caffeine has been researched along with theanine in 68 studies
| Timeframe | Studies, this research(%) | All Research% |
|---|---|---|
| pre-1990 | 0 (0.00) | 18.7374 |
| 1990's | 1 (1.47) | 18.2507 |
| 2000's | 10 (14.71) | 29.6817 |
| 2010's | 43 (63.24) | 24.3611 |
| 2020's | 14 (20.59) | 2.80 |
| Authors | Studies |
|---|---|
| Hirota, S; Miyagishima, A; Nozawa, Y; Sadzuka, Y; Sugiyama, T | 1 |
| Sadzuka, Y; Sonobe, T; Sugiyama, T | 1 |
| Kakuda, T; Nozawa, A; Okai, O; Okamura, N; Unno, T | 1 |
| Apostolides, Z; Aucamp, JP; Hara, Y | 1 |
| Chen, CN; Lai, JR; Liang, CM; Lin, JK; Tsai, YJ; Tsay, JS | 1 |
| Heatherley, SV; Pleydell-Pearce, CW; Rogers, PJ; Smith, JE | 1 |
| Haskell, CF; Kennedy, DO; Milne, AL; Scholey, AB; Wesnes, KA | 1 |
| Bryan, J | 1 |
| Foxe, JJ; Gomez-Ramirez, M; Kelly, SP; Montesi, JL | 1 |
| De Bruin, EA; Owen, GN; Parnell, H; Rycroft, JA | 1 |
| Choi, SH; Friedman, M; Kozukue, N; Lee, SU; Levin, CE | 1 |
| De Bruin, EA; Einöther, SJ; Martens, VE; Rycroft, JA | 1 |
| Cui, X; Diao, F; Dong, F; Guo, D; Liu, N; Wang, Q | 1 |
| Chung, JO; Hong, YS; Hwang, JA; Lee, BJ; Lee, CH; Lee, JE; Lee, SJ | 1 |
| De Bruin, EA; Giesbrecht, T; Rowson, MJ; Rycroft, JA | 1 |
| De Bruin, EA; Owen, GN; Rowson, MJ; Rycroft, JA; Van Buren, L | 1 |
| Fukuhara, K; Ohno, A; Oka, K; Okuda, H; Sakuma, C | 1 |
| Chung, JO; Hong, YS; Hwang, JA; Kim, EH; Ko, KS; Lee, BJ; Lee, JE; Lee, SJ | 1 |
| Ha, JH; Jang, HS; Jang, IS; Jang, KH; Jung, JY; Kim, SH; Lee, MG; Suk, K | 1 |
| de Bruin, EA; Foxe, JJ; Kelly, SP; Laud, PJ; Morie, KP; Rowson, MJ | 1 |
| Fujitani, K; Hara, A; Hoshino, M; Iguchi, K; Ishii, N; Nagano, H; Nagashima, T; Shimoi, K; Takamori, N; Tanida, N; Unno, K; Yamamoto, H | 1 |
| Motoki, M; Murao, S; Yokogoshi, H; Yoto, A | 1 |
| Feng, Y; Gou, L; Ling, X; Liu, Y; Sun, L; Tian, X; Wang, L; Yin, X | 1 |
| Bai, Y; Chang, C; Feng, B; Li, X; Liao, Y; Liu, H; Xu, G | 1 |
| Einöther, SJ; Martens, VE | 1 |
| Camfield, DA; Farrimond, J; Scholey, AB; Stough, C | 1 |
| Kim, SH; Kim, YB; Kim, YC; Lee, LS | 1 |
| Dodd, FL; Haskell-Ramsay, CF; Kennedy, DO; Riby, LM | 1 |
| Ashihara, H; Deng, WW | 1 |
| Chen, L; Li, CF; Li, X; Luo, D; Wang, SJ; Wang, XC; Yang, YJ; Yao, MZ; Yu, Y; Zhao, QY; Zhu, Y | 1 |
| Chen, Q; Deng, W; Fang, C; Ho, C; Tai, Y; Wan, X; Wei, C; Wei, S; Yang, H; Zhang, J; Zhang, L | 1 |
| Andlauer, W; Culetu, A; del Castillo, MD; Fernandez-Gomez, B; Ullate, M | 1 |
| Fuller, DQ; Jin, S; Li, X; Lu, H; Rao, H; Shen, C; Tong, T; Wang, C; Wang, L; Wu, N; Xu, B; Xu, D; Yang, W; Yang, X; Yang, Y; Zhang, J | 1 |
| Amarakoon, AMT; Dassanayake, TL; Kahathuduwa, CN; Weerasinghe, VS | 1 |
