Theanine
View article: Colorimetric Detection of Gallic Acid in Tea Based on the Catalase-like Activity of Co3O4-NC Nanozyme
Colorimetric Detection of Gallic Acid in Tea Based on the Catalase-like Activity of Co3O4-NC Nanozyme Open
Objective: The present study was aimed to develop a rapid colorimetric method for the detection of gallic acid in tea based on the catalase-like activity of Co3O4-NC nanozyme. Methods: The Co3O4-NC was prepared by calcination of the compos…
View article: Biochemical, histopathological, and immunohistochemical study on the ameliorative effect of crocin against lipopolysaccharide‑induced hippocampal toxicity in male albino rats
Biochemical, histopathological, and immunohistochemical study on the ameliorative effect of crocin against lipopolysaccharide‑induced hippocampal toxicity in male albino rats Open
Background Lipopolysaccharide (LPS)-induced neuroinflammation is widely used as an animal model for studying the mechanisms of neuroinflammation. Crocin, an active component of saffron ( Crocus sativus L ), possesses several beneficial pro…
View article: Metabolomic profiling of indigenous lactic acid bacteria reveals functional traits shaping the flavor and bioactivity of Ecuadorian coffee
Metabolomic profiling of indigenous lactic acid bacteria reveals functional traits shaping the flavor and bioactivity of Ecuadorian coffee Open
Introduction Microbial fermentation by lactic acid bacteria (LAB) significantly influences the flavor, quality, and functional attributes of coffee. However, the specific metabolic outputs and roles of LAB native strains to distinct Coffea…
View article: Supplementary file 1_Metabolomic profiling of indigenous lactic acid bacteria reveals functional traits shaping the flavor and bioactivity of Ecuadorian coffee.docx
Supplementary file 1_Metabolomic profiling of indigenous lactic acid bacteria reveals functional traits shaping the flavor and bioactivity of Ecuadorian coffee.docx Open
Introduction Microbial fermentation by lactic acid bacteria (LAB) significantly influences the flavor, quality, and functional attributes of coffee. However, the specific metabolic outputs and roles of LAB native strains to distinct Coffea…
View article: Selective adsorption of metabolites by different size of TiO2 nano particles from tea infusion
Selective adsorption of metabolites by different size of TiO2 nano particles from tea infusion Open
Tea is rich in catechins, amino acids, and carbohydrates, which are the main flavor components of tea. However, excessive amount of catechins contribute to the bitter and astringent tastes of tea, thereby affecting the quality of tea. In t…
View article: Nutritional co-therapy with vitamin D and L-theanine reduces unpredictable mild chronic stress (UCMS) in aged mice by restoring alpha-oscillations, dopamine levels and behavioral improvement
Nutritional co-therapy with vitamin D and L-theanine reduces unpredictable mild chronic stress (UCMS) in aged mice by restoring alpha-oscillations, dopamine levels and behavioral improvement Open
View article: L-Theanine
L-Theanine Open
View article: Theanine boosts frontal theta and hippocampal beta and gamma oscillations for familiarity in object recognition
Theanine boosts frontal theta and hippocampal beta and gamma oscillations for familiarity in object recognition Open
Object recognition memory encourages animals to distinguish between new and known objects, supported by neural activity in the hippocampus, prefrontal cortex, and perirhinal cortex. Theanine, a non-proteinogenic amino acid derivative from …
View article: Pharmaceutical Activities of Theanine: A Phytochemical Nutrient
Pharmaceutical Activities of Theanine: A Phytochemical Nutrient Open
Theanine, first isolated from tea ( Camellia sinensis (L.) O. Kuntze), has been recognized for its multiple pharmaceutical functions. Typically, theanine is known for its protective effect on neural disorders. In this review, the neuroprot…
View article: ANALYSIS OF L-THEANINE ON GENE EXPRESSION ON UNPREDICTABLE CHRONIC MILD STRESS INDUCED NEURONAL DAMAGE IN WISTAR RATS
ANALYSIS OF L-THEANINE ON GENE EXPRESSION ON UNPREDICTABLE CHRONIC MILD STRESS INDUCED NEURONAL DAMAGE IN WISTAR RATS Open
Objective: The modulatory role of L-theanine on the regulation of gene expression in unpredictable chronic mild stress (UCMS) induced neuronal impairment in rats is the primary objective of this study. Methods: Adult male Wistar rats were …
