The Global Matcha Research Library

Salivary levels of catalase, total antioxidant capacity and interleukin-1β and oral health-related quality of life after matcha and green tea consumption for patients with gingivitis: A randomized clinical trial.

Objectives: To evaluate the changes in salivary levels of catalase (CAT), total antioxidant capacity (TAC) and IL-1β (primary outcomes) as well as gingival health and oral health-related quality of life (OHRQOL) 1 month after the…

Green Packaging Films with Antioxidant Activity Based on Pectin and Camellia sinensis Leaf Extract.

In the packaging materials sector, increasing globalization has created the need for increased efforts to develop consumer protection measures. Consequently, new packaging materials are being sought to replace petroleum-based materials in…

Effects of Matcha Green Tea Powder on Cognitive Functions of Community-Dwelling Elderly Individuals.

Matcha Green Tea Powder contains a variety of active ingredients beneficial to health, such as tea catechins, lutein and vitamin K. It is also known that these ingredients confer benefits upon cognitive functions of elderly people.…

Functional biodegradable agar based films from polyphenol-rich matcha extracts via deep eutectic solvents: From microstructure to bioactivity.

The increasing demand for sustainable alternatives to petroleum-based plastics highlights the need for innovative bioactive packaging systems. This study aimed to develop agar-based biodegradable films co-incorporating deep eutectic…

Natural particles can armor emulsions against lipid oxidation and coalescence.

Traditional functional ingredients, such as conventional emulsifiers (surfactants, animal-derived proteins), and synthetic antioxidants may become obsolete in the development of clean-label, plant-based, sustainable food emulsions.…

Matcha consumption maintains attentional function following a mild acute psychological stress without affecting a feeling of fatigue: A randomized placebo-controlled study in young adults.

Tea is a beverage commonly consumed worldwide. Matcha is a type of green tea produced by drying and grinding tea leaves (Camellia sinensis L.) into a fine powder. Matcha contains catechin, theanine, and caffeine, which affect cognitive…

Dietary Beverages and Cutaneous Health: Mechanisms, Clinical Evidence, and Practical Implications for Dermatologists.

Background: Beverage consumption is a common, modifiable lifestyle factor with potential relevance to cutaneous health. Objective: To synthesize clinical and mechanistic evidence on commonly consumed beverages and dermatological outcomes.…

A randomized, double-blinded study evaluating effect of matcha green tea on human fecal microbiota.

Matcha green tea is made from powdered green tea leaves. Unlike regular green tea, Matcha green tea is believed to exert beneficial effects on the gut microbiota, as it is richer in nutrients such as tea catechins and insoluble dietary…

Effects of tea, catechins and catechin derivatives on Omicron subvariants of SARS-CoV-2.

The Omicron subvariants of SARS-CoV-2 have multiple mutations in the S-proteins and show high transmissibility. We previously reported that tea catechin (-)-epigallocatechin gallate (EGCG) and its derivatives including…

Catechins in green tea powder (matcha) are heat-stable scavengers of acrolein, a lipid peroxide-derived reactive carbonyl species.

Lipid peroxidation-derived reactive carbonyl species (RCS) such as acrolein and 4-hydroxynonenal pose health risks. We characterized the RCS-scavenging reactions of tea catechins in an aqueous solution and in baked cake. Acrolein's…

Comparison of technological and physical properties of matcha powders of different geographical origins.

Background: The sorption characteristics and glass transition temperature are important attributes that determine the shelf life of foods, particularly in powder form, whereas color is a key factor influencing consumer acceptance. As the…

Changes in Intestinal Microbiota of Type 2 Diabetes in Mice in Response to Dietary Supplementation With Instant Tea or Matcha.

Objective: Gut microbiota plays a key role in metabolism and health in diabetes patients with gastrointestinal microbiota dysbiosis. Thus, regulating the ecological balance of gut microbiota may provide a pathway toward improvement for…

Three Weeks Daily Intake of Matcha Green Tea Powder Affects Substrate Oxidation during Moderate-Intensity Exercise in Females.

Artificial green tea extracts may enhance exercise-induced fat oxidation. Natural Matcha green tea consumption involves the ingestion of the powdered green tea leaves. We examined the effects of three weeks daily intake of Matcha green tea…

Tannin-Mordant Coloration with Matcha (camelia sinensis) and Iron(II)-Lactate on Human Hair Tresses.

The aim of this work was to optimize our natural hair dyeing system which we described in our previous work and to compare with other dyeing systems. Therefore, we investigated concentration limits of matcha and mordant and compared this…

Feasibility and Efficacy of a Novel Mindfulness App Used With Matcha Green Tea in Generally Healthy Adults: Randomized Controlled Trial.

Background: Mindfulness practices, such as breathing meditation (BM), reduce stress and enhance mood. One such practice is mindful eating, where a practitioner focuses on the five senses while eating or drinking. A novel set of prototypes…

Changes in the nitrogen footprint of green tea consumption in Japan from 1965 to 2016.

Heavy application of nitrogen (N) in tea (Camellia sinensis (L.)) plantations causes various environmental problems. To date, studies on N flows have been limited to the tea plantation level, but the crucial drivers of N flows are…

Camellia sinensis in the Prevention and Treatment of Dry Mouth: A Review.

Background/Objective: Persistent dry mouth, associated with poor oral health and lower quality of life (QoL), affects approximately 20% of adults in the global population. Indicating a potential role in nutrition, Camellia sinensis tea…

Effect of Green Tea Phytochemicals on Mood and Cognition.

Background: Green tea is traditionally known to induce mental clarity, cognitive function, physical activation and relaxation. Recently, a special green tea, matcha tea, is rapidly gaining popularity throughout the world and is frequently…

Matcha green tea (MGT) inhibits the propagation of cancer stem cells (CSCs), by targeting mitochondrial metabolism, glycolysis and multiple cell signalling pathways.

Matcha green tea (MGT) is a natural product that is currently used as a dietary supplement and may have significant anti-cancer properties. However, the molecular mechanism(s) underpinning its potential health benefits remain largely…

Effect of matcha consumption on gut microbiota in healthy Japanese individuals: study protocol for a double-blind crossover interventional study.

Background: This study compares and clarifies the changes in intestinal flora resulting from the continuous consumption of two types of matcha. Methods: Healthy adults will consume two types of matcha tea for four weeks, and differences in…

The discourse of a global consumption frenzy: A critical discourse analysis of matcha representation in international media

Unveiling the total catechin profile in tea leaves: a novel one-step extraction method empowered by UPLC-IDX-Orbitrap mass spectrometry.

More catechins are found in green tea than in any other type of tea, with its predominant production taking place in Asian nations. Consumption of green tea has been strongly correlated with a reduced risk of many diseases. This study…

Evaluation of fluoride levels in commercially available tea in the United States.

The objective of this study was to compare fluoride levels in commercially available black tea, green tea, and matcha tea. Tea samples were purchased from a local supermarket in the United States and prepared according to the…

Case-control study of urinary bladder cancer in metropolitan Nagoya.

We conducted a population-based case-control study of patients with bladder cancer and of controls drawn randomly from the general population of Metropolitan Nagoya and interviewed both groups. The incidence rates of bladder cancer were…

Honey-Propolis-Enriched Pectin Films for Active Packaging of Soluble Coffee and Matcha Powders.

This study reports the development and characterization of novel active edible films based on apple pectin and honey (80:20, w/w), incorporating raw propolis powder at 0.1%, 0.2%, and 0.3% (w/w, relative to honey) as a natural source of…