 28 + or - 6 years) were each given a single dose of neotame in solution at 0.10, 0.25 or 0.50 mg/kg bw (n =7, 6, and 6 men per dose, respectively), after an overnight fast. [2], In 2002, FDA approved it as a non-nutritive sweetener and flavor enhancer within United States in foods generally, except meat and poultry. Basic residues in site 1 and acidic residues in site 2 were essential for positive responses from each assay. All metabolites of neotame present at 1% or greater of the dose have been shown to occur in the species used in safety studies, confirming the safety of these metabolites. 2. Neotame is especially stable as a dry powder at room temperature and humidity even if mixed with e.g. Samples of blood and specified tissues were taken from all animals at termination, and the amount of radiolabel in each specimen was determined. Neotame is widely used as sweetener as it is between 7,000 and 13,000 times sweeter than sucrose. [2], Neotame is formally a secondary amine of 3,3-dimethylbutanal and aspartame. There were no sex-specific differences in plasma concentrations of neotame or de-esterified neotame. Unchanged neotame was not detected in the feces after any dose or route of administration. Maximum concentrations of de-esterified neotame equivalents were 0.066 ug/mL plasma in males and 0.051 ug/mL plasma in females. Try The Analyst™. Peak concentration (Cmax) and area under the curve of concentration-time at 24 hr (AUC0-24) for total radiolabel were lower in females than in males, but increased proportionally in both sexes with increasing oral dose.