Fast Simultaneous Determination of Eight Sudan Dyes in Chili Oil by Ultra-High-Performance Supercritical Fluid Chromatography

Figure 1

Chemical structure of eight Sudan dyes. (a) Sudan I. (b) Sudan II. (c) Sudan III. (d) Sudan red G. (e) Para red. (f) Sudan red 7B. (g) Sudan IV. (h) Sudan red B.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)