Mozambique: Floral and fruit notes in Chimanimani coffee contribute to its specialty-grade 87.25 score and unique flavour, study finds

Organic coffee from Chimanimani National Park, in Mozambique’s central Manica Province, has been shown to contain high levels of aromatic compounds associated with jasmine and fruit, giving it a unique flavour profile, a recently published study has established. The study, titled “Integrated microbial–metabolomic analysis reveals how fermentation contributes to the unique flavour of African Arabica coffee,” provides a detailed scientific explanation for the coffee’s distinctive aromas. The investigation, carried out in June 2024 during the harvest and based on coffee fermentation trials, concluded that there is an “accumulation of phenylethyl alcohol (rose-like aroma) and linalool (floral aroma) inside the beans” of Chimanimani coffee, “together with the presence of ethyl acetate and other microbial esters.” These metabolites, combined with terroir-derived plant volatiles, contributed to a specialty-grade beverage (87.25 ± 0.25 points) characterised by distinctive fruity and floral notes, consistent with the high-altitude terroirs of Eastern Africa,” the study determined.

“The elevated levels of phenylethyl alcohol and linalool highlight these compounds as promising microbial markers of fermentation-driven quality, forming a biochemical signature not previously reported for any other coffee-producing region,” the document adds. The study emphasises that “these newly identified microbial–chemical signatures are relevant not only for advancing our understanding of African coffee fermentation but also for informing the development of regionally tailored microbial starter cultures and for establishing scientifically grounded criteria for the geographical differentiation of African specialty coffees.” File photo: Ministério da Agricultura, Ambiente e Pescas Future studies on Chimanimani coffee will evaluate the presence of these differentiating elements across different harvest seasons to enable comparisons with other African coffees. READ:Mozambique: Walking the walk to a place among the main coffee producers in Africa By covering multiple harvest seasons, micro-regions, and independent fermentation batches across Africa, these studies will assess the robustness of these markers, confirm their reproducibility under diverse environmental conditions, and solidify the biochemical basis for recognising and valorising African specialty coffees in the global market. The University of Lisbon study also identified a microbial axis with a unique signature that translates into distinctive aroma and sweetness, giving Chimanimani coffee its unique identity.