| Alves, MG; Casal, S; Dias, TR; Oliveira, PF; Silva, BM | 1 |
| Choi, JY; Hong, YS; Jamila, N; Jeon, DB; Khan, N; Kim, KS; Lee, CM; Lee, GH; Nho, EY; Park, YM | 1 |
| Hara, A; Iguchi, K; Morita, A; Nakagawa, A; Nakamura, Y; Ohshio, M; Unno, K | 1 |
| Brunyé, TT; Giles, GE; Kanarek, RB; Mahoney, CR; Taylor, HA | 1 |
| Dekker, M; Dietz, C | 1 |
| Iguchi, K; Kawasaki, Y; Morita, A; Nakamura, Y; Noda, S; Unno, K; Yamada, H | 1 |
| Dekker, M; Dietz, C; Piqueras-Fiszman, B | 1 |
| Ma, HY; Wu, ZJ; Zhuang, J | 1 |
| Beglinger, C; Borgwardt, S; Drewe, J; Lang, UE; Mancini, E; Zanchi, D | 1 |
| Forster, J; Haskell-Ramsay, CF; Jackson, PA; Kennedy, DO; Khan, J; Wightman, EL | 1 |
| Binks, M; Chin, SH; Dassanayake, TL; Davis, T; Dhanasekara, CS; Kahathuduwa, CN; Weerasinghe, VS | 1 |
| Chen, SQ; Liang, YR; Lu, JL; Ma, YX; Wang, ZS; Zhang, W; Zheng, XQ | 1 |
| Hirono, Y; Horie, H; Matsunaga, A; Sano, T | 1 |
| Guo, C; Huang, B; Liu, C; Liu, Z; Sun, J; Tai, Y; Wan, X; Wei, C; Xia, E; Yang, H; Yu, S; Yuan, Y | 1 |
| Furushima, D; Hamamoto, S; Horie, H; Iguchi, K; Morita, A; Nakamura, Y; Unno, K; Yamada, H | 1 |
| Chen, Q; Jordan, B; Li, Y; Liu, L; She, G; Wan, X; Zhang, X; Zhao, J | 1 |
| Drew, L | 1 |
| Gilbert, N | 1 |
| Davidson, C; Juaneza, A; Mitmesser, S; Santos, E; Taylor, L; Tinnin, M; Tinsley, G; Urbina, S; Villa, K; Zaragoza, J; Zhang, Z | 1 |
| Holzapfel, W; Hwang, JS; Jung, ES; Lee, CH; Park, H; Park, JI | 1 |
| Jiang, Y; Jiang, Z; Li, L; Li, T; Wan, X; Wei, C; Yang, H; Yang, Y; Zhang, L | 1 |
| Li, P; Wan, X; Xia, T; Zhao, J | 1 |
| An, Y; Guo, L; Guo, R; Liu, L; Mi, X; Wang, S; Wei, C; Xia, X; Yan, X; Zhao, S | 1 |
| Crowley, DC; Evans, M; Guthrie, N; Langston, J; Sulley, AM | 1 |
| Cheng, L; Gong, AD; Lian, SB; Wu, NN; Yuan, HY; Zhang, LM; Zhao, SQ; Zhou, YJ | 1 |
| Blume, J; Dassanayake, TL; Kahathuduwa, CN; Mastergeorge, A; Wakefield, S; Weerasinghe, VS; West, BD | 1 |
| Furushima, D; Iguchi, K; Nakamura, Y; Nomura, Y; Ozeki, M; Suzuki, T; Taguchi, K; Unno, K; Yamada, H | 1 |
| Ahammed, GJ; Deng, WW; Fu, JY; Han, WY; Li, MH; Li, X; Wei, JP; Yan, P; Zhang, LP | 1 |
| Lassabliere, B; Liu, SQ; Sun, J; Wang, R; Yu, B | 1 |
| Maritim, TK; Parmar, R; Seth, R; Sharma, RK | 1 |
| Baba, Y; Kaneko, T; Takihara, T | 1 |
| Hou, Q; Huang, S; Ni, W; Wang, J; Wang, X; Yao, L; Zheng, X; Zhuo, C; Zuo, T | 1 |
| Baba, Y; Okamura, N; Takihara, T | 1 |
| Alkazan, S; Bakir, Y; Buzdagli, Y; Ozhanci, B; Polat, ML; Ucar, H; Yilmaz, U | 1 |
7 review(s) available for caffeine and theanine
| Article | Year |
|---|---|
Psychological effects of dietary components of tea: caffeine and L-theanine.
