MatchaDB

Research

The Global Matcha Research Library

641 papers, trials, theses and preprints that study matcha, gathered from PubMed, OpenAlex and Europe PMC, tagged by study type and topic, and linked back to every source. We keep abstracts and citations; the full text stays with its publisher.

Tip: use "quotes" for an exact phrase, OR between alternatives, and a minus to leave a word out, for example fluoride OR pesticide. Related words are matched too, so “EGCG” also finds “epigallocatechin.”

Popular searchesL-theanineEGCG and catechinsCaffeineFocus and memoryStress and sleepWeight and metabolismGut healthContaminantsPesticidesShade-growingAroma and flavorTea ceremony

5 studies match for “discriminant analysis”

2023Journal articleFree to read

Identifying the Producer and Grade of Matcha Tea through Three-Dimensional Fluorescence Spectroscopy Analysis and Distance Discrimination.

Xu Y, Zhou X, Lei W — Foods (Basel, Switzerland)

… grade of matcha tea by coupling three-dimensional fluorescence spectroscopy analysis and distance discrimination. The matcha tea was extracted three times and three-dimensional fluorescence spectroscopies of these tea infusions were …

Chemical / analyticalAuthenticity and analytical methodsProcessing, milling and qualityCited 9×
2018Journal article

Fast nondestructive identification of steamed green tea powder adulterations in matcha by visible spectroscopy combined with chemometrics

Xiao‐Lan Yu, Yong He — Spectroscopy Letters

… classification and quantitative prediction. The principal component analysis–linear discriminant analysis model and the soft independent modeling of class analogy model in the qualitative classification as well as the partial …

Chemical / analyticalProcessing, milling and qualityAuthenticity and analytical methodsCited 18×
2023Journal articleFree to read

Variations of main quality components of matcha from different regions in the Chinese market.

Luo Y, Zhang Y, Qu F, et al. — Frontiers in nutrition

… leading to the different aroma characteristics. Hierarchical cluster analysis (HCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) showed that 11 samples of matcha were well clustered according to different …

Observational (human)Antioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 13×
2025Journal articleFree to read

Detection and classification of microplastics in green tea using SERS with gold nanoparticle substrates integrating chemometrics and deep learning.

Joshi R, Adhikari S, Lee D, et al. — Current research in food science

… the samples, we compared two chemometric techniques—Partial Least Squares Discriminant Analysis (PLS-DA) and Support Vector Machine (SVM)—with a deep learning approach namely one-dimensional convolutional neural network (1D-CNN). …

Chemical / analyticalSafety, contaminants and toxicityProcessing, milling and qualityAuthenticity and analytical methodsCited 11×

How this library is built

Every record comes from three open scholarly indexes — PubMed, OpenAlex and Europe PMC — searched for the word “matcha.” Records are merged by DOI and PubMed ID so each study appears once. A paper is kept only if matcha appears in its title, abstract, author keywords or subject terms and the text is about tea or food, which filters out the surname Matcha, software called Matcha, and the Scandinavian verb “matcha” (to match).

Study type and topic tags are assigned automatically from each paper's own title, abstract and subject terms using fixed keyword rules — no guesses, and papers without an abstract are marked as unclassified. Automatic tagging is imperfect, so treat tags as a way to narrow a search, not as a verdict on a paper's quality. A study being listed here is not an endorsement of its findings.

Coverage: this is every indexed paper that names matcha, not every study of green tea or its compounds (those are far more numerous). Papers that mention matcha only in passing are hidden by default. Work that never uses the word “matcha,” and publications outside these indexes, are not included. The library was last rebuilt October 20, 2026.

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