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Antioxidant Abilities, Phenolics and Flavonoids Contents in the Ethanolic Extracts of the Stems and Leaves of Different Stevia rebaudiana Bert Lines

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Abstract

We carried out a systematic research on antioxidant activities of ethanolic extracts of aerial parts (stems and leaves) of four selected Stevia rebaudiana lines. Total phenolics and flavonoids contents of different S. rebaudiana lines were in the range of 55.64–58.35 mg (gallic acid) g−1 dw and 48.29–60.33 mg (rutin) g−1 dw, respectively. The contents of phenolics and flavonoids, and antioxidant capacities in the leaves of S. rebaudiana were twofold to fivefold significantly higher than that in stems of S. rebaudiana. SR-3 had the highest total phenolics and flavonoids contents and the strongest scavenging abilities to DPPH and ABTS radicals. DPPH and TEAC assays were equal to evaluate the antioxidant ability of ethanolic extract of S. rebaudiana. The obtained results clearly indicated that the leaves of S. rebaudiana had an important value of utilization and development as a natural antioxidant agent and further studies for SR-3 should be put into practice.

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Acknowledgments

The authors thank Miss Q. Liu for providing convenient experiment environment and equipments. We are also grateful to Dr. Y. W. Xu for giving pertinent suggestions in article’s peer view.

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  1. Agronomy College, Sichuan Agricultural University, Chengdu, 611130, China

    Jianwei Zeng, Wenguo Cai, Wenting Yang & Wei Wu

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  1. Jianwei Zeng
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  2. Wenguo Cai
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  3. Wenting Yang
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  4. Wei Wu
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Correspondence to Jianwei Zeng.

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Zeng, J., Cai, W., Yang, W. et al. Antioxidant Abilities, Phenolics and Flavonoids Contents in the Ethanolic Extracts of the Stems and Leaves of Different Stevia rebaudiana Bert Lines. Sugar Tech 15, 209–213 (2013). https://doi.org/10.1007/s12355-013-0210-4

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  • DOI: https://doi.org/10.1007/s12355-013-0210-4

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