Effect of Catechin and Phenolic Composition on the Antioxidant Capacities of Different Types of Tea (Camellia sinensis)

Authors

  • Doaa Abbas Zughair Pharmacognosy department, Pharmacy College, Mustansiriyah University, Qadissiay, Baghdad Governorate, 10052, Iraq
  • Amani Amer Tawfeeq Pharmacognosy department, Pharmacy College, Mustansiriyah University, Qadissiay, Baghdad Governorate, 10052, Iraq

DOI:

https://doi.org/10.22146/ijp.22118

Keywords:

green and black tea antioxidant, catechins in green and black tea, theaflavins and thearubigins, tea's phenols and flavonoids

Abstract

Medicinal plants are the world's most abundant source of organic compounds and are used as pharmaceutical intermediates.  Tea (Camellia sinensis) is the world's most popular beverage, using various processing methods, six different types of tea have been produced—black, green, oolong, white, dark, and yellow—with distinct flavors and aromas. The nature of the final product is determined by the reactions that occur during the manufacturing process. This will affect the chemical composition, color, aroma, and taste. The bulk of tea produced worldwide falls into one of three categories: fermented (black tea), semi-fermented (green tea), or unfermented (green tea). The fermentation processes can affect the chemical composition since catechins in the green tea can be condensed to theaflavins in the black tea due to the oxidation processes. This will affect the antioxidant activities of tea as well as other pharmacological activities. Several researches studied the differences in these activities between different types of tea. In this review several studies are searched to compare their results about the chemical composition of different types of tea (e.g., white, green, oolong, and black tea) and the relationship with their antioxidant activities. The results demonstrate that fermentation plays a crucial role in altering the polyphenol profile of tea. Catechins are the primary contributors to antioxidant capacity in green tea, whereas black tea's antioxidant activity is more dependent on theaflavins and thearubigins. Additionally all the retriviewed studies demonstrated that the green tea has higher antioxidant activity than black tea. Oolong tea, being semi-fermented, exhibits intermediate antioxidant activity

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Published

2026-09-01

How to Cite

Zughair, D. A. ., & Tawfeeq, A. A. . (2026). Effect of Catechin and Phenolic Composition on the Antioxidant Capacities of Different Types of Tea (Camellia sinensis). Indonesian Journal of Pharmacy, 37(3), 481–496. https://doi.org/10.22146/ijp.22118

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Review Article