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Characterisation of the physicochemical properties of two species of dragon fruit seed oil (Hylocereus undatus and Hylocereus polyrhizus)

Wijitra Liaotrakoon (UGent) , Nathalie De Clercq (UGent) , Vera Van Hoed (UGent) and Koen Dewettinck (UGent)
Author
Organization
Abstract
Oil was extracted from the seed of white-flesh (Hylocereus undatus; WFSO) and red-flesh (Hylocereus polyrhizus; RFSO) dragon fruits using a cold extraction process with petroleum ether. The delta-, gamma-, and alpha-tocopherol content, fatty acid and triacylglycerol composition, thermal and rheological properties of the extracted dragon fruit seed oils were analysed. The results showed that the dragon fruit seeds contained a high amount of oil up to 34.13%. The principal tocopherol in WFSO and RFSO was alpha-tocopherol. The total tocopherols content of RFSO was 1.6 times higher than that of WFSO. The three main fatty acids in these oils were palmitic acid (C16:0), oleic acid (C18:1) and linoleic acid (C18:2). The seed oil is interesting from a nutritional point of view: the essential fatty acid content of WFSO and RFSO counts up to 55.64% and 45.37% respectively. The main triacylglycerol in WFSO and RFSO was LLL, LLO, PLL, LOO and PLO. The thermal curves for WFSO and RFSO consisted of two main endothermic peaks with a broader temperature range around these peaks of -49.58 and 3.41 °C. The apparent viscosity of WFSO and RFSO was similar (14.24-14.32 mPa.s). Thus the dragon fruit seed oils can be considered as a new source of tocopherols and essential fatty acids.
Keywords
Dragon fruit, Seed oil, Essential fatty acid, Tocopherol

Citation

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MLA
Liaotrakoon, Wijitra, Nathalie De Clercq, Vera Van Hoed, et al. “Characterisation of the Physicochemical Properties of Two Species of Dragon Fruit Seed Oil (Hylocereus Undatus and Hylocereus Polyrhizus).” 102nd AOCS Annual Meeting & Expo, Abstracts. 2011. Print.
APA
Liaotrakoon, W., De Clercq, N., Van Hoed, V., & Dewettinck, K. (2011). Characterisation of the physicochemical properties of two species of dragon fruit seed oil (Hylocereus undatus and Hylocereus polyrhizus). 102nd AOCS annual meeting & expo, Abstracts. Presented at the 102nd AOCS Annual Meeting & Expo.
Chicago author-date
Liaotrakoon, Wijitra, Nathalie De Clercq, Vera Van Hoed, and Koen Dewettinck. 2011. “Characterisation of the Physicochemical Properties of Two Species of Dragon Fruit Seed Oil (Hylocereus Undatus and Hylocereus Polyrhizus).” In 102nd AOCS Annual Meeting & Expo, Abstracts.
Chicago author-date (all authors)
Liaotrakoon, Wijitra, Nathalie De Clercq, Vera Van Hoed, and Koen Dewettinck. 2011. “Characterisation of the Physicochemical Properties of Two Species of Dragon Fruit Seed Oil (Hylocereus Undatus and Hylocereus Polyrhizus).” In 102nd AOCS Annual Meeting & Expo, Abstracts.
Vancouver
1.
Liaotrakoon W, De Clercq N, Van Hoed V, Dewettinck K. Characterisation of the physicochemical properties of two species of dragon fruit seed oil (Hylocereus undatus and Hylocereus polyrhizus). 102nd AOCS annual meeting & expo, Abstracts. 2011.
IEEE
[1]
W. Liaotrakoon, N. De Clercq, V. Van Hoed, and K. Dewettinck, “Characterisation of the physicochemical properties of two species of dragon fruit seed oil (Hylocereus undatus and Hylocereus polyrhizus),” in 102nd AOCS annual meeting & expo, Abstracts, Cincinnati, OH, USA, 2011.
@inproceedings{1235296,
  abstract     = {{Oil was extracted from the seed of white-flesh (Hylocereus undatus; WFSO) and red-flesh (Hylocereus polyrhizus; RFSO) dragon fruits using a cold extraction process with petroleum ether. The delta-, gamma-, and alpha-tocopherol content, fatty acid and triacylglycerol composition, thermal and rheological properties of the extracted dragon fruit seed oils were analysed. The results showed that the dragon fruit seeds contained a high amount of oil up to 34.13%. The principal tocopherol in WFSO and RFSO was alpha-tocopherol. The total tocopherols content of RFSO was 1.6 times higher than that of WFSO. The three main fatty acids in these oils were palmitic acid (C16:0), oleic acid (C18:1) and linoleic acid (C18:2). The seed oil is interesting from a nutritional point of view: the essential fatty acid content of WFSO and RFSO counts up to 55.64% and 45.37% respectively. The main triacylglycerol in WFSO and RFSO was LLL, LLO, PLL, LOO and PLO. The thermal curves for WFSO and RFSO consisted of two main endothermic peaks with a broader temperature range around these peaks of -49.58 and 3.41 °C. The apparent viscosity of WFSO and RFSO was similar (14.24-14.32 mPa.s). Thus the dragon fruit seed oils can be considered as a new source of tocopherols and essential fatty acids.}},
  author       = {{Liaotrakoon, Wijitra and De Clercq, Nathalie and Van Hoed, Vera and Dewettinck, Koen}},
  booktitle    = {{102nd AOCS annual meeting & expo, Abstracts}},
  keywords     = {{Dragon fruit,Seed oil,Essential fatty acid,Tocopherol}},
  language     = {{eng}},
  location     = {{Cincinnati, OH, USA}},
  title        = {{Characterisation of the physicochemical properties of two species of dragon fruit seed oil (Hylocereus undatus and Hylocereus polyrhizus)}},
  year         = {{2011}},
}