Research
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.”
21 studies match for “chlorophyll a/b ratio”
… analysis were conducted to reveal the expression levels of genes related to chlorophyll content and chlorophyll a/b ratio under natural light and shading conditions. Experimental results revealed the presence of the following …
Agronomy / cultivationMetabolism and weightL-theanine and caffeineCultivation and shadingCited 7×… study provided an effective method to identify steamed green tea powder adulterations in matcha rapidly and nondestructively with the combination of visible spectroscopy and chemometrics. Thirty pure matcha samples, 30 100% steamed green …
Chemical / analyticalProcessing, milling and qualityAuthenticity and analytical methodsCited 18×… Our purpose is to determine if these variables can exert an influence on the chlorophyll profile and to establish a characteristic profile for specific green teas. With such an aim, we analyzed the chlorophyll profiles of 6 different …
Chemical / analyticalProcessing, milling and qualityAuthenticity and analytical methodsMetabolism and weightCited 11×… to quantitatively investigate the effects of ultraviolet (UV) light exposure duration (0, 12, 24, 36, 48, and 60 hours) on the caffeine concentration in matcha powder (Camellia sinensis), as measured by UV-Vis spectrophotometric analysis, …
Sensory / consumerAntioxidants and polyphenolsL-theanine and caffeineProcessing, milling and quality… for tea polyphenols (TPs), 0.7942 for free amino acids (FAAs), 0.8314 for the ratio of TPs to FAAs, and 0.8473 for chlorophyll. These findings highlight the potential of VNIR-HSI technology as a rapid and nondestructive alternative for …
Chemical / analyticalAntioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 77×… used in the traditional Japanese tea ceremony. They showed a higher content of chlorophyll and of free amino acids (theanine and arginine) than the less expensive teas. They also showed a lower content of epigallocatechin as well as a …
Other / not statedAntioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 14×… newly produced PB a, including PB a initially present and that converted from chlorophyllide a (Chd a) by the chlorophyllase reaction during incubation, in green tea samples, and found that the total content of PB a markedly increased in …
Other / not statedProcessing, milling and qualityCited 13×… degradation and epimerization, caffeine retention, L-theanine stability, and chlorophyll loss. The implications of these alterations for sensory quality, safety, and gastrointestinal release are discussed. Emerging findings on gut …
ReviewAntioxidants and polyphenolsGut and microbiomeProcessing, milling and qualityCited 1×… was analysed for its chemical composition, fibre, vitamin C, caffeine and chlorophyll contents. Flavonoids and phenolics, phenolic profiles and antioxidant activity both in water and methanol solutions were determined. In vitro …
In vitro / cell studyAntioxidants and polyphenolsL-theanine and caffeineGut and microbiomeCited 79×… and has many health-promoting properties; it contains high concentrations of polyphenols, theanine and chlorophyll. Tea, and by extension matcha, contains numerous minerals, one of which is fluorine. Under physiological …
Agronomy / cultivationSafety, contaminants and toxicityCultivation and shadingProcessing, milling and qualityCited 7×… the total phenolic and flavonoid contents, catechin composition, total chlorophyll levels, caffeine concentrations, and antioxidant properties of hot water extracts prepared from ten culinary and ceremonial matcha teas. Compared …
Observational (human)Antioxidants and polyphenolsL-theanine and caffeineProcessing, milling and qualityCited 3×… nutraceuticals is challenging due to the low water content and high concentration of matrix components that can lead to significant matrix effects in liquid chromatography-positive ion electrospray ionization-tandem mass spectrometry …
Chemical / analyticalSafety, contaminants and toxicityProcessing, milling and qualityAuthenticity and analytical methodsCited 18×… sample No. 3, where the caffeine level was lower. The authors showed that the ratio of the amount of polyphenols and amino acids, the ratio of the amount of total polyphenols and nitrogen of the glutelin fraction can represent the …
Agronomy / cultivationAntioxidants and polyphenolsL-theanine and caffeineCultivation and shadingCited 1×… phenolic acids, flavonoids and total polyphenols, was assessed. The content of chlorophyll, vitamin C and antioxidant potential were also examined. Matcha M-4 was used to design two functional model beverages, in the form of ready-to-use …
Observational (human)Antioxidants and polyphenolsProcessing, milling and qualityAroma, flavor and sensoryCited 31×… period) on quality of Matcha have been studied by measuring the contents of chlorophyll and its derivatives, total vitamin C, the surface color value and the amount of oxygen in tea bag. Sensory test was used at the same time. As a …
Food science / processingProcessing, milling and qualityAroma, flavor and sensory… plants are shaded prior to harvest. This practice enhances the accumulation of chlorophyll, caffeine, L-theanine, and other bioactive compounds. In addition, specialized post-harvest processing, including careful hand-picking, gentle …
ReviewCognition, mood and stressMetabolism and weightAntioxidants and polyphenolsCited 2×… Chamnok cultivar (Cv_10). The results showed that Cv_24 exhibited a higher chlorophyll content (SPAD value), superior photosynthetic efficiency (O-J-I-P curve and Fv/Fm ratio), and the highest theanine content (275.6 mg/100 g), which …
Agronomy / cultivationL-theanine and caffeineCultivation and shadingProcessing, milling and qualityMatcha green tea, a powdered whole-leaf preparation from shade-grown Camellia sinensis, exhibits a unique biochemical profile rich in catechins (particularly EGCG), L-theanine, caffeine, and chlorophyll, distinguishing it from conventional …
Randomized controlled trialCognition, mood and stressMetabolism and weightCardiovascular and blood pressure… into catechins, so L-theanine accumulates instead of being consumed, while chlorophyll synthesis ramps up to compensate for the light lost. The result is the vivid colour, umami sweetness, and distinctive caffeine-to-theanine ratio …
ReviewCognition, mood and stressMetabolism and weightCardiovascular and blood pressure… enriched with matcha powder, with a focus on determining the optimal concentration of the additive and its effect on the quality of the final product. The relevance of the work is driven by the growing demand for products with enhanced …
Observational (human)Antioxidants and polyphenolsAroma, flavor and sensoryFood products and applications… exposure during the final weeks of growth, the plants produce higher levels of chlorophyll and amino acids, particularly L-Theanine. This process results in a richer green color, smoother flavor, and a more concentrated source of …
Food science / processingCognition, mood and stressAntioxidants and polyphenolsL-theanine and caffeineEvery 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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