CHIZU — the atlas of coffee research
Coffee research in South Korea
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 2,016 papers are 2,016 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.
South Korea 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
- E-Cigarettes2014cited 1,206open access
- The Tea Tree Genome Provides Insights into Tea Flavor and Independent Evolution of Caffeine Biosynthesis2017cited 660open access
- Green synthesis of silver nanoparticles using Coffea arabica seed extract and its antibacterial activity2015cited 587
- Staining of resin-based veneering materials with coffee and tea.1991cited 484no DOI
- Environmental risk factors in inflammatory bowel disease: a population-based case-control study in Asia-Pacific2014cited 444open access
- Neuroprotective effects of chlorogenic acid on scopolamine-induced amnesia via anti-acetylcholinesterase and anti-oxidative activities in mice2010cited 436
- Effect of image, satisfaction, trust, love, and respect on loyalty formation for name-brand coffee shops2018cited 392
- Removal of Malachite Green from aqueous solution using degreased coffee bean2009cited 387
- Sustainability labels on coffee: Consumer preferences, willingness-to-pay and visual attention to attributes2015cited 353
- Adsorption isotherms and kinetic modeling of methylene blue dye onto a carbonaceous hydrochar adsorbent derived from coffee husk waste2020cited 338
Which stage of coffee
Only 30.2% of the whole index carries a stage label. Of this country's 2,016 papers, 829 carry one. The breakdown below is about those 829 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 2,016 papers, 1,447 carry one. The breakdown below is about those 1,447 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. South Korea has 2,016 — a factor of 11.
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