View article: Theanine modulation of monoamine metabolism visualized by derivatized imaging mass spectrometry
Theanine modulation of monoamine metabolism visualized by derivatized imaging mass spectrometry Open
View article: Determination of L-Theanine and Caffeine Contents in Tea Infusions with Different Fermentation Degrees and Brewing Conditions Using the Chromatographic Method
Determination of L-Theanine and Caffeine Contents in Tea Infusions with Different Fermentation Degrees and Brewing Conditions Using the Chromatographic Method Open
This study aimed to determine the caffeine and L-theanine contents in tea infusions prepared under varying fermentation degrees, brewing conditions (temperature and time), and serving methods (tea bag/loose-leaf). Infusions of six tea type…
View article: A Shading‐Responsive bHLH Transcription Factor (<i>CsPIF7</i>) Promotes Theanine Biosynthesis in Tea Plants (<i>Camellia sinensis</i>)
A Shading‐Responsive bHLH Transcription Factor (<i>CsPIF7</i>) Promotes Theanine Biosynthesis in Tea Plants (<i>Camellia sinensis</i>) Open
Shading is a widely applied strategy to increase theanine and chlorophyll levels in tea leaves during matcha production. However, the regulatory mechanism of theanine accumulation under shading conditions remains elusive. Through visualiza…
View article: Effect of L-theanine on cerebellar granule cell migration related to cognitive disorders
Effect of L-theanine on cerebellar granule cell migration related to cognitive disorders Open
Mice's anxiety symptoms improved based on their performance on the maze test after treatment with L-theanine at 5 mg/ml. However, L-theanine at 0.05 mg/ml enhanced learning and memory abilities. Compared to other concentratio…
View article: CsMYB213‐CsbHLH35 module regulates theanine biosynthesis in tea plants (<i>Camellia sinensis</i> L.)
CsMYB213‐CsbHLH35 module regulates theanine biosynthesis in tea plants (<i>Camellia sinensis</i> L.) Open
Summary Theanine is a non‐protein free amino acid accumulated in tea plant leaves and makes a major contribution to the unique umami and sweet taste and a multitude of human health benefits of tea. However, its biosynthesis and transcripti…
View article: Effect of Ammonium:Nitrate Application Ratios on Growth and Nitrogen Metabolism of Tea Plants (<scp><i>Camellia sinensis</i></scp> L.)
Effect of Ammonium:Nitrate Application Ratios on Growth and Nitrogen Metabolism of Tea Plants (<span><i>Camellia sinensis</i></span> L.) Open
Tea plants ( Camellia sinensis L.) use ammonium and nitrate as the main sources of nitrogen (N), but they respond differently to these two compounds. In this study, we investigated the effect of the ammonium:nitrate ratio on tea plant grow…
View article: A Comparative Multianalytical Approach to the Characterization of Different Grades of Matcha Tea (Camellia sinensis (L.) Kuntze)
A Comparative Multianalytical Approach to the Characterization of Different Grades of Matcha Tea (Camellia sinensis (L.) Kuntze) Open
Matcha, a finely powdered green tea, has been cherished in Japan for centuries, used in the traditional tea ceremony and nowadays also valued for its health-promoting properties. Cultivated under shaded conditions to enhance chlorophyll pr…
View article: Opposing regulation of L-theanine biosynthesis by CsWRKY65 and CsWRKY69 in tea plant roots
Opposing regulation of L-theanine biosynthesis by CsWRKY65 and CsWRKY69 in tea plant roots Open
View article: PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.)
PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.) Open
The accumulation of nanoplastics (NPs) in crops has drawn global attention due to their potential exacerbation in human health through food chain transfer. The present study investigated the distribution, accumulation, and phytotoxicity of…
View article: PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.)
PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.) Open
The accumulation of nanoplastics (NPs) in crops has drawn global attention due to their potential exacerbation in human health through food chain transfer. The present study investigated the distribution, accumulation, and phytotoxicity of…
View article: PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.)
