What You Need to Know
The process crushes dried cochineal insects and extracts carminic acid in water at 60–80 °C for 1–2 h, optionally adding ~50 % ethanol to boost yield. Maintaining the extraction pH at 4–5 preserves pigment stability, after which the filtrate is concentrated under reduced pressure (40–50 °C) to obtain a dry powder or liquid concentrate.
Steps
- 1.
Oaxacan mole rojo (Mexico): provides vibrant red color base
- 2.
Italian aperitivo liqueurs (Italy): natural coloring for Campari-style beverages
- 3.
Japanese wagashi confections (Japan): traditional pink/red dye for mochi
The Science
Primary Reaction
solvent extraction of carminic acid (C22H20O13) from insect tissue into aqueous/ethanol medium