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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MDPI AG
2023-08-01
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| Series: | Foods |
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| Online Access: | https://www.mdpi.com/2304-8158/12/17/3196 |
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| author | Himangshu Deka Podma Pollov Sarmah Pritom Chowdhury Kaberi Rajkhowa Santanu Sabhapondit Saumik Panja Tanmoy Karak |
| author_facet | Himangshu Deka Podma Pollov Sarmah Pritom Chowdhury Kaberi Rajkhowa Santanu Sabhapondit Saumik Panja Tanmoy Karak |
| author_sort | Himangshu Deka |
| collection | DOAJ |
| description | 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<sup>−1</sup>. In the pre-monsoon season and autumn, the TP content ranged from 197.87 to 256.77 mg g<sup>−1</sup> and from 169.97 to 223.50 mg g<sup>−1</sup>, 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 (<i>p</i> ≤ 0.01) positive correlation of antioxidant activity with TP content (R<sup>2</sup> = 0.83–0.96). |
| first_indexed | 2024-03-10T23:24:12Z |
| format | Article |
| id | doaj.art-ee553bd70b68463994a391cffa05e9b2 |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T23:24:12Z |
| publishDate | 2023-08-01 |
| publisher | MDPI AG |
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| series | Foods |
| spelling | doaj.art-ee553bd70b68463994a391cffa05e9b22023-11-19T08:08:14ZengMDPI AGFoods2304-81582023-08-011217319610.3390/foods12173196Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast IndiaHimangshu Deka0Podma Pollov Sarmah1Pritom Chowdhury2Kaberi Rajkhowa3Santanu Sabhapondit4Saumik Panja5Tanmoy Karak6Biochemistry Department, Tocklai Tea Research Institute, Jorhat 785008, Assam, IndiaBiochemistry Department, Tocklai Tea Research Institute, Jorhat 785008, Assam, IndiaBiotechnology Department, Tocklai Tea Research Institute, Jorhat 785008, Assam, IndiaBiochemistry Department, Tocklai Tea Research Institute, Jorhat 785008, Assam, IndiaBiochemistry Department, Tocklai Tea Research Institute, Jorhat 785008, Assam, IndiaEnvironment, Health and Safety, University of California, San Francisco 505 Parnassus Ave, San Francisco, CA 94143, USADepartment of Soil Science, School of Agricultural Sciences, Nagaland University, Medziphema Campus, Medziphema 797106, Nagaland, IndiaTocklai 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<sup>−1</sup>. In the pre-monsoon season and autumn, the TP content ranged from 197.87 to 256.77 mg g<sup>−1</sup> and from 169.97 to 223.50 mg g<sup>−1</sup>, 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 (<i>p</i> ≤ 0.01) positive correlation of antioxidant activity with TP content (R<sup>2</sup> = 0.83–0.96).https://www.mdpi.com/2304-8158/12/17/3196antioxidant activityharvesting seasonTocklai vegetative (TV) cultivartotal polyphenol |
| spellingShingle | Himangshu Deka Podma Pollov Sarmah Pritom Chowdhury Kaberi Rajkhowa Santanu Sabhapondit Saumik Panja Tanmoy Karak Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India Foods antioxidant activity harvesting season Tocklai vegetative (TV) cultivar total polyphenol |
| title | Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India |
| title_full | Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India |
| title_fullStr | Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India |
| title_full_unstemmed | Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India |
| title_short | Impact of the Season on Total Polyphenol and Antioxidant Properties of Tea Cultivars of Industrial Importance in Northeast India |
| title_sort | impact of the season on total polyphenol and antioxidant properties of tea cultivars of industrial importance in northeast india |
| topic | antioxidant activity harvesting season Tocklai vegetative (TV) cultivar total polyphenol |
| url | https://www.mdpi.com/2304-8158/12/17/3196 |
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