Topics: Affect; Attention; Beverages; Brain; Caffeine; Cognition; Glutamates; Humans; Tea | 2008 |
Acute effects of tea consumption on attention and mood.
Topics: Affect; Attention; Caffeine; Camellia sinensis; Cognition; Glutamates; Humans; Plant Extracts; Tea | 2013 |
Acute effects of tea constituents L-theanine, caffeine, and epigallocatechin gallate on cognitive function and mood: a systematic review and meta-analysis.
Topics: Affect; Attention; Caffeine; Camellia sinensis; Catechin; Cognition; Glutamates; Humans; Plant Extracts; Tea | 2014 |
Effect of Green Tea Phytochemicals on Mood and Cognition.
Topics: Affect; Animals; Brain; Caffeine; Cognition; Glutamates; Humans; Phytochemicals; Randomized Controlled Trials as Topic; Tea | 2017 |
Green tea effects on cognition, mood and human brain function: A systematic review.
Topics: Affect; Brain; Caffeine; Camellia sinensis; Catechin; Cognition; Glutamates; Humans; Plant Extracts; Randomized Controlled Trials as Topic; Tea | 2017 |
Neuroprotective Effects and Mechanisms of Tea Bioactive Components in Neurodegenerative Diseases.
Topics: Animals; Antioxidants; Biflavonoids; Caffeine; Catechin; Glutamates; Herb-Drug Interactions; Humans; Neurodegenerative Diseases; Neurons; Neuroprotective Agents; Oxidative Stress; Phytochemicals; Plant Extracts; Polyphenols; Signal Transduction; Tea | 2018 |
Exploring plant metabolic genomics: chemical diversity, metabolic complexity in the biosynthesis and transport of specialized metabolites with the tea plant as a model.
Topics: Caffeine; Camellia sinensis; Catechin; Flavonoids; Gene Expression Regulation, Plant; Genomics; Glutamates; Metabolic Networks and Pathways; Metabolomics; Plant Leaves; Plants; Polymerization; Saponins; Secondary Metabolism; Transcriptome; Volatile Organic Compounds | 2020 |
22 trial(s) available for caffeine and theanine
| Article | Year |
|---|---|
Time for tea: mood, blood pressure and cognitive performance effects of caffeine and theanine administered alone and together.
Topics: Adult; Affect; Arousal; Attention; Blood Pressure; Caffeine; Cognition; Discrimination Learning; Double-Blind Method; Facial Expression; Female; Glutamates; Heart Rate; Humans; Male; Pattern Recognition, Visual; Tea | 2008 |
The effects of L-theanine, caffeine and their combination on cognition and mood.
Topics: Adolescent; Adult; Affect; Attention; Caffeine; Central Nervous System Stimulants; Cognition; Cross-Over Studies; Double-Blind Method; Drug Interactions; Female; Glutamates; Headache; Humans; Male; Memory; Memory, Short-Term; Mental Fatigue; Psychomotor Performance; Reaction Time; Saliva; Visual Perception | 2008 |
L-theanine and caffeine in combination affect human cognition as evidenced by oscillatory alpha-band activity and attention task performance.
Topics: Adult; Attention; Brain Mapping; Caffeine; Central Nervous System Stimulants; Cognition; Cues; Drug Therapy, Combination; Electroencephalography; Female; Glutamates; Humans; Male; Task Performance and Analysis | 2008 |
The combined effects of L-theanine and caffeine on cognitive performance and mood.
Topics: Adult; Affect; Attention; Caffeine; Cognition; Cross-Over Studies; Double-Blind Method; Drug Interactions; Female; Flicker Fusion; Glutamates; Humans; Male; Placebos; Time Factors | 2008 |
L-theanine and caffeine improve task switching but not intersensory attention or subjective alertness.
Topics: Adolescent; Adult; Affect; Analysis of Variance; Attention; Beverages; Caffeine; Central Nervous System Stimulants; Cognition; Cross-Over Studies; Double-Blind Method; Female; Glutamates; Humans; Male; Middle Aged; Sensation; Task Performance and Analysis; Tea; Time Factors; Young Adult | 2010 |
The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness.
