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Fractionation, antioxidant and inhibitory activity of Thai mango seed kernel extracts

Author

Listed:
  • Chaianun NAMNGAM

    (Department of Food Science and Technology Faculty of Agro-industry, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand)

  • Supakorn BOONYUEN

    (Department of Chemistry, Faculty of Science and Technology, Thammasat University, Bangkok, Thailand)

  • Praphan PINSIRODOM

Abstract

Mango seed kernel extracts (MSKE) from Kaew and Choke-Anan mango cultivars were fractionated using Sephadex LH-20 column chromatography. Antioxidant activity and the inhibitory effects on tyrosinase, 5-lipoxygenase, hyaluronidase and α-glucosidase of MSKE fractions were evaluated. The key components of polyphenol, found in the most active fraction, were identified using LC-ESI-MS. Three major isolates were obtained from both cultivars of the MSKE with the absorb­ance being higher for Choke-Anan than Kaew. Fraction 3 of MSKE from both cultivars showed significantly (P ≤ 0.05) higher antioxidant activity and 5-lipoxygenase, hyaluronidase and α-glucosidase inhibitory activity with Choke-Anan more effective than Kaew. Six different polyphenols were found in fraction 3 of both cultivars. These were tri-o-galloyl-glucoside, tetra-o-galloyl-glucoside, maclurin tri-o-galloyl-glucoside, penta-o-galloyl-glucoside, hexa-o-galloyl-glucoside, and hepta-o-galloyl-glucoside. In the MSKE from Choke-Anan, hexa-o-galloyl-glucoside, and tetra-o-galloyl-glucoside were the two major components, whereas in the MSKE from Kaew tetra-o-galloyl-glucoside was the only major component. The results indicate that MSKE is a suitable by-product that could be utilised for adding value to the mango processing industry and could represent a valuable input into functional foods and pharmaceutical production.

Suggested Citation

  • Chaianun NAMNGAM & Supakorn BOONYUEN & Praphan PINSIRODOM, 2018. "Fractionation, antioxidant and inhibitory activity of Thai mango seed kernel extracts," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 36(1), pages 8-15.
    • Handle: RePEc:caa:jnlcjf:v:36:y:2018:i:1:id:225-2017-cjfs
    DOI: 10.17221/225/2017-CJFS
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