PolystyreneNanoplastics Compromise the NutritionalValue of Radish (Raphanus sativus L.) Open
The accumulation of nanoplastics (NPs) in crops has drawn global attention due to their potential exacerbation in human health through food chain transfer. The present study investigated the distribution, accumulation, and phytotoxicity of…
View article: Effects of Tea (<i>Camellia sinensis</i>) or its Bioactive Compounds <scp>l</scp>-Theanine or <scp>l</scp>-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Effects of Tea (<i>Camellia sinensis</i>) or its Bioactive Compounds <span>l</span>-Theanine or <span>l</span>-Theanine plus Caffeine on Cognition, Sleep, and Mood in Healthy Participants: A Systematic Review and Meta-Analysis of Randomized Controlled Trials Open
Context The bioactive compounds found in tea from Camellia sinensis, namely theanine, caffeine, and polyphenols, can potentially improve short-term and long-term health outcomes. Objective The aim of this study was to assess the effects of…
View article: The Histone Methyltransferase PRMT5 Mediates the Epigenetic Modification to Modulate High Temperatures and Tea Quality in Tea Plants (<i>Camellia sinensis</i>)
The Histone Methyltransferase PRMT5 Mediates the Epigenetic Modification to Modulate High Temperatures and Tea Quality in Tea Plants (<i>Camellia sinensis</i>) Open
High temperatures significantly affect tea yield and quality. Arginine methylation is crucial for plant growth and environmental adaptation. However, its role in regulating plant responses to high temperatures remains unclear. In this stud…
View article: Synergistic neuroprotective and cognitive-enhancing effects of Walnut Peptide and Theanine in human brain organoid and mouse stress models
Synergistic neuroprotective and cognitive-enhancing effects of Walnut Peptide and Theanine in human brain organoid and mouse stress models Open
Stress is a prevalent mental health concern emerging predominantly in late adolescence or early adulthood. Since 2007, the Food and Drug Administration (FDA) has not approved any novel anxiolytic pharmaceuticals, fueling interest in nutrit…
View article: Natural Copper Ion Scavenger: Investigation of the Hepatoprotective Effects of Green Tea Extract in Toxic-Milk Mice with Wilson’s Disease Model
Natural Copper Ion Scavenger: Investigation of the Hepatoprotective Effects of Green Tea Extract in Toxic-Milk Mice with Wilson’s Disease Model Open
Wilson’s disease (WD) is an inherited disorder characterized by abnormal copper metabolism with complex pathological features. Currently, the mechanism of copper overload-induced hepatic injury is unclear. Green tea is a natural chelator, …
View article: L-Theanine Metabolism in Tea Plants: Biological Functions and Stress Tolerance Mechanisms
L-Theanine Metabolism in Tea Plants: Biological Functions and Stress Tolerance Mechanisms Open
L-theanine, a unique non-protein amino acid predominantly found in tea plants (Camellia sinensis), plays a pivotal role in plant responses to abiotic stress and significantly influences tea quality. In this review, the metabolism and trans…
View article: Effects of Extraction Temperature of Protein from Date Palm Pollen on the Astringency Taste of Tea
Effects of Extraction Temperature of Protein from Date Palm Pollen on the Astringency Taste of Tea Open
The astringency of tea, predominantly attributed to epigallocatechin gallate (EGCG), plays a crucial role in shaping its overall quality, and plant-based proteins are gaining popularity as a preferred alternative to milk-based proteins for…
View article: New insights into the indirect reduction of starch digestibility by L-theanine: Elucidation of the mechanism of α-amylase/α-glucosidase inhibition based on spectroscopic and computational perspectives
New insights into the indirect reduction of starch digestibility by L-theanine: Elucidation of the mechanism of α-amylase/α-glucosidase inhibition based on spectroscopic and computational perspectives Open
View article: L-Theanine Extends the Lifespan of Caenorhabditis elegans by Reducing the End Products of Advanced Glycosylation
L-Theanine Extends the Lifespan of Caenorhabditis elegans by Reducing the End Products of Advanced Glycosylation Open
L-theanine, a non-protein amino acid naturally occurring in tea leaves, is recognized for its antioxidant, anti-inflammatory, and neuroprotective properties. Despite its known benefits, the mechanisms by which L-theanine influences lifespa…
View article: l-theanine: From tea leaf to trending supplement – does the science match the hype for brain health and relaxation?
l-theanine: From tea leaf to trending supplement – does the science match the hype for brain health and relaxation? Open
l-Theanine is a unique non-protein amino acid found abundantly in tea leaves. Interest in its potential use as a dietary supplement has surged recently, especially claims related to promoting relaxation and cognitive enhancement. This revi…