CHIZU — the atlas of coffee research
Coffee research in Türkiye
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 1,601 papers are 1,601 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.
Türkiye 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
1971–2026
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
- Antioxidant activity of food constituents: an overview2011cited 1,652open access
- Color Stability of Resin Composites after Immersion in Different Drinks2006cited 575open access
- Risk factors for hip fracture in european women: The MEDOS study1995cited 570
- Effects of different drinks on stainability of resin composite provisional restorative materials2005cited 454
- Effects of staining and bleaching on color change of dental composite resins2006cited 440
- Prevalence of dysmenorrhea and its effect on quality of life among a group of female university students2010cited 432open access
- Complex Human Activity Recognition Using Smartphone and Wrist-Worn Motion Sensors2016cited 423open access
- Risk Factors for Hip Fracture in Men from Southern Europe: The MEDOS Study1999cited 353
- The Removal of Heavy Metals by Using Agricultural Wastes1993cited 346
- Efficacy of Acute Caffeine Ingestion for Short-term High-Intensity Exercise Performance: A Systematic Review2010cited 306
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 1,601 papers, 574 carry one. The breakdown below is about those 574 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 1,601 papers, 995 carry one. The breakdown below is about those 995 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. Türkiye has 1,601 — a factor of 14.
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