Development of a Colloidal Gold Immunochromatographic Strip for the One-Step Evaluation of the Total Content of Rhein and Aloe-Emodin in Rhubarb

Figure 6

CGIC strip specificity tests of some analogues. Each standard solution was diluted in distilled water at a concentration of 5000 ng mL⁻¹. The negative control was distilled water, while the positive control was rhein at a concentration of 400 ng mL⁻¹. Each sample dilution was analyzed in triplicate, and the figure shows representative images.