CHIZU — the atlas of coffee research
Coffee research in Switzerland
Two limits come with this count. Only 100,474 of the 190,643 searchable papers (52.7%) carry an author affiliation country. The other 90,169 (47.3%) carry none. So these 1,243 papers are 1,243 out of the 100,474 whose affiliation is known. And a co-authored paper is counted once for every country its authors sit in. Per-country counts therefore do not add up to the whole.
Switzerland does not grow coffee, but coffee is researched there.
Check it yourself
This is not our word for it. You can run the same query against the same index.
When they were written
1965–2026
Years before 1600 are treated as unknown. The upstream data (OpenAlex) sometimes writes 1400 when the year is missing, and that is a placeholder, not a measurement.
Where they appeared
Top 8 sources (journals and repositories)
Most cited
10 papers, most cited first
- Genome sequence of the metazoan plant-parasitic nematode Meloidogyne incognita2008cited 1,302open access
- Restoration of reaching and grasping movements through brain-controlled muscle stimulation in a person with tetraplegia: a proof-of-concept demonstration2017cited 927open access
- Bioavailability of bioactive food compounds: a challenging journey to bioefficacy2012cited 846open access
- Multifunctional shade-tree management in tropical agroforestry landscapes - a review2011cited 801open access
- Public health importance of triggers of myocardial infarction: a comparative risk assessment2011cited 523
- The Emergence of a Standards Market: Multiplicity of Sustainability Standards in the Global Coffee Industry2012cited 504
- Coffee, caffeine, and sleep: A systematic review of epidemiological studies and randomized controlled trials2016cited 495open access
- Inhibition of non-haem iron absorption in man by polyphenolic-containing beverages1999cited 482open access
- ‘Electronic Noses’ and Their Application to Food1998cited 446
- A Review of Acrylamide: An Industry Perspective on Research, Analysis, Formation, and Control2004cited 431
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 1,243 papers, 542 carry one. The breakdown below is about those 542 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
Which field
Only 75.9% of the whole index carries a field label. Of this country's 1,243 papers, 952 carry one. The breakdown below is about those 952 papers only — the rest were never candidates for it.
One paper can carry several labels, so the breakdown adds up to more than that number.
What language
"undetermined" means the upstream record carried no language. We did not guess one.
Knowledge is not evenly spread
Counting only papers whose author affiliation is known, the largest is Indonesia with 22,248. Switzerland has 1,243 — a factor of 18.
That gap does not follow where coffee is grown. Research gathers where the means to do research are, not where the coffee is. Making that visible is why CHIZU exists.
Other countries
Indonesia 22,248United States 17,988Brazil 10,857United Kingdom 5,569China 4,887India 3,542Germany 3,185Italy 3,111France 3,072Japan 2,822Colombia 2,489Spain 2,363