Sacha inchi (Plukenetia volubilis): A seed source of polyunsaturated fatty acids, tocopherols, phytosterols, phenolic compounds and antioxidant capacity

Rosana Chirinos, Gledy Zuloeta, ROMINA PAOLA PEDRESCHI PLASENCIA, Eric Mignolet, Yvan Larondelle, David Campos

Research output: Contribution to journalArticlepeer-review

81 Scopus citations

Abstract

Fatty acids (FA), phytosterols, tocopherols, phenolic compounds, total carotenoids and hydrophilic and lipophilic ORAC antioxidant capacities were evaluated in 16 cultivars of Sacha inchi (SI) seeds with the aim to valorise them and offer more information on the functional properties of SI seeds. A high α linolenic (α-Ln) fatty acid content was found in all cultivars (ω3, 12.8-16.0 g/100 g seed), followed by linoleic (L) fatty acid (ω6, 12.4-14.1 g/100 g seed). The ratio ω6/ω3 was within the 0.83-1.09 range. γ- and δ-tocopherols were the most important tocopherols, whereas the most representative phytosterols were β-sitosterol and stigmasterol. Contents of total phenolics, total carotenoids and hydrophilic and lipophilic antioxidant capacities ranged from 64.6 to 80 mg of gallic acid equivalent/100 g seed; from 0.07 to 0.09 mg of β-carotene equivalent/100 g of seed; from 4.3 to 7.3 and, from 1.0 to 2.8 μmol of Trolox equivalent/g of seed, respectively, among the evaluated SI cultivars. Results showed significant differences (p < 0.05) among the evaluated SI cultivars in the contents of ω3, ω6, antioxidant capacities and other evaluated phytochemicals. SI seeds should be considered as an important dietary source of health promoting phytochemicals.

Original languageEnglish
Pages (from-to)1732-1739
Number of pages8
JournalFood Chemistry
Volume141
Issue number3
DOIs
StatePublished - 1 Jan 2013

Keywords

  • Antioxidant capacity
  • Carotenoids
  • Fatty acids
  • Phenolic compounds
  • Phytosterols
  • Plukenetia volubilis
  • Tocopherols

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