Carotenoid, Tocopherol, and Volatile Aroma Compounds in Eight Sacha Inchi Seed ( Plukenetia volubilis L.) Oil Accessions

Sacha inchi seed oil is a food matrix rich in bioactive constituents, mainly polyunsaturated fatty acids. In this study, the characteristics of color, carotenoid content, tocopherols, and volatile aroma compounds in eight sacha inchi seed ( Plukenetia volubilis L.) oil accessions were evaluated. Results showed that the oil obtained from the accessions presented a lightness and chroma of 91 to 98 units and 6 to 10 units respectively, while the hue angle ranged between 93 to 97 units. The total carotenoid content in the different accessions ranged from 0.6 to 1.5 mg/kg, while gamma- and delta-tocopherol ranged from 861.6 to 1142 mg/kg and 587 to 717.1 mg/kg. In addition, the total content of tocopherols varied between 1450 and 1856 mg/kg and the delta/gamma ratio ranged between 0.58 and 0.70. The oils from the accessions PER000408 (861 mu g/kg) and PER000411 (896 mu g/kg) were those with the higher volatile concentration, especially 1-hepten-3-ol, 2-nonanol, ( E )-3-hexen- 1-ol, ( E )-2-hexenal, and 1-hexanol. In this study, the variability of the oil obtained from 8 accessions were observed, from which promising accessions can be selected for continuous investigations of the new sacha inchi seed genotypes.