Topics: Adolescent; Adult; Affect; Attention; Blood Pressure; Caffeine; Cognition; Double-Blind Method; Fatigue; Female; Glutamates; Heart Rate; Humans; Male; Placebos; Reaction Time; Tea | 2010 |
Black tea improves attention and self-reported alertness.
Topics: Adult; Analysis of Variance; Attention; Caffeine; Camellia sinensis; Cognition; Cross-Over Studies; Double-Blind Method; Female; Glutamates; Humans; Male; Self Report; Tea; Young Adult | 2011 |
Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task.
Topics: Adolescent; Adult; Arousal; Attention; Caffeine; Cross-Over Studies; Double-Blind Method; Drug Combinations; Female; Glutamates; Humans; Male; Psychomotor Performance; Reaction Time; Time Factors; Treatment Outcome; Young Adult | 2012 |
Effects of L-theanine or caffeine intake on changes in blood pressure under physical and psychological stresses.
Topics: Affect; Analysis of Variance; Blood Pressure; Caffeine; Cross-Over Studies; Female; Glutamates; Humans; Male; Severity of Illness Index; Skin Temperature; Stress, Physiological; Stress, Psychological; Task Performance and Analysis; Young Adult | 2012 |
A double-blind, placebo-controlled study evaluating the effects of caffeine and L-theanine both alone and in combination on cerebral blood flow, cognition and mood.
Topics: Adolescent; Adult; Affect; Attention; Caffeine; Central Nervous System Stimulants; Cerebrovascular Circulation; Cognition; Cross-Over Studies; Double-Blind Method; Female; Glutamates; Hemodynamics; Hemoglobins; Humans; Male; Oxyhemoglobins; Psychomotor Performance; Reaction Time; Spectroscopy, Near-Infrared; Vasoconstriction; Young Adult | 2015 |
Acute effects of theanine, caffeine and theanine-caffeine combination on attention.
Topics: Adult; Attention; Caffeine; Coffee; Cognition; Cross-Over Studies; Dietary Supplements; Evoked Potentials, Motor; Evoked Potentials, Visual; Glutamates; Humans; Male; Motor Activity; Nootropic Agents; Pattern Recognition, Visual; Performance-Enhancing Substances; Reaction Time; Sri Lanka; Students; Tea; Universities; Young Adult | 2017 |
Caffeine and theanine exert opposite effects on attention under emotional arousal.
Topics: Adolescent; Affect; Arousal; Attention; Caffeine; Cognition; Double-Blind Method; Drug Interactions; Female; Glutamates; Humans; Hydrocortisone; Male; Saliva; Young Adult | 2017 |
Reduced Stress and Improved Sleep Quality Caused by Green Tea Are Associated with a Reduced Caffeine Content.
Topics: Adult; alpha-Amylases; Caffeine; Catechin; Cross-Over Studies; Double-Blind Method; Female; Glutamates; Humans; Male; Middle Aged; Sleep; Stress, Psychological; Tea | 2017 |
An intervention study on the effect of matcha tea, in drink and snack bar formats, on mood and cognitive performance.
Topics: Adult; Affect; Attention; Caffeine; Camellia sinensis; Catechin; Cognition; Female; Glutamates; Humans; Male; Memory; Netherlands; Psychomotor Performance; Single-Blind Method; Snacks; Task Performance and Analysis; Tea; Time Factors; Young Adult | 2017 |
Cognitive and Mood Effects of a Nutrient Enriched Breakfast Bar in Healthy Adults: A Randomised, Double-Blind, Placebo-Controlled, Parallel Groups Study.
Topics: Adult; Affect; alpha-Linolenic Acid; Attention; Breakfast; Caffeine; Cognition; Double-Blind Method; Female; Food, Fortified; Glutamates; Healthy Volunteers; Humans; Male; Minerals; Task Performance and Analysis; Tyrosine; Vitamins | 2017 |
l-Theanine and caffeine improve target-specific attention to visual stimuli by decreasing mind wandering: a human functional magnetic resonance imaging study.
Topics: Adolescent; Adult; Attention; Caffeine; Central Nervous System Stimulants; Cognition; Cross-Over Studies; Dietary Supplements; Drug Synergism; Glutamates; Humans; Magnetic Resonance Imaging; Male; Reference Values; Young Adult | 2018 |
Stress-Reducing Function of Matcha Green Tea in Animal Experiments and Clinical Trials.
