ArticleMolecules (Basel, Switzerland)2018
Black Tea Samples Origin Discrimination Using Analytical Investigations of Secondary Metabolites, Antiradical Scavenging Activity and Chemometric Approach.
Article in Molecules (Basel, Switzerland), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 19 papers, 1 of them a synthesis that pooled it.
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Who cites it
19 citing papers in PubMed, 1 synthesis or guideline pooled it, 43 citations in OpenAlex.
- The Association between Tea Consumption and Nasopharyngeal Cancer: A Systematic Review and Meta-AnalysisAsian Pacific journal of cancer prevention : APJCP · 2020Pooled it
- A systematic approach to analyzing catechins and catechin derivatives in Ceylon black tea using liquid chromatography coupled with triple quadrupole mass spectrometry.Food chemistry: X · 2025Article
- Tea Harvesting and Processing Techniques and Its Effect on Phytochemical Profile and Final Quality of Black Tea: A Review.Foods (Basel, Switzerland) · 2023Review
- The Effects of Structure and Oxidative Polymerization on Antioxidant Activity of Catechins and Polymers.Foods (Basel, Switzerland) · 2023Article
- Investigation of the AzoreanAntioxidants (Basel, Switzerland) · 2022Article
- Antiradical Potential of Food Products as a Comprehensive Measure of Their Quality.Foods (Basel, Switzerland) · 2022Article
- Quantitative Comparison and Chemical Profile of Different Botanical Parts ofFrontiers in nutrition · 2022Article
- Analytical Assessment of Bioelements in Various Types of Black Teas from Different Geographical Origins in View of Chemometric Approach.Molecules (Basel, Switzerland) · 2021Article
- Superior Antioxidant Capacity ofAntioxidants (Basel, Switzerland) · 2020Article
- The Role of Extracting Solvents in the Recovery of Polyphenols from Green Tea and Its Antiradical Activity Supported by Principal Component Analysis.Molecules (Basel, Switzerland) · 2020Article
- Article
- Applications of Tea (Molecules (Basel, Switzerland) · 2019Review
- Correlation between Quality and Geographical Origins ofMolecules (Basel, Switzerland) · 2019Article
- Antioxidant Activity and Main Chemical Components of a Novel Fermented Tea.Molecules (Basel, Switzerland) · 2019Article
- Extractable and Non-Extractable Antioxidants.Molecules (Basel, Switzerland) · 2019Article
- The Association between Green and Black Tea Consumption on Successful Aging: A Combined Analysis of the ATTICA and MEDiterranean ISlands (MEDIS) Epidemiological Studies.Molecules (Basel, Switzerland) · 2019Article
- Phytochemical and Antioxidant Studies on a RareOxidative medicine and cellular longevity · 2019Article
- Correction: Koch, W., et al. Black Tea Samples Origin Discrimination Using Analytical Investigations of Secondary Metabolites, Antiradical Scavenging Activity and Chemometric Approach. Molecules 2018, 23, 513.Molecules (Basel, Switzerland) · 2018Article
- Green Tea Quality Evaluation Based on Its Catechins and Metals Composition in Combination with Chemometric Analysis.Molecules (Basel, Switzerland) · 2018Article
Corrections and comments
- Erratum issued
Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A comprehensive study on the composition and antioxidant properties of black tea samples with a chemometric approach was performed via LC-ESI-Q-TOF-MS, DPPH radical scavenging assay, and Folin-Ciocalteu assay (TPC). Marked differences between the teas from seven different countries (China, India, Iran, Japan, Kenya, Nepal, Sri Lanka) were shown. The Indian samples demonstrated the highest total catechin content (184.8 mg/100 mL), the largest TPC and DPPH scavenging potential (58.2 mg/100 mL and 84.5%, respectively). The applied principal component analysis (PCA) and ANOVA revealed several correlations between the level of catechins in tea infusions. EC (epicatechin), ECG (epicatechin gallate), EGC (epigallocatechin), and EGCG (epigallocatechin-3-gallate) content was not correlated with DPPH, gallic acid, and TPC; however, a strong correlation of EC and ECG between themselves and a negative correlation of these two catechins with EGCG and EGC was noted. Interestingly, simple catechins were not found to be responsible for antioxidant properties of the black teas. The samples collected in the higher altitudes were similar.
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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.