ArticleMolecules (Basel, Switzerland)2018
Green Tea Quality Evaluation Based on Its Catechins and Metals Composition in Combination with Chemometric Analysis.
Article in Molecules (Basel, Switzerland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
42 citing papers in PubMed, 2 syntheses or guidelines pooled it, 110 citations in OpenAlex.
- Anti-Influenza with Green Tea Catechins: A Systematic Review and Meta-Analysis.Molecules (Basel, Switzerland) · 2021Pooled it
- Bioactive Compounds and Their Effect on Blood Pressure-A Review.Nutrients · 2020Pooled it
- Evaluation of Neonatal Cardiotoxicity Following Maternal Green Tea Extract Consumption During Pregnancy: An Experimental Rat Study on the Cytochrome c/Caspase-9/Caspase-3 Pathway.Medicina (Kaunas, Lithuania) · 2026Article
- A Review of the Impact of Green Tea (Current pharmaceutical design · 2026Review
- Epigallocatechin Gallate as a Molecular Therapeutic in Heart Failure and Cardio-Oncology: Mechanistic Pathways and Translational Perspectives.International journal of molecular sciences · 2025Review
- Via entropy analysis (EA) and systematic cluster analysis (SCA), multi-index chemometric analysis of 20 amino acids, trace elements, etc., of five green teas from Guizhou, China.BMC chemistry · 2025Article
- Green Tea: Current Knowledge and Issues.Foods (Basel, Switzerland) · 2025Review
- Article
- Optimizing catechin extraction from green tea waste: Comparative analysis of hot water, ultrasound-assisted, and ethanol methods for enhanced antioxidant recovery.Food science & nutrition · 2024Article
- Comparative studies on the antioxidant, anticancer and anti-inflammatory activities of green tea, orthodox black tea and CTC black tea.Journal of food science and technology · 2024Article
- Influence of Thermal Treatment on the Composition ofInternational journal of molecular sciences · 2024Article
- Phytocompounds-based therapeutic approach: Investigating curcumin and green tea extracts on MCF-7 breast cancer cell line.Journal, genetic engineering & biotechnology · 2024Article
- Study on the Dynamic Changes in Non-Volatile Metabolites of Rizhao Green Tea Based on Metabolomics.Molecules (Basel, Switzerland) · 2023Article
- Tea's anti-obesity properties, cardiometabolic health-promoting potentials, bioactive compounds, and adverse effects: A review focusing on white and green teas.Food science & nutrition · 2023Review
- Impact of Thermal Processing on the Composition ofFoods (Basel, Switzerland) · 2023Article
- Elemental Profiling of North-East Indian Tea (Camellia sinensis) by ICP-MS and Assessment of Associated Health Risk.Biological trace element research · 2023Article
- Anticancer Therapeutic Effects of Green Tea Catechins (GTCs) When Integrated with Antioxidant Natural Components.Molecules (Basel, Switzerland) · 2023Review
- Recent Advances in the Development of Oxidoreductase-Based Biosensors for Detection of Phenolic Antioxidants in Food and Beverages.ACS omega · 2022Review
- Green Tea Catechins: Nature's Way of Preventing and Treating Cancer.International journal of molecular sciences · 2022Review
- Nanocomposite of MgFeBiosensors · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Green tea infusions are one of the most popular beverages consumed across the world, especially is Asian countries. Green tea quality is primarily based on catechin content, however, the concentration of elements could also significantly influence its biological properties and thus quality and safety. The main purpose of the present study was the evaluation of catechin, antioxidant activity and metal content (K, Na, Ca, Mg, Fe, Mn, Cu, Zn, Cr, Pb, Cd and Ni) in different green tea types cultivated in Japan, Sri Lanka, South Korea, India, China and Japan. The chemical analysis of samples was performed using LC-ESI-Q-TOF-MS for organic constituents and atomic absorption spectrometry (flame and electrothermal) method for inorganic ones. The obtained results were subjected to chemometric elaboration. EGC (213 mg/100 mL of the tea infusion in South Korean Jeoncha) and EGCG (124 mg/100 mL in Japanese Sencha) were the dominant catechins in all green tea samples. Chinese and Indian green tea samples contained the highest concentration of toxic heavy metals, however these values were far below appropriate limitations for green teas. PCA revealed significant similarities between Japanese samples and Korean Jeoncha. In general the latter one was evaluated to have the best quality based on the investigated parameters.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.