Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India

Tocklai vegetative (TV) cultivars are extensively planted in the tea-growing regions of Northeast India. The present investigation explores the impact of season on the total polyphenol (TP) content and the antioxidant activity of thirty-one TV cultivars (TV1–TV31) and four other commercially popular...

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Bibliographic Details
Published in:Foods 2023-08, Vol.12 (17), p.3196
Main Authors: Deka, Himangshu, Sarmah, Podma Pollov, Chowdhury, Pritom, Rajkhowa, Kaberi, Sabhapondit, Santanu, Panja, Saumik, Karak, Tanmoy
Format: Article
Language:English
Subjects:
Amino acids
Analysis
antioxidant activity
Antioxidants
Bivariate analysis
Cocoa
Cultivars
Food science
harvesting season
Lipid peroxidation
Lipids
Monsoons
Peroxidation
Polyphenols
Seasons
Tea
Tocklai vegetative (TV) cultivar
total polyphenol
Wind
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Summary:Tocklai vegetative (TV) cultivars are extensively planted in the tea-growing regions of Northeast India. The present investigation explores the impact of season on the total polyphenol (TP) content and the antioxidant activity of thirty-one TV cultivars (TV1–TV31) and four other commercially popular cultivars, namely, Betjan, Kharijan, S.3A/3, and T.3E/3. The TP content of the cultivars was observed to be highest in the monsoon season, with values ranging from 230.57 to 283.53 mg g−1. In the pre-monsoon season and autumn, the TP content ranged from 197.87 to 256.77 mg g−1 and from 169.97 to 223.50 mg g−1, respectively. Antioxidant activity was measured through DPPH, ABTS, FRAP, and lipid peroxidation inhibition assays. The cultivars showed the highest antioxidant activity in the monsoon in tandem with TP content. A bivariate correlation indicated a highly significant (p ≤ 0.01) positive correlation of antioxidant activity with TP content (R2 = 0.83–0.96).
ISSN:2304-8158
2304-8158
DOI:10.3390/foods12173196