Antioxidant capacity and major polyphenol composition of teas as affected by geographical location, plantation elevation and leaf grade
- PMID: 29120758
- DOI: 10.1016/j.foodchem.2017.09.126
Antioxidant capacity and major polyphenol composition of teas as affected by geographical location, plantation elevation and leaf grade
Abstract
Tea polyphenols have been a topic of discussion due to their health benefits. Nevertheless, detailed studies on the antioxidant capacity and polyphenol contents of teas in relation to factors including geographical locations, plantation elevations and leaf grades have been limited. In this study, 53 tea samples were analysed to determine the individual and total catechin and theaflavin contents by HPLC and the total antioxidant capacity by Oxygen Radical Absorbance Capacity (ORAC) methods. Results show that the polyphenol (catechins and theaflavins) contents were significantly influenced by plantation location. Black tea from low plantation elevation contained 22-28% more polyphenols than those from high elevation. Small tea leaves had up to 15% more polyphenols than larger leaves from similar elevation. The results were further confirmed by Principal Composition Analysis (PCA), which grouped the black and green tea samples into 3 different clusters, respectively.
Keywords: Antioxidant capacity; Catechins; Tea polyphenols; Theaflavins.
Copyright © 2017 Elsevier Ltd. All rights reserved.
Similar articles
-
Synthesis of Theaflavins and Their Functions.Molecules. 2018 Apr 16;23(4):918. doi: 10.3390/molecules23040918. Molecules. 2018. PMID: 29659496 Free PMC article. Review.
-
The synergistic potential of various teas, herbs and therapeutic drugs in health improvement: a review.J Sci Food Agric. 2017 Nov;97(14):4679-4689. doi: 10.1002/jsfa.8472. Epub 2017 Jul 27. J Sci Food Agric. 2017. PMID: 28585285 Review.
-
The fortification of tea with sweeteners and milk and its effect on in vitro antioxidant potential of tea product and glutathione levels in an animal model.Food Chem. 2014 Feb 15;145:145-53. doi: 10.1016/j.foodchem.2013.08.016. Epub 2013 Aug 11. Food Chem. 2014. PMID: 24128460
-
Total polyphenols, catechin profiles and antioxidant activity of tea products from purple leaf coloured tea cultivars.Food Chem. 2013 Feb 15;136(3-4):1405-13. doi: 10.1016/j.foodchem.2012.09.066. Epub 2012 Sep 28. Food Chem. 2013. PMID: 23194541
-
White and green teas (Camellia sinensis var. sinensis): variation in phenolic, methylxanthine, and antioxidant profiles.J Food Sci. 2010 Aug 1;75(6):C541-8. doi: 10.1111/j.1750-3841.2010.01705.x. J Food Sci. 2010. PMID: 20722909
Cited by
-
Mitigation Potential of Herbal Extracts and Constituent Bioactive Compounds on Salmonella in Meat-Type Poultry.Animals (Basel). 2024 Apr 3;14(7):1087. doi: 10.3390/ani14071087. Animals (Basel). 2024. PMID: 38612326 Free PMC article. Review.
-
Gas exchange and chlorophyll fluorescence responses of Camellia sinensis grown under various cultivations in different seasons.Bot Stud. 2024 Mar 22;65(1):10. doi: 10.1186/s40529-024-00416-0. Bot Stud. 2024. PMID: 38514589 Free PMC article.
-
Comparative Metabolomics Study of Four Kinds of Xihu Longjing Tea Based on Machine Fixing and Manual Fixing Methods.Foods. 2023 Dec 14;12(24):4486. doi: 10.3390/foods12244486. Foods. 2023. PMID: 38137290 Free PMC article.
-
Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India.Foods. 2023 Aug 24;12(17):3196. doi: 10.3390/foods12173196. Foods. 2023. PMID: 37685130 Free PMC article.
-
Effects of Key Components on the Antioxidant Activity of Black Tea.Foods. 2023 Aug 21;12(16):3134. doi: 10.3390/foods12163134. Foods. 2023. PMID: 37628133 Free PMC article.
MeSH terms
Substances
LinkOut - more resources
Full Text Sources
Other Literature Sources
Medical
