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

4 studies match for “spectral preprocessing”

2024Journal article

Monitoring of carotenoids changes during the matcha drying process using a portable developed spectral analytical system

Jiang Y, Zareef M, Liu L, et al. — Journal of food composition and analysis : an official publication of the United Nations University, International Network of Food Data Systems

… A total of 275 tea samples were obtained at various stages of drying for spectral acquisition and carotenoid analysis. After normalization preprocessing, bootstrapping soft shrinkage (BOSS), iteratively variable subset optimization …

Chemical / analyticalProcessing, milling and qualityAroma, flavor and sensoryAuthenticity and analytical methods
2023Journal article

Monitoring chlorophyll changes during Tencha processing using portable near-infrared spectroscopy.

Liu L, Zareef M, Wang Z, et al. — Food chemistry

… content by a portable near-infrared (NIR) spectrometer. The Tencha samples' spectral data were first preprocessed using various preprocessing techniques. Subsequently, iteratively variable subset optimization (IVSO), bootstrapping soft …

Chemical / analyticalCultivation and shadingProcessing, milling and qualityAuthenticity and analytical methodsCited 91×
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

… PET contamination in four green tea powder varieties across the 400–1650 cm -1 spectral range. To classify the samples, we compared two chemometric techniques—Partial Least Squares Discriminant Analysis (PLS-DA) and Support Vector Machine …

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.

Spot a paper that doesn't belong, or one that's missing? Tell us.