Pruebas de Pureza de la Berenjena: Detecta colorantes y pesticidas

Brinjals are often treated with artificial dyes to enhance their purple color or sprayed heavily with pesticides to prevent infestation by the fruit borer.

1. The Cotton Rub Test (Dye Check):
Soak a cotton ball in water or liquid paraffin and rub the purple skin of the brinjal. If the cotton picks up a purple or pinkish tint, artificial dye has been applied. Natural brinjal color does not rub off.

2. The Stem Color and Texture:
Examine the stem (calyx). A naturally fresh brinjal has a vibrant green, slightly prickly stem. If the brinjal body looks perfectly purple but the stem is dark brown, wilted, or feels "slimy," it has likely been chemically preserved or dyed.

3. The Internal Flesh Check:
Cut the brinjal in half. The flesh should be creamy white with small, tender seeds. If you see dark brown "tracks" inside, it indicates a fruit borer infestation. If the flesh looks unnaturally white or "bleached," suspect a sulfite or chlorine wash.

4. The Water Soak (Chemical Check):
Soak sliced brinjal in salt water for 15 minutes. If the water turns deep purple or brown immediately, suspect artificial coloring or high chemical load. (Note: slight browning is natural oxidation).