conclusions considering the high level of artificial colors found in the samples of this study, preventive measures are essential. results the results showed that several products did not meet the standards. fifty-six out of the 70 (80%) samples examined in the study, namely sunset yellow (60%), tartrazine (57.1%), quinoline yellow (44.28%), azorubine (28.57%), ponceau 4r (8.57%) and allura red...

Se evalúa el efecto de dos colorantes en la esferificación inversa un modelo coctel. obtienen esferas a partir disoluciones alginato sodio, sodio + colorante Sunset yellow y rojo Ponceau 4R, con proporciones 0.6% m/v 1.66% lactato calcio; se pudieron incorporar ambos hasta una concentración 0.15% m/v. Las evidencian comportamiento newtoniano adecuada viscosidad pueden conservarse entre 4 6 ºC d...

in this study, amine functionalized kit-6 silica mesoporous magnetite nanocomposite (nh2-mmnc) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of ponceau 4r, as a toxic dye, from aqueous solutions. the synthesized nanocomposites were characterized by xrd, ft-ir, bet and sem instruments. the effect of various experimental parameters on the dye r...

Built-in instruments are commonly employed in physics experiments. In this case, students usually unaware of the instrument’s fundamental physics. Here we constructed a simple and compact colorimeter. A light-emitting diode (LED) was used as light source. The detector circuit consists photoresistor, resistor, 9-V battery. During experiment, illuminated solution food coloring. transmitted measur...

In this study, amine functionalized Kit-6 silica mesoporous magnetite nanocomposite (NH2-MMNC) was synthesized by chemical methods and used as an efficient and recoverable adsorbent for removal of Ponceau 4R, as a toxic dye, from aqueous solutions. The synthesized nanocomposites were characterized by XRD, FT-IR, BET and SEM instruments. The effect of various experimental parameters on the dye r...

CLINICAL CHEMISTRY. Vol. 26, No. 1, 1980 177 may then be used to make the precipitin lines visible. The stain that seemed to give the best contrast between precipitin lines and membrane background was Procion Brilliant Blue M-RS (Inolex Corp., Glenwood, IL). An aqueous stain stock solution, 1.2 g/L was prepared and membranes placed in a working mixture of stain stock/water/acetic acid/methanol ...

BACKGROUND The total protein content of urine is a good index of renal function, but its determination is unreliable. Protein dye-binding assays are simple, but they characteristically lack a uniform response to different proteins. METHODS We investigated a differential response of the Sigma Microprotein Coomassie Brilliant Blue (CBB) and Pyrogallol Red-molybdate (PRM) protein dye-binding ass...