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Comparison of bioactive compound contents and in vitro and ex vivo antioxidative activities between peel and flesh of pear (Pyrus pyrifolia Nakai)

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Abstract

We compared chemical constituents and antioxidative activities between the flesh and peel of two Asian pears (Pyrus pyrifolia Nakai cv. Niitaka and Chuhwangbae). Total phenolic, flavonoid, and ascorbic acid contents in the peels were higher than those in the flesh. However, total tocopherol content between peels and flesh was not different. The peels exhibited higher free radical scavenging activities in the in vitro models of DPPH, ABTS+, nitrite radicals, and reducing capabilities than those of the flesh. Pear fruit extracts significantly prevented 3T3-L1 cells from undergoing H2O2-induced oxidation and the effect was higher by the peel extract than by the flesh extract. In addition, blood plasma of rats administered the peel extract showed higher antioxidative activity than that of rats administered the flesh extract. These results suggest that consumption of unpeeled Asian pear fruit may effectively increase antioxidant activity in the body.

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Authors and Affiliations

  1. Korea Pear Research Organization, Chonnam National University, Gwangju, 500-757, Korea

    Sang-Hyun Lee, Wol-Soo Kim & Jae-Hak Moon

  2. Department of Food Science & Technology, and Functional Food Research Center, Chonnam National University, Gwangju, 500-757, Korea

    Jeong-Yong Cho, Hang Yeon Jeong, Da Eun Jeong, Duwoon Kim, Se-Young Cho & Jae-Hak Moon

  3. Department of Horticulture, Chonnam National University, Gwangju, 500-757, Korea

    Wol-Soo Kim

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  1. Sang-Hyun Lee
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Correspondence to Jae-Hak Moon.

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Lee, SH., Cho, JY., Jeong, H.Y. et al. Comparison of bioactive compound contents and in vitro and ex vivo antioxidative activities between peel and flesh of pear (Pyrus pyrifolia Nakai). Food Sci Biotechnol 24, 207–216 (2015). https://doi.org/10.1007/s10068-015-0028-9

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  • DOI: https://doi.org/10.1007/s10068-015-0028-9

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