Development of a Rapid and Simple Method for Detection of Protein Contaminants in Carmine

Figure 3

SDS-PAGE of protein contaminants in carmine (Sample A, cochineal extract, Biocon) after silver staining. (a) Amicon Ultra-0.5 ultrafiltration device. (b) Nanosep 3 K Omega ultrafiltration device.

(a)

(b)