Topics: Adrenal Glands; Animals; Anti-Anxiety Agents; Arginine; Caffeine; Catechin; Female; Glutamates; Healthy Volunteers; Humans; Hypertrophy; Male; Mice; Stress, Psychological; Tea; Territoriality; Young Adult | 2018 |
Effects of acute caffeine, theanine and tyrosine supplementation on mental and physical performance in athletes.
Topics: Athletic Performance; Caffeine; Cross-Over Studies; Dietary Supplements; Double-Blind Method; Glutamates; Humans; Male; Performance-Enhancing Substances; Tyrosine; Young Adult | 2019 |
Pain Bloc-R Alleviates Unresolved, Non-Pathological Aches and Discomfort in Healthy Adults-A Randomized, Double-Blind, Placebo-Controlled, Crossover Study.
Topics: Acetylcarnitine; Adult; Angelica; Berberine Alkaloids; Caffeine; Chronic Pain; Cross-Over Studies; Double-Blind Method; Drug Combinations; Female; Glutamates; Humans; Hydrochloric Acid; Male; Middle Aged; Pain Management; Plant Bark; Plant Extracts; Plant Roots; Salix; Sex Factors; Thiamine; Treatment Outcome; Vitamin B 12; Vitamin B 6; Vitamin D; Vitamins; Young Adult | 2020 |
Effects of L-theanine-caffeine combination on sustained attention and inhibitory control among children with ADHD: a proof-of-concept neuroimaging RCT.
Topics: Adolescent; Attention; Attention Deficit Disorder with Hyperactivity; Brain; Caffeine; Child; Cognition; Drug Interactions; Female; Glutamates; Humans; Inhibition, Psychological; Magnetic Resonance Imaging; Male; Neuroimaging | 2020 |
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.
Topics: Adult; Attention; Caffeine; Camellia sinensis; Catechin; Cognition; Double-Blind Method; Fatigue; Female; Glutamates; Humans; Japan; Male; Placebos; Stress, Psychological; Tea | 2021 |
Effect of single or combined caffeine and L-Theanine supplementation on shooting and cognitive performance in elite curling athletes: a double-blind, placebo-controlled study.
Topics: Adolescent; Adult; Athletes; Athletic Performance; Caffeine; Child; Child, Preschool; Cognition; Cross-Over Studies; Dietary Supplements; Double-Blind Method; Humans; Polyesters; Young Adult | 2023 |
39 other study(ies) available for caffeine and theanine
| Article | Year |
|---|---|
The effects of theanine, as a novel biochemical modulator, on the antitumor activity of adriamycin.
Topics: Animals; Antibiotics, Antineoplastic; Caffeine; Carcinoma, Ehrlich Tumor; Doxorubicin; Glutamates; Glutathione Peroxidase; In Vitro Techniques; Kidney; Lipid Peroxides; Liver; Male; Mice; Myocardium | 1996 |
Efficacies of tea components on doxorubicin induced antitumor activity and reversal of multidrug resistance.
Topics: Animals; Antineoplastic Agents, Phytogenic; Antineoplastic Combined Chemotherapy Protocols; ATP Binding Cassette Transporter, Subfamily B, Member 1; Biological Transport; Caffeine; Calcium Channel Blockers; Carcinoma, Ehrlich Tumor; Catechin; Doxorubicin; Drug Resistance, Multiple; Drug Screening Assays, Antitumor; Drug Synergism; Flavonoids; Glutamates; Intracellular Fluid; Leukemia P388; Male; Mice; Neoplasm Transplantation; Phytotherapy; Tea; Theobromine; Verapamil | 2000 |
Inhibiting effects of theanine on caffeine stimulation evaluated by EEG in the rat.
Topics: Animals; Brain; Caffeine; Dose-Response Relationship, Drug; Electroencephalography; Glutamates; Male; Rats; Rats, Wistar | 2000 |
Simultaneous analysis of tea catechins, caffeine, gallic acid, theanine and ascorbic acid by micellar electrokinetic capillary chromatography.
Topics: Ascorbic Acid; Caffeine; Catechin; Chromatography, Micellar Electrokinetic Capillary; Gallic Acid; Glutamates; Hydrogen-Ion Concentration; Phosphates; Reproducibility of Results; Sodium Dodecyl Sulfate; Surface-Active Agents; Tea | 2000 |
Capillary electrophoretic determination of theanine, caffeine, and catechins in fresh tea leaves and oolong tea and their effects on rat neurosphere adhesion and migration.
