Lipid profile, volatile compounds and oxidative stability during the storage of Moroccan Opuntia ficus-indica seed oil
| Autor: | S. El harkaoui, S. Gharby, B. Kartah, H. El Monfalouti, M. E. El-sayed, M. Abdin, M.A. Salama, Z. Charrouf, B. Matthäus |
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| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Grasas y Aceites, Vol 74, Iss 1 (2023) |
| Druh dokumentu: | article |
| ISSN: | 0017-3495 1988-4214 |
| DOI: | 10.3989/gya.1129212 |
| Popis: | The fatty acids, sterol, tocopherol and volatile compositions of Moroccan cold-pressed cactus (Opuntia ficus-indica) seed oil were studied. The most abundant fatty acid, tocopherol and sterol were linoleic acid (60.6%), γ-tocopherol (533 mg/kg) and β-sitosterol (6075 mg/kg), respectively. In this study, 23 volatile compounds were identified with perceivable odor attributes for 14 compounds. The oxidative quality of cactus seed oil was monitored over 4 weeks at 50 °C. Increases in PV, K232 and FFA were detected during the first two weeks as well as a decrease in the induction time; whereas no change was reported for the K270 values. The amount of total phenolic content increased until it reached 0.3 mg/kg and then decreased by the end of the storage period; while tocopherols started to decrease after the first week. The fat-free residue extracts showed a very strong effect to reduce the oxidation of linoleic acid. Consequently, the extracts were significantly more effective to bleach β-carotene in the β-carotene-linoleic acid assay in comparison with the control. |
| Databáze: | Directory of Open Access Journals |
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