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Seasonal Variations in Biochemical and Antioxidant Properties in ‘Daisy’ Tangerine Fruits During Fruit Development

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Abstract

In this study the biochemical and antioxidant capacities in the peel and pulp of ‘Daisy’ tangerine were assessed during different stages of fruit development. With advancement of fruit development, the total phenolic content (TPC) in fruits varied from 18.58 to 41.36 mg GAE g−1 and total flavonoid content (TFC) ranged from 2.86 to 6.71 mg RE g−1, respectively. Limonin content was recorded to be up to 1.46 mg g−1 and the pectin content varied from 7.63 to 16.47%. Hesperidin (0.69 to 4.68 mg g−1) was the major flavanone in TFC of ‘Daisy’ fruits. TPC declined with progression of fruit maturity with a similar trend for antioxidant activity. TFC and limonin content exhibited an increasing trend up to the month of August,after which it declined. Pectin content of peel and pulp demonstrated an increasing pattern up to final harvest. Throughout fruit development, peel contained greater concentrations of ferric reducing antioxidant power (FRAP), naringin, limonin and pectin than the pulp. These findings demonstrated that fruits possessed greater antioxidant potential during early stages of development as compared to full mature stage.

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Abbreviations

DPPH:

2,2-Diphenyl-1-picrylhydrazyl

FRAP:

Ferric reducing antioxidant power

OH*:

Hydroxyl radical

TFC:

Total flavonoid content

TPC:

Total phenolic content

TPTZ:

2,4,6-Tripyridy-S-triazine

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Acknowledgements

The research support provided by Punjab Agricultural University has been duly acknowledged.

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Correspondence to T. S. Chahal.

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Conflict of interest

T.S. Chahal, J. Singh, P. Gill, S. Grewal and A. Sinha declare that they have no competing interests.

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Results presented in this paper are original and the note may be retained or deleted as per journal format.

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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.

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Chahal, T.S., Singh, J., Gill, P.P.S. et al. Seasonal Variations in Biochemical and Antioxidant Properties in ‘Daisy’ Tangerine Fruits During Fruit Development. Erwerbs-Obstbau 65, 1685–1692 (2023). https://doi.org/10.1007/s10341-023-00881-0

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  • DOI: https://doi.org/10.1007/s10341-023-00881-0

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