Topics: Animals; Caffeine; Camellia sinensis; Catechin; Cell Adhesion; Cell Differentiation; Cell Movement; Cells, Cultured; Cerebral Cortex; Electrophoresis, Capillary; Female; Glutamates; Neurons; Plant Leaves; Pregnancy; Rats; Rats, Wistar; Stem Cells; Tea | 2003 |
Changes in the composition of raw tea leaves from the Korean Yabukida plant during high-temperature processing to pan-fried Kamairi-cha green tea.
Topics: Alkaloids; Caffeine; Catechin; Chlorophyll; Chlorophyll A; Chromatography, High Pressure Liquid; Food Handling; Glutamates; Hot Temperature; Korea; Plant Leaves; Tea; Water | 2009 |
[Theanine, EGCG and caffeine determinated by HPLC].
Topics: Caffeine; Catechin; Chromatography, High Pressure Liquid; Glutamates; Sensitivity and Specificity; Tea | 2010 |
Geographical and climatic dependencies of green tea (Camellia sinensis) metabolites: a (1)H NMR-based metabolomics study.
Topics: Amino Acids; Caffeine; Camellia sinensis; Catechin; Climate; Discriminant Analysis; Glutamates; Magnetic Resonance Spectroscopy; Metabolomics; Multivariate Analysis; Republic of Korea | 2010 |
Characterization of tea cultivated at four different altitudes using 1H NMR analysis coupled with multivariate statistics.
Topics: Altitude; Biflavonoids; Caffeine; Camellia sinensis; Catechin; Discriminant Analysis; Glutamates; Least-Squares Analysis; Magnetic Resonance Spectroscopy; Plant Leaves; Quality Control; Sri Lanka; Tea | 2011 |
Metabolic dependence of green tea on plucking positions revisited: a metabolomic study.
Topics: Agriculture; Caffeine; Camellia sinensis; Flavonoids; Gallic Acid; Glutamates; Magnetic Resonance Spectroscopy; Metabolomics; Plant Leaves | 2011 |
L-theanine partially counteracts caffeine-induced sleep disturbances in rats.
Topics: Animals; Caffeine; Dose-Response Relationship, Drug; Glutamates; Male; Rats; Rats, Sprague-Dawley; Sleep Stages; Sleep Wake Disorders; Wakefulness | 2012 |
Ingestion of theanine, an amino acid in tea, suppresses psychosocial stress in mice.
Topics: Adrenal Glands; Adrenocorticotropic Hormone; Animals; Antidepressive Agents; Caffeine; Circadian Rhythm; Corticosterone; Glutamates; Housing, Animal; Hypertrophy; Hypothalamo-Hypophyseal System; Male; Mice; Organ Size; Paroxetine; Pituitary-Adrenal System; Social Dominance; Stress, Psychological; Tea | 2013 |
Beneficial synergistic effects of concurrent treatment with theanine and caffeine against cerebral ischemia-reperfusion injury in rats.
Topics: Animals; Antioxidants; Brain Edema; Brain Ischemia; Caffeine; Cerebral Cortex; Cerebral Infarction; Drug Synergism; Glutamates; Glutathione; Glutathione Peroxidase; Inflammation; Male; Malondialdehyde; Neuroprotective Agents; Random Allocation; Rats; Rats, Sprague-Dawley; Reperfusion Injury; Superoxide Dismutase | 2013 |
Graphene matrix for signal enhancement in ambient plasma assisted laser desorption ionization mass spectrometry.
Topics: Ampyrone; Caffeine; Camellia sinensis; Glutamates; Graphite; Organic Chemicals; Pharmaceutical Preparations; Plant Extracts; Plant Leaves; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization | 2013 |
Quantitative analysis of major constituents in green tea with different plucking periods and their antioxidant activity.
Topics: Benzothiazoles; Biphenyl Compounds; Caffeine; Camellia sinensis; Catechin; Free Radical Scavengers; Free Radicals; Glutamates; Picrates; Plant Extracts; Plant Leaves; Sulfonic Acids | 2014 |
Occurrence and de novo biosynthesis of caffeine and theanine in seedlings of tea (Camellia sinensis).
Topics: Caffeine; Camellia sinensis; Glutamates; Seedlings | 2015 |
Global transcriptome and gene regulation network for secondary metabolite biosynthesis of tea plant (Camellia sinensis).
