4.6 Article

Arabica-like flavour in a heat-tolerant wild coffee species

Journal

NATURE PLANTS
Volume 7, Issue 4, Pages 413-+

Publisher

NATURE PORTFOLIO
DOI: 10.1038/s41477-021-00891-4

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Coffea stenophylla, a narrow-leaved wild coffee from Upper West Africa, has a sensory profile similar to high-quality Arabica coffee but can thrive at higher temperatures. This plant can broaden the climate envelope for high-quality coffee and may be a valuable resource for developing climate-resilient coffee crop plants.
Coffea stenophylla is a recently rediscovered, narrow-leaved wild coffee from Upper West Africa. Rigorous sensory evaluation (tasting) rates its flavour profile as analogous to high-quality Arabica coffee, but it can grow at much higher temperatures. There are numerous factors to consider when developing climate-resilient coffee crops, including the ability to tolerate altered climatic conditions, meet agronomic and value chain criteria, and satisfy consumer preferences for flavour (aroma and taste). We evaluated the sensory characteristics and key environmental requirements for the enigmatic narrow-leaved coffee (Coffea stenophylla), a wild species from Upper West Africa(1). We confirm historical reports of a superior flavour(1-3) and uniquely, and remarkably, reveal a sensory profile analogous to high-quality Arabica coffee. We demonstrate that this species grows and crops under the same range of key climatic conditions as (sensorially inferior) robusta and Liberica coffee(4-9) and at a mean annual temperature 6.2-6.8 degrees C higher than Arabica coffee, even under equivalent rainfall conditions. This species substantially broadens the climate envelope for high-quality coffee and could provide an important resource for the development of climate-resilient coffee crop plants.

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