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Ethyl acetate (sugarcane) process

How the ethyl acetate (EA) process—often called the sugarcane method—decaffeinates coffee using a naturally derived solvent while maintaining desirable flavor qualities.

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Article 3 of 12 in Decaffeination & Soluble Coffee/
Ethyl acetate (sugarcane) process

Overview

  • Ethyl acetate (EA) is a solvent naturally found in fruits and sugarcane.
  • Often marketed as “natural decaf” when derived from sugarcane fermentation.
  • Selectively removes caffeine while preserving much of the coffee’s inherent character.

Step-by-Step Process

  1. Steaming: Green beans steamed to open pores and soften structure.
  2. Solvent Application: Beans washed in a solution of water and ethyl acetate.
  3. Caffeine Extraction: EA bonds preferentially with caffeine molecules, drawing them out of beans.
  4. Rinsing: Residual solvent removed by further steaming/water washing.
  5. Drying & Stabilization: Beans dried back to stable moisture content and packaged.

Advantages

  • Naturally Associated Compound: Marketed positively since EA occurs in many foods.
  • Flavor Preservation: Maintains good sweetness and body.
  • Cost-Effective: Less expensive than Swiss Water or CO₂.

Considerations

  • Residue Concerns: Proper processing ensures only trace, safe levels of EA remain.
  • Perception: Some consumers may distrust the word “solvent,” even if naturally derived.
  • Flavor Impact: Slight fruity or ester-like notes may be introduced.

Market Relevance

  • Popular in Latin America, especially Colombia, where sugarcane-derived EA is locally available.
  • Increasingly favored in specialty coffee as a balance of natural image and cost efficiency.

Summary

The ethyl acetate (sugarcane) process decaffeinates coffee by selectively binding caffeine with a naturally occurring solvent. Seen as more natural than chemical alternatives, it preserves flavor well and is cost-effective, making it a popular choice in both origin-based and specialty markets.

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Coffee Basics Nerds

Written by : Coffee Basics Nerds

Expert coffee historians and brewing enthusiasts dedicated to sharing the rich heritage and techniques behind your perfect cup of coffee.

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