Topics: Biosynthetic Pathways; Caffeine; Camellia sinensis; Flavonoids; Flowers; Gene Regulatory Networks; Glutamates; Plant Leaves; Plant Proteins; Plant Roots; Real-Time Polymerase Chain Reaction; RNA; Sequence Analysis, RNA; Transcription Factors; Transcriptome | 2015 |
Transcriptomic and phytochemical analysis of the biosynthesis of characteristic constituents in tea (Camellia sinensis) compared with oil tea (Camellia oleifera).
Topics: Caffeine; Camellia; Camellia sinensis; Catechin; Chromatography, High Pressure Liquid; Flowers; Glutamates; Molecular Sequence Data; Plant Leaves; Plant Proteins; Sequence Analysis, DNA; Transcriptome | 2015 |
Effect of theanine and polyphenols enriched fractions from decaffeinated tea dust on the formation of Maillard reaction products and sensory attributes of breads.
Topics: Bread; Caffeine; Dust; Glutamates; Glycation End Products, Advanced; Humans; Maillard Reaction; Phenols; Polyphenols; Pyruvaldehyde; Serum Albumin, Bovine; Tea | 2016 |
Earliest tea as evidence for one branch of the Silk Road across the Tibetan Plateau.
Topics: Burial; Caffeine; Calcium; Camellia sinensis; Glutamates; Human Migration; Humans; Tea; Tibet | 2016 |
The single and synergistic effects of the major tea components caffeine, epigallocatechin-3-gallate and L-theanine on rat sperm viability.
Topics: Animals; Caffeine; Camellia sinensis; Catechin; Cell Survival; Glutamates; Male; Plant Extracts; Rats; Rats, Wistar; Spermatozoa | 2016 |
Determination of volatile organic compounds, catechins, caffeine and theanine in Jukro tea at three growth stages by chromatographic and spectrometric methods.
Topics: Caffeine; Camellia sinensis; Catechin; Chromatography, High Pressure Liquid; Gas Chromatography-Mass Spectrometry; Glutamates; Plant Leaves; Spectrum Analysis; Tea; Volatile Organic Compounds | 2017 |
Anti-stress effects of drinking green tea with lowered caffeine and enriched theanine, epigallocatechin and arginine on psychosocial stress induced adrenal hypertrophy in mice.
Topics: Adrenal Glands; Animals; Arginine; Caffeine; Camellia sinensis; Catechin; Drug Interactions; Glutamates; Hypertrophy; Male; Mice; Phytotherapy; Plant Extracts; Stress, Psychological; Tea; Temperature; Water | 2016 |
iTRAQ-based proteomics monitors the withering dynamics in postharvest leaves of tea plant (Camellia sinensis).
Topics: Caffeine; Camellia sinensis; Gene Expression Regulation, Plant; Glutamates; Humans; Plant Leaves; Plant Proteins; Proteomics | 2018 |
Effect of shading intensity on morphological and color traits and on chemical components of new tea (Camellia sinensis L.) shoots under direct covering cultivation.
Topics: Caffeine; Camellia sinensis; Catechin; Chlorophyll; Color; Crop Production; Glutamates; Japan; Phenotype; Plant Leaves; Seasons; Tea | 2018 |
Gene co-expression network analysis reveals coordinated regulation of three characteristic secondary biosynthetic pathways in tea plant (Camellia sinensis).
Topics: Caffeine; Camellia sinensis; Catechin; Gene Expression Regulation, Plant; Gene Regulatory Networks; Glutamates; High-Throughput Nucleotide Sequencing; Metabolic Networks and Pathways; Plant Leaves; Transcriptome | 2018 |
Metabolite profiling and transcriptomic analyses reveal an essential role of UVR8-mediated signal transduction pathway in regulating flavonoid biosynthesis in tea plants (Camellia sinensis) in response to shading.
Topics: Biosynthetic Pathways; Caffeine; Camellia sinensis; Catechin; Chlorophyll; Flavonoids; Gene Expression Profiling; Glutamates; Light; Metabolome; Metabolomics; Plant Leaves; Plant Proteins; Signal Transduction; Tea; Transcriptome | 2018 |
The growth of tea.
Topics: Animals; Antioxidants; Caffeine; Catechin; China; Crop Production; Crops, Agricultural; Europe; Evolution, Molecular; Genome, Plant; Glutamates; History, 17th Century; History, 19th Century; History, Ancient; History, Medieval; Humans; India; Japan; Phylogeny; Secondary Metabolism; Taste; Tea | 2019 |
The science of tea's mood-altering magic.
Topics: Adenosine; Affect; Alpha Rhythm; Animals; Antioxidants; Behavior; Beta Rhythm; Blood-Brain Barrier; Caffeine; Catechin; Cognition; Dementia; Depression; Exercise; gamma-Aminobutyric Acid; Glutamates; Humans; Hydrocortisone; Life Style; Mental Health; Middle Aged; Stress, Psychological; Tea; Theta Rhythm | 2019 |
Seven-day Green Tea Supplementation Revamps Gut Microbiome and Caecum/Skin Metabolome in Mice from Stress.
Topics: Amino Acids; Animals; Bifidobacterium; Caffeine; Catechin; Cecum; Clostridium butyricum; Fatty Acids; Female; Glutamates; Lactobacillus; Metabolome; Mice; Microbiota; Plant Extracts; Prebiotics; Skin; Stress, Physiological; Tea; Ultraviolet Rays | 2019 |
Alteration of local and systemic amino acids metabolism for the inducible defense in tea plant (Camellia sinensis) in response to leaf herbivory by Ectropis oblique.
Topics: Amino Acids; Animals; Caffeine; Camellia sinensis; Flavonoids; Gene Expression Regulation, Plant; Glutamates; Herbivory; Least-Squares Analysis; Moths; Nitrogen; Plant Leaves; Plant Proteins; Principal Component Analysis; Transcriptome; Up-Regulation | 2020 |
The Biosynthesis of Main Taste Compounds Is Coordinately Regulated by miRNAs and Phytohormones in Tea Plant (
Topics: Caffeine; Camellia sinensis; Catechin; Flavoring Agents; Gene Expression Regulation, Plant; Glutamates; MicroRNAs; Plant Growth Regulators; Plant Leaves; Plant Proteins | 2020 |
Integrated transcriptomics and metabolomics analysis of catechins, caffeine and theanine biosynthesis in tea plant (Camellia sinensis) over the course of seasons.
Topics: Caffeine; Camellia sinensis; Catechin; Gene Expression; Glutamates; Metabolomics; Phenotype; Plant Leaves; Seasons; Transcription Factors; Transcriptome | 2020 |
Antidepressant Effect of Shaded White Leaf Tea Containing High Levels of Caffeine and Amino Acids.
Topics: Amino Acids; Amylases; Animals; Antidepressive Agents; Arginine; Behavior, Animal; Caffeine; Catechin; Female; Glutamates; Humans; Male; Mice; Placebo Effect; Plant Extracts; Plant Leaves; Stress, Psychological; Tea; Young Adult | 2020 |
Exogenous melatonin improves tea quality under moderate high temperatures by increasing epigallocatechin-3-gallate and theanine biosynthesis in Camellia sinensis L.
Topics: Caffeine; Camellia sinensis; Catechin; Climate; Glutamates; Melatonin; Photosynthesis; Plant Leaves; Tea; Temperature | 2020 |
Fermentation characteristics of four non-Saccharomyces yeasts in green tea slurry.
Topics: Caffeine; Camellia sinensis; Fermentation; Food Microbiology; Glutamates; Odorants; Pichia; Saccharomycetales; Tea; Torulaspora; Xylose | 2020 |
Multiple-genotypes transcriptional analysis revealed candidates genes and nucleotide variants for improvement of quality characteristics in tea (Camellia sinensis (L.) O. Kuntze).
Topics: Caffeine; Camellia sinensis; Catechin; Genotype; Glutamates; Oils, Volatile; Plant Proteins; Polymorphism, Single Nucleotide; Protein Interaction Maps; Quantitative Trait, Heritable; Transcriptome | 2021 |
Foliar application of glycinebetaine and Zn fertilizer improves both the apparent and functional qualities of albino tea [
Topics: Betaine; Caffeine; Camellia sinensis; Carotenoids; Catechin; Chlorophyll; Fertilizers; Glutamates; Metabolomics; Nitrogen; Photosynthesis; Plant Leaves; Tea; Zinc | 2021 |
Theanine maintains sleep quality in healthy young women by suppressing the increase in caffeine-induced wakefulness after sleep onset.
Topics: Caffeine; Cross-Over Studies; Double-Blind Method; Female; Humans; Sleep Quality; Wakefulness | 2023 |